90890 Novibra eng
Transcription
90890 Novibra eng
Contents Novibra® – Provides a healthier environment Novibra® – A safe choice Novibra® – vibration technology • • • • • • • • • • • • • • • • Vibration causes structure borne noise Novibra reduce the total cost The properties of rubber makes it particulary suitable as a spring mount Rubber as an engineering material The most important properties for rubber Spring coefficients Stresses Stiffness of a rubber spring Calculation of antivibration mounting Some vibration definitions Calculation of deflections Calculation of isolation degree Shock isolation Unit conversion General set up Assistance when choosing antivibration mounting Novibra® - product description RA Universal mounting for industrial, marine and other mobile installations, i.e. generating sets, combustion engines, compressors and pumps. RAEM As RA, but specifically recommended for installations where a high degree of isolation is required. RAB Effective damping on small 1, 2 and 3 cylinder engines or other installations with excessive movements. M An extremely soft mounting providing a high degree of isolation and shock protection on fans, electric motors, computers etc. BA Suitable for the isolation of low speed machines - light fans, instruments and gauging equipment. HK/MK Designed to permit high compression under vertical load but in the same time stable in the horizontal direction. Suitable for off road installations for instance to engine installations and cabin suspension EH Vibration isolation on engines, operator cabins and other ancillary, mainly for mobile applications. 4 UH Suitable for the suspension of cabins on industrial and agricultural vehicles, like tractors, combine-harvestor, street sweepers, fork-lift trucks, etc. SAW Dual stiffness mounting for crushers, mills, grinders and similar large, heavy equipment. GK A heavy duty mounting for large machines, such as refiners, defibrators, industrial fans, mixers, roll-mills and all types of inertia blocks. Also for supporting floating floors and control rooms. Novibra plate For vibration-isolation of limited requirements on e.g. printing machines, pillar drills, transformers, lathes. TF/TFE General workshop mounting with height adjustment, also suitable for punches, presses, etc. U As TF for installation of presses, punches, weaving machines, printing machines and other heavy high-speed machines. SE A simple mounting for office apparatus, sewing machines, electric motors, etc. VT/TK For the protection of instruments and apparatus on walls and ceilings. Particularly suitable for installation on board ships. ANB A shock absorbing mounting for the isolation of shocks on mobile installations e.g. off-road and rail vehicles, cranes and overhead cranes. VP For solving bearing problems in vibrating and oscillating constructions. Bobbins A supplementary range of cylindrical mountings. HA Height adjuster for precise coupling alignment of engine installations and boat building tolerances (for use with RA, RAEM, RAB and M). Novibra® – Questionnaire 5 Novibra type RA FEATURES RA uses the rubber profile in shear and compression, obtaining good vertical flexibility with the advantage of horizontal stability. For normal speeds of approx. 1500 rpm, the RA type provides a degree of isolation of 75-85%. For even better isolation, the alternative RAEM or M can be chosen. Its unique construction and the latest production methods make Novibra type RA a high performance mounting having a number of advantages: APPLICATION For the effective isolation of vibration and noise on different machines with rotating movements, like: • • • • compressors combustion engines generators converters • pumps • industrial and marine gen-sets • fans Also suitable for use with presses, punches and other workshop machines. • Rubber features are utilised effectively combining compression and shear. • Tight tolerances on dynamic stiffness rate for accurate vibration calculations. • Wide load rating options, 40-2100 kg. • Corrosion protected to cope with arduous environments on land or marine applications (Fe/Zn 8C as per ISO 2081). • Stronger base metal withstands high shock loads without deformation. • Fitted as standard with a shock-proof device with resilient stop, making RA ideal for use on mobile or marine applications. The RA-mounts can manage occasional shock loads up to 5 g refered to the weight in hardness B. The mount can withstand shock loads up to 2 g without plastic deformation. • Clear and durable product marking so that mountings can be identified even after several years in operation. • Domed shape cover to protect against oil contamination. RA 100, RA 200, RA 500, RA 800 RA 1200, RA 1800 RA 350 Type RA 100/M10 RA 100/M12 RA 200/M10 RA 200/M12 RA 350/M12 RA 350/M16 RA 500 RA 800 RA 1200 RA 1800 16 Art.No. Hardness A (40° IRH) 1861700 2256120 1861740 2255720 2256370 1861760 1861800 1861820 2255360 2255380 Art.No. Hardness B (60° IRH) 1861710 2256130 1861750 1860350 2256380 1861770 1861810 1861830 2255370 2255390 D 79 79 94 94 101 101 123 144 161 181 Dimensions in mm A H K 110 30 130 110 30 130 124 35 150 124 35 150 140–148 38 175 140–148 38 175 158 42 192 182 48 216 140 58 170 160 66.5 190 d 9 9 10 10 14 14 14 14 14 14 G M10 M12 M10 M12 M12 M16 M16 M16 M20 M20 Weight M-Max(kg) (kg) A (40° IRH) B (60° IRH) 0.330 105 240 0.330 105 240 0.470 180 280 0.470 180 280 0.737 250 450 0.737 250 450 1.020 450 700 1.589 750 1300 2.188 900 1600 2.325 1300 2100 Novibra type RA Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) 2 500 Diagram 1 2 000 B 0 A RA 80 0A 400 RA 500 RA 500 B A RA 200 RA 350 A B A 100 0 B 00 A 18 RA RA RA 10 0 A 100 90 80 70 60 100 0 B RA B 10 150 200 350 RA RA B RA RA 300 200 B 00 120 500 00 18 RA 0B 800 B 80 RA 0A RA 120 RA 180 RA RA 1 000 900 800 700 600 0B 35 RA 0 B RA RA 50 2 RA 0 35 00 B B 0 20 A 0 A RA RA 12 50 00 0 A R A A 80 0 A RA 180 12 RA 1 500 Diagram 2 A 50 40 30 7 8 9 10 11 12 13 16 18 20 1 Natural frequency (Hz) 14 Interfering frequency (Hz) 7 8 9 Reso nanc 10 e 10 15 Diagram 3 Avoid this r egion 25 0 50/6 40 50 60 70 80 90 100 3 4 5 6 7 8 10 Static deflection (mm) To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 20 30 2 70/10 1 2 L 80/14 85/16 90/20 I 3 95/26 98/34 Degree of isolation (%)/Reduction (dB) 17 Novibra type RAEM where EM stands for ”extra soft”. Suitable for both light and heavy machines. For normal speeds of approx. 1500 rpm the RAEM type provides a degree of isolation of 85-95%, and gives a good isolation even with low frequency machines. Its unique construction and the latest production methods make Novibra type RAEM a high performance mounting having a number of advantages: APPLICATION For the effective isolation of vibration and noise on different machines with rotating movements, like: • • • • • • compressors AC units industrial fans generators combustion engines emergency power sets • large milling machinery • industrial and marine gen sets • refiners • defibrators FEATURES RAEM is a universal mounting for applications demanding maximum isolation. It is a further development of RA, • Rubber features are utilised effectively combining compression and shear. • Tight tolerances on dynamic stiffness rate for accurate vibration calculations. • Wide load rating options, 10-3400 kg. • Corrosion protected to cope with arduous environments on land or marine applications (Fe/Zn 8C as per ISO 2081). • Stronger base metal withstands high shock loads without deformation. • Fitted as standard with a shock-proof device with resilient stop, making RAEM ideal for use on mobile or marine applications. The RAEM-mounts can manage occasional shock loads up to 5 g refered to the weight in hardness B. The mount can withstand shock loads up to 2 g without plastic deformation. • Clear and durable product marking so that mountings can be identified even after several years in operation. • Domed shape cover to protect against oil contamination. RAEM 60 RAEM 1500, RAEM 2500 RAEM 40, RAEM 125, RAEM 800 Art.No. Art.No. Hardness A Hardness B Type (40° IRH) (60° IRH) D RAEM 40 1861860 1861870 64 RAEM 60 2256760 2256770 63 RAEM 125 M10 1861720 1861730 84 RAEM 125 M12 2256140 2256150 84 RAEM 350 M12 2256440 2256450 110 RAEM 350 M16 1861780 1861790 110 RAEM 800 1861840 1861850 155 RAEM 1500 2255400 2255410 182 RAEM 2500 2255420 2255430 224 RAEM 1500 Duplex(*) 101105 248 (*) No stop device 18 Dimensions in mm A H K d 88 35.5 110 9 100 35.5 120 11 110 35.5 135 11 110 35.5 135 11 140–148 42 175 14 140–148 42 175 14 182 54 216 14 146 85 180 14 180 105.5 220 17.5 146 115 180 14.5 G M10 M12 M10 M12 M12 M16 M16 M20 M24 M20 RAEM 350 Weight M-Max(kg) (kg) A (40° IRH) B (60° IRH) 0.255 30 60 0.295 60 120 0.372 80 180 0.372 80 180 0.800 200 400 0.800 200 400 1.784 450 800 3.000 900 1700 4.620 1700 3400 900 Novibra type RAEM Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) 3 500 3 000 2 500 EM 25 00 2 000 RA EM A RA RA EM 80 0B 35 0B EM 0A 35 0A 100 80 70 60 50 40 RA EM 12 5B RA RA RA EM 60 12 5 B RA EM A EM 40 60 B A RA EM 40 A EM EM RA EM 12 5A RA 30 25 20 RAEM 350 A 60 EM B 40 B EM RA RA 150 80 A 300 250 200 EM A xA 40 ple R 80 R 0 B AE RAE AEM M M 25 25 15 00 RA 00 00 B EM A B RA 80 E RA 0 A RAE M M 350 EM 15 B 15 00 00 A Du ple xA 15 00 Du EM 00 RA 15 B 60 EM RA RA 00 5B EM 15 12 RA B EM 00 EM 1 000 800 700 600 500 400 EM 25 RA EM B RA RA 1 500 Diagram 2 Diagram 1 RA RA 15 10 3 4 5 6 7 8 9 10 14 12 16 18 20 1 Natural frequency (Hz) Interfering frequency (Hz) 3 Diagram 3 To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 4 5 6 7 8 9 10 Res ona nce Avo id t 15 his 3 4 5 6 7 8 10 15 20 30 Static deflection (mm) 2 reg ion 20 25 30 50/6 70/10 80/14 85/16 40 50 60 70 80 90 100 1 0 90/20 2 L I 3 95/26 98/34 Degree of isolation (%)/Reduction (dB) 19 Novibra type RAB FEATURES Similar in design to the RA/RAEM range, type RAB uses rubber in shear and compression for optimum stiffness characteristics and horizontal stability. Especially effective on small 1, 2 and 3 cylinder diesel engines where the special compound employed provides effective isolation of vibration whilst eliminating much of the excessive movement normally associated with 1–3 cylinder engines. Its unique construction and the latest production methods make Novibra type RAB a high performance mounting having a number of advantages: APPLICATION For the effective isolation of vibration and noise on different machines with rotating movements, like: • diesel engines • combustion engines • emergency power packs Type RAB- 0 RAB -2 RAB -3 20 Art.No. (55˚ IRH) 2256600 2256610 2256620 • pumps • industrial gensets • marine gensets D 63 63 63 Dimensions mm A H K 76 35 93,5 76 35 93,5 76 35 93,5 • Rubber features are utilised effectively combining compression and shear. • Tight tolerances on dynamic stiffness rate for accurate vibration calculations. • Load rating options, 10-130 kg. • Corrosion protected to cope with arduous environments on land or marine applications (Fe/Zn 8C as per ISO 2081). • Stronger base metal withstands high shock loads without deformation. • Fitted as standard with a shock-proof device with resilient stop, ideal for mobile or marine use. The RABmounts can manage occasional shock loads up to 5 g refered to the weight. The mount can withstand shock loads up to 2 g without plastic deformation. • Clear and durable product marking so that mountings can be identified even after several years in operation. • Domed shape cover to protect against oil contamination. d 8,5 8,5 8,5 G M12 M12 M12 Weight Kg 0,22 0,22 0,22 M-Max (kg) 130 105 70 Novibra type RAB Load per mounting (kg) 140 RAB-0 120 RAB-2 100 80 RAB-3 60 40 20 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Static deflection (mm) Fully approved by Nato and Europes leading manufacturers of 1- 2- and 3-cylinder versions of compact diesel engines. Example of RAB-installation on a 3-cylinder diesel engine power pack. 21 Novibra type M FEATURES Novibra type M is specifically designed to give high resilience at low loads. Although the mount design allows high deflection, they are compact in weight and easy to install. Its unique construction and the latest production methods make Novibra type M a high performance antivibration mounting having a number of advantages: APPLICATION Type M is ideal for applications involving isolation of low frequency vibrations in all planes. Also suitable for shock attenuation due to the designed ability to give large deflections whilst providing passive vibration on electronic instruments, measuring equipment, test cells. Specific fields of application are: • • • • • • • • compressors refrigerators AC-units ventilators fans powder handling machinery vibratory screens packaging applications • • • • • • • Tight tolerances on dynamic stiffness rate for accurate vibration calculations. • Wide load rating options, 3,5–2500 kg. • Corrosion protected to cope with arduous environments on land or marine applications (Fe/Zn 8C3 as per ISO 2081). • Clear and durable product marking so that mountings can be identified even after several years in operation. When using M mount together with the height adjuster HA it is necessary to use a washer. The diameter of the washer must be 20% larger than the diameter of the upper plate (D). electric motors weighing scales test cell equipment noise control units pumps food processing equipment M 7, M 25, M 50, M 100, M 200 Type M 7 M 25 M 50 M 100 M 200 M 400 M 600 M 1500 22 Art.No. Hardness A (40° IRH) 2255110 1861220 1861240 1861620 1861660 1861680 1533710 1533730 Art.No. Hardness B (60° IRH) 2255120 1861230 1861250 1861610 1861670 1861690 1533720 1533740 D E 18 43 33 56 45 76 53 96 58 101 78 100 186 Dimensions in mm A K H h 50 64 20 7 66 85 25 11 92 114 35 14 110 136 40 15 124 151 45 13 120 150 63 18 160 200 85 25 250 310 160 43 d 7 8 10 11,5 11,5 14,5 14,5 18 G M 6 M 8 M 10 M 10 M 10 M 12 M 16 M 24 M 400, M 600, M 1500 Weight M-Max(kg) Kg A (40° IRH) B (60° IRH) 0,02 3,5 9 0,07 20 50 0,16 40 80 0,26 70 150 0,42 130 220 1,06 280 500 2,35 380 750 9,43 1400 2500 Novibra type M Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) M25 – M1500 3000 2500 2000 Diagram 1 Diagram 2 M 15 M 00 15 A 800 700 600 500 00 M 15 1000 M M 40 15 0B M 00 60 0B B B A 00 1500 M 50 B 7B M 10 M 25 B M B 4 5 6 7 8 12 14 16 18 20 2 9 10 7A M A 25 25 A M 3 Interfering frequency (Hz) M M 50 7A A M A 50 2 M 0A B 50 M M M 1 10 7B 25 M 1,5 0B 15 0A 2 10 20 10 3 0A 30 M 4 20 40 M 10 9 8 7 6 5 M M7A, M7B M M 10 20 0B 0A 0B 20 150 Load per mounting (kg) 100 80 70 60 50 40 0A M 20 0B 0A M 40 M 200 0A 60 M 300 0B 40 M M 60 0A 0B 60 M 400 3 Natural frequency (Hz) 4 5 6 7 8 9101214161820 25 30 40 50 M7 A, M7 B 1 2 2,5 3 4 5 Static deflection (mm) 2 Diagram 3 3 4 5 6 7 8 10 15 Re son anc e Avo id t his reg ion To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 20 25 30 40 50 60 70 80 100 0 50/6 70/10 80/14 85/16 90/20 95/26 1 2 L I 3 98/34 Degree of isolation (%) / Reduction (dB) 23 Novibra type BA FEATURES Novibra type BA utilises bonded rubber in shear to permit relatively high deflections to occur, thus providing excellent isolation of low frequencies. (Type BA 20/2 is a halfsection suitable for very light loads). On revolving equipment applications the soft axis should be at right angles to the shaft, whilst in mobile applications the stiff axis should be aligned in the direction of travel. For transit case applications the mountings need to be arranged so that the horizontal stiffness is the same in all directions. APPLICATION Novibra type BA is equally suitable for isolating vibrations from low speed machines and equipment whilst also protecting sensitive and lightweight units from external shocks and vibrations. Rubber in shear (soft) Type BA is very easy to install and ideal for applications like: • light fans and compressors • portable gensets and pumps • computers and electronic units • transit cases • measuring and test instruments • gauging equipment BA 20/2 Type BA 20/2 BA 20 BA 50 BA 100 24 Rubber in shear (soft) Rubber in compression BA 20–BA 100 Art.No. Hardness A (40° IRH) 67868 2255230 2255250 2255270 Art.No. Hardness B (60° IRH) 67876 2255240 2255260 2255280 B 20 20 50 100 L 90 90 90 90 Dimensions in mm H A d 58 62 8 50 10 50 12 50 15 t 4 4 4 4 Weight (kg) 0.09 0.16 0.42 0.83 M-Max(kg) A (40° IRH) B (60° IRH) 12 27 20 35 60 110 130 250 Novibra type BA Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) 300 250 Diagram 2 Diagram 1 150 BA 10 0B BA 0 40 10 BA 10 0A 50 B B BA A 50 50 BA 30 10 0 A BA BA 90 80 70 60 50 B 100 A B /2 B BA A 20 5 6 7 8 9 10 14 16 18 20 1 Natural frequency (Hz) 12 Interfering frequency (Hz) 5 6 Res 7 ona nce 8 9 10 Diagram 3 Avo id th 2 is re gion 0 30 40 50 3 4 5 6 7 8 9 10 Static deflection (mm) To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 20 60 70 80 90 100 A BA 4 3 A A /2 /2 20 20 BA BA BA 20 10 9 8 7 6 5 20 20 /2 BA B 20 BA 15 20 B BA 50 BA 20 1 50/6 L 70/10 80/14 85/16 90/20 I 2 3 95/26 98/34 Degree of isolation (%)/Reduction (dB) 25 Novibra type HK/MK APPLICATION Novibra type HK/MK has a special resilient nature and impact resistance which make it suitable for isolating combustion engines in mobile applications as in ships, heavy construction vehicles and tractors. HK is also suitable for isolation of cabs on the same type of machines. The MK is supplied with shock absorbing washers, whilst washers for the HK 150 and HK 600 should be ordered separately. FEATURES Novibra Antivibration mounting type HK/MK is designed to permit high compression under vertical load but is at the same time stable in the horizontal direction. The conical shape makes the rubber work in both shear and compression stresses in a favourable way. M HK MK Type Art.No. A1 B1 Dimensions in mm A2 B2 K F D d R t H h HK 150 A HK 150 B HK 600 A HK 600 B 2256920 2256930 2256940 2256950 65 65 92 92 80 80 112 112 69.4 69.4 98 98 107 107 140 140 74 74 103 103 16H11 16H11 20H11 20H11 5.5 5.5 5.5 5.5 4 4 4 4 64 64 85 85 19 19 20 20 Type Washer upper Washer lower Washer upper Washer lower Art.No. 2230390 2230400 2230560 2230570 HK 150 HK 150 HK 600 HK 600 82.7 82.7 98 98 92 92 121 121 OD (mm) 75 55 55 110 ID (mm) 16H11 16H11 20H11 20H11 Weight M-Max (kg) (kg) 0.65 0.65 1.0 1.0 225 545 940 1700 Thickness (mm) 4 5 5 5 Type Art.No. A K Dimensions in mm F H h D d d1 t Weight M-Max (kg) (kg) MK 80 A MK 80 B MK 80 C 2256030 2256040 2256050 80 80 80 107 107 107 70 70 70 62 62 62 12 12 12 11 11 11 2.5 2.5 2.5 0.37 0.37 0.37 26 51 51 51 16.5 16.5 16.5 100 175 285 Novibra type HK/MK Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) 2 000 Diagram 1 HK Diagram 2 60 0B HK HK 600 60 0B 1 000 60 0A 60 15 HK 0B 15 300 0B HK 400 0A 500 80 B HK 0A A 80 K A M 80 M MK K 80 B 100 15 C 15 MK HK 80 0A MK 200 180 160 140 120 HK 250 40 6 7 8 9 10 11 12 13 Reso 14 15 20 Diagram 3 To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. nanc e Avoi d thi s reg ion 20 25 0 30 1 50/6 2 L 40 70/10 80/14 85/16 50 90/20 100 10 Static deflection (mm) 10 15 5 1 Natural frequency (Hz) Interfering frequency (Hz) 6 I 3 95/26 98/34 Degree of isolation (%)/Reduction (dB) 27 Novibra type EH FEATURES Type EH is designed mainly for mobile applications where high dynamic and shock forces are encountered. Dynamic vertical movements in both the directions are restricted and excellent stability is provided horizontally. Racking and twisting stress of brackets are accommodated while at the same time obtaining vibration isolation and shock absorption. The function of EH includes features as: • Dynamic efficiency in all directions • Attenuation of structural borne noise • Accommodation of misalignment and distortion • Simple design – easy to install • Fail-safe installation • Wide load range, 80 to 450 kg APPLICATION Type EH mountings are designed to achieve effective vibration isolation on engines, operator cabins and other ancillary units. Typical applications can be found in the following areas: • Off-road equipment • Military vehicles • Transport machinery Max tightening torque • Construction equipment • Agricultural vehicles • Industrial mobile machinery • EH 4850: • EH 6463: • EH 9075: 40 Nm 80 Nm 200 Nm Exemple of installation Exemple of installation Machine in operation Machine in operation Table of measures for installation Dimensions in mm C E 31.0 15.0 39.0 22.0 56.5 28.0 Type EH 4850 EH 6463 EH 9075 R 1.5 2.3 3.0 Type Art.No. Art.No. Hardness A Hardness B d D Dimensions in mm D1 H H1 H2 H3 H4 Max load (kg) A B EH 4850 EH 6463 EH 9075 1860570 1860550 1860530 50 64 89 32 40 58 10 14 19 20 25 29 20 23 25 60 100 260 28 1860560 1860540 1860520 13.0 17.0 23.0 50 62 73 20 23 25 120 190 420 Novibra type EH Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) 500 450 400 Diagram 1 90 75 B EH 300 B 75 350 Diagram 2 EH EH 90 64 63 A B & 75 EH 200 180 160 90 75 A EH 90 250 64 63 B 140 EH 120 EH 63 50 B A A 50 48 50 50 48 EH A EH 60 EH 64 70 48 5 A 0B 48 64 63 EH EH 100 90 80 40 30 20 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 0.5 Natural frequency (Hz) Interfering frequency (Hz) 10 Reso e Avoi d thi 20 1.5 2 2.5 3 Static deflection (mm) To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. Diagram 3 nanc 15 0.8 1 s reg ion 25 30 0 40 50 70/10 60 80/14 85/16 90/20 70 80 90 100 1 50/6 2 L I 3 95/26 Degree of isolation (%)/Reduction (dB) 29 Novibra type UH FEATURES Novibra UH is an anti-vibration mounting designed to accommodate axial static and shock loads in both directions. The dynamic natural frequency is constant irrespective of the static load. When fitted with overload/rebound washers, a high strenght fail-safe installation is provided. Moreover, it is possible to alter the characteristics of the mounting by providing an extra dome-shaped washer on the top rubber-section, which will provide impact resistance against deflection beyond the permissable limit. Installation of the mounting can be done in an easy way and reduces necessary build tolerances. APPLICATION Novibra mounting type UH is particularly suitable for the suspension of both mobile and static cabins as well as platforms on agricultural vehicles. Whilst vibration and noise is effectively isolated the UHmounting also protects tanks and ancillary equipment against metal fatigue caused by chassis distortion. Specific applications can be found on : • tractors • combine harvester • wheel-mounted loaders • street sweepers • compactors • lifting cranes • construction vehicles • forestry vehicles • off-the-road equipment • fork-lift trucks • excavators UH is available in 2 standard versions allowing different maximum loads i.e. type UH 50 for up to a load of 250 kg and type UH 70 up to 400 kg per mounting. Note: Maximum tightening torque of bolts: • UH 50 80 Nm • UH 70 120 Nm Tipo Art.No. K A Dimensioni in mm H C d d1 Peso (kg) M-Max (kg) UH 50 UH 70 1534120 1660850 100.5 100.5 80.4 80.4 37 37 15 17 0.41 0.41 250 400 1660420 d 17 D 75 t 6 UH Washer 30 91 91 10.5 10.5 Novibra type UH Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) 4000 Diagram 1 3000 2500 Diagram 2 UH 70 UH 70 2000 1500 UH 50 1000 900 800 700 600 UH 50 500 400 300 200 150 100 90 80 70 60 50 7 8 9 Interfering frequency (Hz) 7 Reso 10 10 11 12 2 14 15 16 17 1 Natural frequency (Hz) 13 Diagram 3 nanc e Avoi d thi s reg ion 20 0 30 3 4 5 6 7 8 10 12 Static deflection (mm) To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 50/6 70/10 40 50 80/14 85/16 60 90/20 70 80 90 100 L I 95/26 98/34 Degree of isolation (%)/Reduction (dB) 31 Novibra type SAW FEATURES Novibra type SAW mountings consists of a cylindrical shaped rubber section with integrally bonded interleaf metal plates which is bonded to two square heavy duty outer metal fixing plates. It has been designed for large compressive thrust forces with minimum deformation, whilst providing low shear stiffness rates. The combination of a stable low installation height, high compressive strength and low shear stiffness makes Novibra type SAW a versatile high performance antivibration mounting. Installation is easy due to only 4 clearance holes in each fixing plate. APPLICATION Novibra elements type SAW are heavy duty mountings for high vertical static and shock loads in compression, whilst at the same time providing high isolation values in the horizontal shear direction. By connecting 2 SAW-elements in series i.e. one on top of another, an increased isolation efficiency is achieved in both shear and compression planes to isolate very low frequencies. Where large deflections are required in the vertical plane Novibra type SAW mountings can be mounted at a calculated angle configuration to provide the optimum spring rate between shear and compression stiffness. Typical fields of application are: • crushers • edge runners • mills • grinders • hoppers and feeders • vibratory rollers • screens • other very heavy machines and equipment Shear loads only. Type SAW 125 SAW 150 SAW 200 SAW 300 32 Art.No. Hardness A (40° IRH) 2255130 2255150 814467 814483 Art.No. Hardness B (60° IRH) 2255140 2255160 814475 814491 A 118 136 184 270 K 148 166 220 310 Dimensions in mm H d 52 13.5 63 13.5 82 17 120 22 t 5 6 8 10 See separate diagram for shear load. Weight (kg) 2.6 4.1 9.2 27.0 M-Max(kg) A (40° IRH) B (60° IRH) 2250 4500 3750 7500 6000 12000 15000 30000 Novibra type SAW Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Horizontal vibration Vertical load Vertical vibration Vertical load Load per mounting (kg) 35000 Diagram 2 Diagram 1 30000 W SA W SA 0 30 0 30 4 5 Re so na nc e Av oid thi sr eg ion 2 30 W SA 20 0A 20 W W 3 4 5 6 7 8 9 10 Static deflection (mm) To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting (both vertical and lateral vibration plane). Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 15 1 20 2 L 0 50/6 70/10 80/14 85/16 90/20 30 40 50 60 80 100 0B 30 7 8 9 10 12 14 16 18 20 1 Natural frequency (Hz) 6 SA 5A SA 5A W 12 10 12 W 8 SA SA 4 5 6 W 5B 0A 3 12 12 15 3 Diagram 3 2 5B W 15 SA W 5B 5A 2 Interfering frequency (Hz) 1 SA SA W 0B 12 SA 0A 20 W 12 1.5 15 15 W SA 0 A SAW 15 1000 900 800 0.7 0.8 0.9 1 0B W SA 0B W 1500 W 0B SA 15 SA 2000 SA 20 0B W 0A 20 3000 W W 20 SA W 4000 SA 5000 SA SA 0A W 0A 30 SA 30 W W 0B SA SA 10000 9000 8000 7000 6000 0A B B 15000 0A 20000 98/34 Degree of isolation (%)/Reduction (dB) I 3 95/26 33 Novibra type SAW = Shear loads Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. F max (kg) Hardness A SAW 125 SAW 150 SAW 200 SAW 300 240 330 600 1575 Hardness B 570 850 1200 3150 This page refers to shear load characteristics only! Load per mounting (kg) 4000 Diagram 2 Diagram 1 3000 2500 SA W F 30 0B 2000 1500 0A 20 15 W 20 0A 00 12 5B B 300 W1 0A A 25 12 2 2.5 3 Interfering frequency (Hz) 1 3.5 4 5 7 8 9 10 1 Natural frequency (Hz) 6 Diagram 3 2 3 4 5 6 8 Reso nanc e Avoi d thi s reg ion 10 30 40 50 60 95/26 98/34 80 100 Degree of isolation (%)/Reduction (dB) A W1 SA 3 4 5 678 10 15 20 30 40 50 Static deflection (mm) To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting (both vertical and lateral vibration plane). Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 0 50/6 70/10 80/14 85/16 90/20 20 34 2 50 25 W1 F SA 100 90 80 70 60 50 B SA W2 00 5A 150 W1 W SA F 15 A SA SA W 50 SA 200 SA SA W3 W B 0B SA W2 00 B 0B W 400 SA W SA 500 00 F SA W3 30 SA W 1000 900 800 700 600 A SA 1 L I 3 2 Novibra type GK FEATURES Type GK is a heavy duty mounting with excellent flexible characteristics in both vertical and lateral planes. Deflection up to 30 mm can be obtained which makes Novibra type GK suitable for installations with low disturbing frequencies. Installation is simple with no need for traditional means of attachment to machinery or support structure. APPLICATION Novibra mounting type GK is specifically meant for isolation of heavy machinery with low interfering frequencies. It is widely used under concrete foundations supporting heavy machinery. The long narrow section makes type GK also suitable for composite installations on common structural framework. Typical fields of application are: • rolling mills • mixers • gear wheels • industrial fans • paper mills • converters • sound encloseres • floating structures SHEAR LOAD Static spring rate Type GK 0 A GK 0 B GK 1 A GK 1 B Art.No. 1534080 1861630 67959 67967 L 195 195 400 400 Dimensions in mm B 175 175 175 175 H 150 150 150 150 Weight (kg) 5.2 5.7 10.7 11.8 M-Max(kg) 1800 3800 4000 8000 35 Novibra type GK Note: The natural frequencies, degrees of isolation and dB-reductions are based on the measured dynamic characteristics of the mountings. Load per mounting (kg) Horizontal vibration Vertical load M 10000 9000 Vertical vibration Vertical load M Diagram 1 Diagram 2 8000 7000 GK 1B 1B GK 6000 5000 GK 1 B 4000 GK 0B GK 1A 1A 0B GK 1500 GK A 0A 0A GK 1250 B GK 1 A 2000 GK 0 2500 GK 3000 GK 0 1000 900 800 700 600 500 1 Interfering frequency (Hz) 1 2 3 4 6 7 8 9 10 5 6 7 8 9 10 12 141618 20 25 30 40 Natural frequency (Hz) Static deflection (mm) 5 Diagram 3 2 Res ona nce 3 4 5 6 7 8 10 Avo id th is re gion 0 50/6 70/10 80/14 85/16 90/20 15 20 30 40 50 60 70 80 100 95/26 98/34 Degree of isolation (%)/Reduction (dB) 36 To select correct mounting, following data are needed: 1) Load per mounting (kg) 2) Interfering frequency (Hz) (Hz = rpm / 60 ) Select correct load line in diagram 1 and correct interference line in diagram 3. The load line intersects with required type of mounting. Connect this intersection point vertically down to the interference line in diagram 3. Here, on the sloping curve, the isolation degree is indicated. For static deflection, see diagram 2. 1 L I 3 2 Novibra Anti-vibration Plate Suitable applications are: • pillar drills • transformers • large pumps • printing presses • industrial fans • horizontal drill presses • textile machinery • large forging presses FEATURES The Novibra Anti-vibration Plate, made of oil and grease resistant rubber material, is available either as a single (4.5 mm) or as a double (8 mm) version. The single version has ribs on one side only, while the double has ribs on both sides applied in a 90 degree angle to each other. APPLICATION The Novibra Anti-Vibration Plate is intended, primarily, for applications with low demands on vibration isolation. Typical installations would be machinery generating vibrations in the high frequency range, and also for tall unstable installations, which require secure attachments to the foundation. Good performance is also obtained when using the Novibra plate in the building and construction industry as support pads between flooring and joists. This application provides for cushioning of loads and isolation of high frequency vibrations within the building. If insufficient deflection is achieved by a single layer, multiple layers can be used by separating each layer with a steel plate for the purpose of weight distribution. In order to avoid direct contact between machine and foundation, a rubber bushing (e.g. rubber hose) should be installed in the mounting holes prior to installation of bolt and rubber washer. See ”Mountings instructions” on this page. Single Novibra plate Mounting instructions Double Novibra plate Type Single plate Double plate Art.No. 70136 70151 Dimensions in mm LxB H 500x600 4.5 500x600 8 Weight (kg) 1.210 1.815 M-max load kg/cm2 5 5 37 Novibra Anti-vibration Plate Load Single Novibra plate kp/cm2 MPa 5 0.5 4 0.4 3 0.3 2 0.2 1 0.1 0 0 1-layer 0 0.5 1.0 2-layer 3-layer 1.5 2.0 2.5 mm Static deflection Double Novibra plate kp/cm2 MPa 5 0.5 4 0.4 3 0.3 2 0.2 1 0.1 0 0 1-layer 0 38 1.0 2-layer 2.0 3.0 3-layer 4.0 5.0 mm Static deflection Novibra type TF FEATURES The TF mounting can be installed in a matter of minutes by following the instructions provided. There is no need to fix the machines to the floor since the rubber sole of the mounting keeps the machine in place. Whenever necessary, a machine can easily be re-positioned. The level can be adjusted with load applied. The rubber element of the TF mounting is oil and chemical resistant whilst all metal parts are zincplated and chromated for protection against corrosion. Models TF 250, TF 600 and TF 1200, also available in S/S (ISO 2604/11, BS 3605:1) APPLICATION Novibra type TF with level adjuster is a modern machine mounting suitable for a wide range of free standing workshop machines, like: • lathes • milling machines • grinding machines • multiple operation machinery • presses • plate shears • nibbling machines • punches and cutters • carpentry machines • plastic moulding machinery Type TF 250 TF 600 TF 1200 TF 3000 TF 4000 TF 6000 Art.No. 1860740 1860780 1860790 1860800 1860810 1860820 Dimensions in mm D H min H max 1) 69 23 1) 81 25 1) 108 29 1) 151 35 1) 170 39 1) 205 44 Overall bolt length 100 100 100 120 120 150 Thread G M 12 M 12 M 16 M 20 M 20 M 24 Weight (kg) 0.355 0.486 0.990 2.223 2.925 4.813 Max load (kg) 250 600 1200 3000 4000 6000 1) Levelling of the bolt up to its total lenght. 39 Novibra type TF Loading range per mounting (kg) Type of machine General workshop machines Max load (kg) 275 250 251– 600 601– 1200 1201– 3000 3001– 4000 Type of mounting 226– TF 250 TF 600 TF 1200 TF 3000 TF 4000 Presses and punches Number of strokes per minute 1– 125 126– 175 25– 125 126– 300 301– 600 601– 2400 2401– 3200 20– 100 101– 240 241– 480 481– 1600 1601– 2100 15– 85 86– 200 201– 400 401– 1000 1001– 1300 Mounting instructions Novibra type TFE Mounting TFE is a simpler version of type TF without level adjuster. It is used for machines which do not require height adjustment or where such function is already provided, e.g. by an adjusting screw in the machine. Both models also available in S/S (ISO 2604/11,BS 3605:1 ) Type TFE 601 TFE 1201 40 Art.No. 1861050 1861060 Dimensions in mm D H 80 25 109 29 Weight (kg) 0.375 0.925 Max load (kg) 800 1600 176– 225 10– 60 61– 150 151– 300 301– 750 751– 1000 Novibra type U FEATURES Novibra type U is a robust element consisting of 2 solid U-shaped steel parts securely bonded with rubber. To achieve higher resilience two holes in the rubber have been provided under the innershanks. The upper steel plate is to be mounted under the machine foot or baseplate by means of a bolt whereas the bottom plate should be secured to the floor by e.g. an expansion bolt. For certain applications a dowel pin may be adequate. APPLICATION Type U provides for a stable machine installation and is therefore particulary suitable for the vibration isolation of heavier machinery with relatively high interfering frequencies. Typical applications can be found on : • presses • punches • weaving machines • carpentry machines • church bells • transformers • printing machinery • other heavy high speed machines U 100 Load per mounting (kg) U 130 Load per mounting (kg) 500 1000 Hardness B Max 400 kg 400 300 600 Hardness A Max 200 kg 200 Type U 100 U 130 Hardness A Max 400 kg 400 100 0 Hardness B Max 800 kg 800 200 1.0 2.0 Art.No. Hardness A (40° IRH) 67363 67421 3.0 4.0 5.0 mm Art.No. Hardness B (60° IRH) B 67371 50 67439 70 L 100 130 0 Dimensions in mm H h G 42 12 M12 54 12 M12 1.0 Weight (kg) 0.650 1.318 2.0 3.0 4.0 5.0 mm M-Max(kg) A (40° IRH) B (60° IRH) 200 400 400 800 41 Novibra type SE FEATURES The SE-mounting consists of an annular rubber section, securely bonded to a single steel support plate. A clearance hole is provided which can either be left plain or tapped to suit the application. Since the rubber component is in direct contact with the surface, friction is sufficient to prevent the equipment from ”travelling”. APPLICATION Novibra type SE is most suitable for the isolation of high frequency disturbances and also provides reduction of structure borne noise. Specific applications are: • office equipment • textile machinery • domestic appliances • electric motors • weighing equipment Load per mounting (Kg) SE 750 1000 800 600 SE 250 400 200 SE 75 1 Type Art.No. Hardness R (50° IRH) D D1 d H SE 75 SE 250 SE 750 1661010 1861110 1861120 55 75 115 18 25 40 8 10 14 15 17 24 42 2 Dimensions in mm 3 4 5 Static deflection (mm) Weight M-Max (kg) t (kg) R (50° IRH) 3 4 4 0.069 0.172 0.456 150 400 1100 Novibra shockbuffer type ANB FEATURES Novibra buffer type ANB consists of a cylindrical rubber body bonded to a square baseplate of steel. Each corner of the baseplate has a fixing hole. Special high-hysteresis rubber compound is used to ensure as much energy absorption as possible so that the volume of the rubber is used at an optimum efficiency. It permits that for new machine developments simpler designs and lighter calculated forces can be considered which means lower costs. APPLICATIONS The Novibra shockbuffer type ANB is used to effectively damp movements of machines or machine components which need to be slowed down or stopped. Fig 1. Traverse crane with shock buffer ANB. Typical field applications would be: • wagons • cabinets • traverse cranes • forestry vehicles • lifting cranes • off-road material handling equipment • working beams • falling goods Through the excellent resilience of the rubber a high degree of energy absorption can be achieved. The rubber is stiffer for rapid dynamic processes than for slow static applications. With the same deformation this means that more energy is absorbed in fast processes than in slow ones. Diagram 1 shows the impact of the energy factor. Fig 2. Traverse crane with 2 ANB buffers connected in series. Type ANB 50 ANB 75 ANB 100 ANB 200 ANB 200 Art.No. 2255290 2255300 2255310 68569 68577 K 70 100 130 185 240 A 50 75 100 150 200 Dimensions in mm D d 50 7 75 9 100 11 150 13.5 200 13.5 H 43 63 84 126 168 t 3 3 4 6 8 Weight (kg) 0.2 0.5 1.2 3.9 9.1 F-Max (N) 8000 20000 41000 90000 180000 45 Novibra shockbuffer type ANB For calculation purposes the following equations can be used: E = m·v2 2 E = F·s F = m·a s = a·t2 2 v = a·t v = 2·a·s v = 2·g·h (1) (2) (3) (4) (5) (6) (7) applicable in free fall E = energy in Nm m = mass in kg v = velocity in m/s F = force in N s = distance in m a = acceleration in m/s2 t = time in s g = acceleration due to gravity 9.81 m/s2 h = height in m d = spring travel in m Equation (4)- (7) at start velocity = 0 Force Energy Diagram 1 46 Diagram 2 Force Force Energy Energy Diagram 3 Novibra shockbuffer type ANB CALCULATION EXAMPLES The figures in parenthesis refer to the equations. EXAMPLE 1: FREE FALL CALCULATION 1850 kg weight is to be dropped 1.83 metres onto 4 ANB buffers. What size ANB should be used? What force will be transmitted to the floor? Energy E = F · S (2) = 1.83 · 1850 · 9.81 = 33212 NM Velocity at impact (shock velocity) V = 2 · g · h (7)= 2 · 9.81 · 1.83 = 6 m/s. Shock velocity m/s 10 8 50 % deformation of rubber 6 30 % 4 REFER TO ENERGY FACTOR GRAPH If 50% deformation is allowed, the energy factor at 6 m/s is 0.4. Then dynamic energy 33212 Nm corresponds to 33212 · 0.4 = 13285 Nm static energy and for 4 buffers the static energy per buffer is 3320 Nm. REFER TO FORCE-ENERGY DIAGRAM Select ANB 200 which can each absorb up to 4300 Nm at 80 mm compression (which is 50% of static height) or will compress 76 mm at 3320 Nm. Force at impact surface = force at 76 mm deflection / 0.4 = 150 / 0.4 =375 kN per buffer = 1500 kN for 4 buffers Hence if 1850 kg is dropped 1.83 metres onto 4 x ANB 200 buffers they will each compress 76 mm and the total force on the floor will be 1500 kN. EXAMPLE 2A: CRANE BUFFER CALCULATION A crane weighs 2000 kg and travels at 1.6 m/s. What size ANB buffers should be used to stop it and what will the final force be? The dynamic or kinetic energy E = 1 = m · v2 = 2000 · 1.62 = 2560 Nm (1) 2 2 REFER TO ENERGY FACTOR GRAPH Assuming a 50% deformation, the energy factor = 0.75 at 1.6 m/s. Hence the equivalent static energy is 2560 · 0.75 = 1920 Nm. Then for 2 buffers the static energy is 960 Nm per buffer. REFER TO FORCE-ENERGY DIAGRAM ANB 150 buffers can be chosen with a deflection at 960 Nm of 49 mm, which is only 41% of a free height of 120 mm, whereas 50% had been assumed. With the energy factor reduced to 0.72 (for 41% deflection at 1.6 m/s) the static energy is: 15 % 2 0 0 Diagram 4 0.2 0.4 0.6 0.8 1.0 Energy factor Hence 2 x ANB 150 buffers will deflect 48.5 mm and transmit a force of 71 kN or 7240 kg each, i.e. the structure must withstand 14.6 tons. EXAMPLE 2B: CRANE BUFFER CALCULATION How can the dynamic force calculated in example 2a be reduced, and by how much? The force will be reduced and the deflection will be increased if ANB 150 buffers are connected in series (i.e. 4 buffers instead of 2) as illustrated by fig. 2. Then, assuming 30% deformation the energy factor at 1.6 m/s = 0.68. Hence the equivalent static energy is 2560 · 0.68 = 1740 Nm and for 4 buffers the static energy is 435 Nm per buffer. The force-Energy diagram shows that at 435 Nm, buffer ANB 150 deforms 35 mm. This corresponds to 29.2% of a free height of 120 mm which is close to assumed value 30%. Then the static force at 35 mm deformation is 26 kN and the dynamic load at impact will be: 26 / 0.68 = 38 kN Hence 4 x ANB 150 buffers connected 2 + 2 will give a total deflection of 70 mm with a final force per double arrangement of 38 kN or 3870 kg, i.e. the structure must withstand 7.7 tons. 2560/2 x 0.72 = 922 Nm REFER TO FORCE-ENERGY DIAGRAM FOR ANB 150 At 922 Nm static energy, the deflection is 48.5 mm (close to 49 mm). Then the static force at 48.5 mm deflection is about 51 kN. Therefore the dynamic load (Force at impact) = 51 / 0.72 = 71 kN. 47 Novibra sleeves type VP FEATURES Novibra type VP consists of two concentric sleeves with rubber securely bonded between them. Designed to take up torsional movements and axial and radial loads. The rubber is prestressed to give maximum dynamic strength and durability. The bonded rubber takes up the full movement. Lubrication or other bearing maintenance is not required. The sleeves also have excellent sound and vibration isolation capacity, which makes structures fitted with Novibra type VP sleeves both silent and vibrationfree. APPLICATION Novibra type VP sleeves are used to solve bearing problems in vibrating and oscillating constructions. Suitable applications are linkage systems in: • Cars • Railway carriages • Tractors • Trucks • Agricultural machinery • Bulldozers • Vibratory screens Tolerances d D l L Designation Dimensions in mm Type d D L l Max Mv Nm/ degr. 10 10 15 15 20 20 25 25 30 30 35 35 40 40 45 45 50 50 25 25 35 35 45 45 50 50 60 60 65 65 70 70 75 75 80 80 25 40 30 50 40 75 45 85 55 100 60 110 65 120 70 130 75 140 20 35 25 45 35 70 40 80 45 90 50 100 55 110 60 120 65 130 5.0 6.0 9.0 15.0 24.0 48.0 46.0 69.0 78.0 135.0 93.0 200.0 138.0 240.0 240.0 340.0 275.0 450.0 VP 10/2525 VP 10/2540 VP 15/3530 VP 15/3550 VP 20/4540 VP 20/4575 VP 25/5045 VP 25/5085 VP 30/6055 VP 30/60100 VP 35/6560 VP 35/65110 VP 40/7065 VP 40/70120 VP 45/7570 VP 45/75130 VP 50/8075 VP 50/80140 48 Torque Max b degr. 15 15 15 15 15 15 14 14 14 14 12 11 12 11 12 10 11 10 Spring const. Nm/degr. Max Mb Nm 0.3 0.4 0.6 1.0 1.6 3.2 3.3 4.9 5.6 9.7 7.7 17.0 11.5 22.0 20.0 34.0 25.0 45.0 6.0 38.0 12.0 120.0 45.0 365.0 96.0 730.0 135.0 1200.0 180.0 1560.0 290.0 2520.0 320.0 5040.0 700.0 5160.0 10-25±0,1 30-50±0,2 +0,25 +0,05 with chamfer at one end ±0,5 ±0,25 Bending Axial load Max a degr. Spring const. Nm/degr. Max Fa N 0.7 4.8 1.5 15.0 5.6 46.0 12.0 92.0 17.0 150.0 23.0 260.0 41.0 420.0 45.0 840.0 100.0 860.0 750 1500 1500 2500 2600 5500 3800 7500 5100 10500 6600 13000 8300 18000 10000 20000 12000 23500 8 8 8 8 8 8 8 8 8 8 6 6 7 6 7 6 7 6 Radial load Aprox. weight Spring const. N/mm Max Fr N Spring const. N/mm 170 380 220 520 330 820 450 960 530 1150 720 1550 870 1750 1100 2150 1350 2650 2300 3800 3500 6000 6800 13500 9000 18000 12000 25000 16000 31500 20500 40000 24000 40000 28500 49000 2000 2350 3000 6500 4000 8000 4500 10500 5000 20000 8500 29400 17000 37750 20000 42350 30000 43700 (kg) 0.035 0.057 0.076 0.120 0.160 0.315 0.211 0.416 0.335 0.630 0.434 0.810 0.555 1.090 0.673 1.280 0.767 1.484 Novibra Bobbins APPLICATIONS AND FEATURES A supplementary range of cylindrical mountings for a wide range of applications. They can be loaded either in compression or shear taking into consideration individual demands for actual applications. Made of natural rubber in hardness A (40-45 ° IRH) or hardness B (55-60 ° IRH). Type A Type B Type C Type D Type KD Type E Compression load Shear load 49 Novibra Bobbins Cylindrical mountings type A Type D/H A 10/10 A 15/15 A 20/15 A 20/20 A 20/25 A 25/10 A 25/15 A 25/20 A 25/25 A 25/30 A 30/15 A 30/20 A 30/30 A 40/30 A 40/40 A 50/25 A 50/30 A 50/40 A 50/45 A 50/50 A 75/40 A 75/50 A 100/55 GxL M M M M M M M M M M M M M M M M M M M M M M M 4x10 4x13 6x15 6x15 6x15 6x18 6x18 6x18 6x18 6x18 8x20 8x20 8x20 8x23 8x23 10x28 10x25 10x25 10x25 10x25 12x37 12x37 16x41 Art.No. Hardn. B Hardness B Compression load kcomp Fmax (N/mm) (N) 1255720 1255740 1255770 1255300 1255780 1255790 1255800 1255810 1255310 1255820 1255830 1255320 1255840 1255330 1255850 1255860 1255870 1255340 1255880 1255350 1255360 1255900 1255910 53 73 145 96 72 574 247 157 116 93 453 261 143 271 184 652 472 306 261 228 827 579 994 Art.No. Hardn. B Hardness B Compression load kcomp Fmax (N/mm) (N) 1255960 1255970 1256010 1256040 1256060 1256090 1256100 1256120 1256160 1256170 159 105 127 285 156 515 334 248 550 1914 77 170 327 303 292 755 556 495 471 458 930 771 680 1288 1202 2442 2193 1970 1915 1877 5181 4670 8908 Shear load kshear (N/mm) 10 13 25 18 14 64 38 27 21 17 61 42 26 47 34 93 75 54 47 42 124 97 155 Fmax (N) 31 69 123 123 123 192 192 192 192 192 277 277 277 493 493 770 770 770 770 770 1732 1732 3079 Cylindrical mountings type B Type D/H B 20/15 B 20/20 B 25/25 B 30/20 B 30/30 B 50/30 B 50/40 B 50/50 B 75/55 B 100/40 GxL (S) M 6x15 (6) M 6x15 (6) M 6x18 (6) M 8x20 (8) M 8x20 (8) M10x28 (10) M10x28 (10) M10x25 (10) M12x37 (12) M16x41 (16) S = internal thread lenght 50 298 275 428 701 618 1994 1791 1706 4111 9992 Shear load kshear (N/mm) 25 18 21 42 26 75 54 42 87 221 Fmax (N) 123 123 192 277 277 770 770 770 1732 3079 Novibra Bobbins Cylindrical mountings type C Type D/H GxS C 10/10 C 15/15 C 20/20 C 20/25 C 20/30 C 25/20 C 30/28 C 30/30 C 30/36 C 40/30 C 40/40 C 50/36 C 50/40 C 50/42 C 50x48 C 75/36 C 75/42 C 75/48 C 75/55 C 100/42 C 100/48 C 100/54 C 140/42 C 140/48 C 140/60 Art.No. Hardn. A M 4x4 M 4x4 M 6x6 M 6x6 M 6x6 M 6x6 M 8x8 M 8x8 M 8x8 M 8x8 M 8x8 M10x10 M10x10 M10x10 M10x10 M12x12 M12x12 M12x12 M12x12 M16x16 M16x16 M 16/16 M20x20 M20x20 M20x20 66514 66530 66449 66498 66589 66639 66688 66738 66787 66837 66886 66936 66985 67124 67173 67223 Art.No. Hardn. B 1256200 1256210 66522 1256220 66548 1256230 66456 1255410 66506 1255420 1256260 66597 1256280 66647 66696 66746 66795 66845 1255430 66894 66944 66993 67132 67181 67231 Hardness A Compression load kcomp Fmax (N/mm) (N) Shear load kshear Fmax (N/mm) (N) 53 112 8 57 31 104 5 57 87 256 13 127 62 241 10 127 203 774 28 353 160 133 608 450 356 726 697 2247 1987 1828 23 20 65 54 46 353 353 795 795 795 848 652 500 2070 1724 1070 4750 3750 3250 12000 10000 7500 96 83 72 192 165 128 1414 1414 1414 2771 2771 2771 Hardness B Compression load kcomp Fmax (N/mm) (N) 63 86 114 85 69 186 186 169 134 320 217 420 361 338 283 1180 900 728 596 1884 1474 1210 5139 3799 2439 61 134 238 230 226 390 544 536 521 1015 947 1603 1552 1533 1490 4363 3975 3738 3562 8321 7573 7083 22201 19146 15804 Shear load kshear Fmax (N/mm) (N) 10 13 18 14 11 27 28 26 21 47 34 61 54 51 44 141 118 101 87 209 180 158 419 359 279 31 69 123 123 123 192 277 277 277 493 493 770 770 770 770 1732 1732 1732 1732 3079 3079 3079 6034 6034 6034 S = internal thread lenght Cylindrical mountings type D/KD/E Type D/H GxL D 30/17 D 30/25 D 30/30 D 50/20 D 50/30 D 50/42 KD25/12 KD25/17 KD50/18 M M M M M M M M M E 30/17 E 50/36 E 50/45 GxS M 8x8 M 10x10 M 10x10 Art.No. Hardness A 8x20 8x25 8x25 10x28 10x28 10x15 6x16 6x18 10x28 Art.No. Hardness B Compression load Hardness A Hardness B Fmax Fmax (N) (N) 1533350 1534880 1257030 1534460 1534390 1534220 1534150 1533450 1256940 1256930 1659990 1661280 1659870 600 450 425 1900 1600 1400 300 250 1400 225 550 550 1100 S = internal thread lenght 51 Novibra type HA FEATURES Novibra type HA is a height adjuster made in corrosion protected steel. The steel is zink plated and chromated according to DIN 50691/ISO 2081. The height adjuster is supplied complete with washer and nut for the fastening to the mounting and two nuts and a lock washer for the engine foot fastening. The HA height adjustment facilities precise coupling alignment for engine installations and boat building tolerances. APPLICATION Novibra type HA is available in 4 versions to suit the small and medium range of Novibra AV-mountings, as listed on table below. It also allows Novibra mountings to be retrofitted to existing installations where original spares are unobtainable. Notes : • For optimum solutions where close coupling tolerances are required, leave the mountings to settle for 24 hours before final alignment of the engine installation. E C • For securing the bolt into the mounting, it is C recommended to apply Loctite. 1 • For the dimensions HA 16/16 and 16/20 it is necessary to use a larger washer than nr 4 in the sketsch, approx 30% of the diameter of the upper part of the cover. 3 A 1 • For mobile applications it is recomended to use a washer (see part 4 in table below) that has the same size as the diameter of the upper part of the cover for the corresponding RA, RAB and RAEM mount. 2 T 4 B • The heightadjuster HA can be used together with Novibra type M-mount. See description of M-mount. D Type Art.no. Dimensions in mm A B C T Thread D E HA 12/12 2230630 65 20 8 8 M12 M12x1.25 M12x1.25 M12x1.25 12.5x20.5 13x24x2 HA 12/16 2230640 65 23 10 10 M12 M16x1.5 M16x1.5 M16x1.5 16.5x26 15x26x2 HA 16/16 2230650 65 24 10 11 M16 M16x1.5 M16x1.5 M16x1.5 16.5x26 17x30x3 HA 16/20 2230660 80 26 12 13 M16 M20x2 M20x2 M20x2 21x33 20x36x3 52 1 Nut 2 Low nut 3 4 Serrated Plain lock washer washer For mounting sizes RAB-RA 100 M12-RA 200 M12-RA 350 M12-RAEM 60 RA 125 EM M12-RAEM 350 M12 RAB-RA 100 M12-RA 200 M12-RA 350 M12-RAEM 60 RA 125 EM M12-RA 350 EM M12 RA 350 M16-RA 500-RA 800-RAEM 350 M16-RAEM 800 RA 350 M16-RA 500-RA 800-RAEM 350 M16-RAEM 800 Novibra Novibra Questionnaire Customer Date Contactperson Phone Fax TECHNICAL DATA FOR THE APPLICATION • Type of equipment • Model and manufacturer • Environment for the application ❏ Industrial ❏ Residential ❍ Stationary ❍ Mobile ❏ Marine ❍ Commercial vessel (e.g. hospital, hotel, office) sea going: Yes ❍ Pleasure craft ❍ High speed craft ❏ No ❏ For propulsion engines, see next page • Total supported weight: • Number of mounting points: • Position centre of gravity ❏ Centred ❏ Offset, please present outline drawing • Disturbing frequency range (e.g. rpm, Hz, strokes/min): • Is a combustion engine installed in the machinery? Yes ❏ ❏ If yes, number of cylinders: No Four-stroke ❏ under the frame • Position of mountings: ❏ ❏ Two-stroke ❏ under the engine Additional comments: Novibra recommendation: Mounting type Date: Sign: : Number of mountings : Degree of isolation : % Please copy and fax questionnaire to nearest Novibra office. 53 Novibra Questionnaire Data required for engine analysis Customer Date Contact Phone Fax Front 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. Back Engine model & manufacturer……………………………………………………… Transmission model & manufacturer ……………………………………………… Engine weight (wet, including accessories) ………………………………………… Transmission weight (wet) ………………………………………………………… Engine C. G. height above/below CCL. …………………………………………… Transmission C. G. height above/below CCL ……………………………………… Front mounting position above/below CCL.………………………………………… Rear mounting position above/below CCL. ………………………………………… Engine C. G. position behind front mounting.……………………………………… Rear mounting position behind front mounting …………………………………… Transmission C. G. position behind front mounting………………………………… Rear mounting spread ……………………………………………………………… Front mounting spread .…………………………………………………………… Engine speed -idle ……………………………………………… -operating ……………………………………………… Number of cylinders and arrangement (1-6. 90°V-8, etc) ………………………… Two or four stroke…………………………………………………………………… Tail mounting position above/below CCL (if applicable)……………… …………… Tail support position behind front mounting (if applicable) ………………………… Tail mounting spread (if applicable) ……………………………………………… Moments of inertia of total system or for all components (engine, transmission, etc) (If these are not available, a drawing of the enginetransmission system is required) Output torque (including highest gear reduction)…………………………………… Is there a thrust bearing? Yes ❏ No ❏ If no, what is the propeller thrust..............................N Me= Mt= He= Ht= Hf= Hr= Pe= Pr= Pt= Sr= Sf= ni= no= kg kg mm mm mm mm mm mm mm mm mm rpm rpm Hs= Ps= Ss= lxx= lyv= lzz= To= mm mm mm kgm2 kgm2 kgm2 Nm Model & manufacturer of elastic coupling: Dynamic stiffness of the coupling: axial ........................N/mm radial................N/mm Novibra recommendation: Mounting type Date: Sign: : Number of mountings : Degree of isolation 54 : %