torque limiter
Transcription
torque limiter
TORQUE LIMITER T SERIES Direct Replacement for TORQ-GARD™ AUTOGARD T - SERIES TORQUE LIMITER Quality and Autogard are synonymous with overload protection. The company's reputation for high quality products is derived from over 40 years of design innovation and production. Autogard products are manufactured to meet ISO 9001 using the latest machine tools and high quality materials. B A F C E D The Autogard T-Series mechanical torque limiter is specifically designed to replace the Torq-Gard™ TGC Series. The Autogard T-Series matches all critical envelope dimensions and meets or exceeds maximum bore size, maximum torques and speed limitations of the Torq-Gard™ TGC Series.The Autogard T-Series can be furnished complete as a coupling style or with a sprocket, sheave, etc. The T - Series torque limiter is a state of the art mechanical device that will disengage at a pre-set torque value. The trip torque is set above the normal start-up and operating torque, but below a torque setting which would normally damage the driving and /or driven equipment. In the event of a jam, the torque limiter eliminates the threat of damage by disconnecting the inertia in the drive train. Disengagement on Overload In the normal drive condition, torque is transmitted through balls (A) which are located in holes in flange (B) and detents in drive plate (C). The balls are held in the detents under pressure from springs (D) When the driven machine either jams or an overload occurs which is greater than the torque setting, the balls roll out of their seats and roll freely between thrust ring (E) and the flat surface of the drive plate (C). The axial movement of balls (A) during this process causes switch plate (F) to move and thereby provides a means of detecting disengagement. It is important to stop the motor promptly when an overload occurs. Re-engagement Re-engagement occurs when the balls rotate back into the detents located in the drive plate (C). The specifications contained within this brochure are correct at the time of going to print. Autogard is continually reviewing and updating the specifications on all its product ranges and therefore reserves the right to change any details. 1 AUTOGARD T - SERIES TORQUE LIMITER The Autogard torque limiter acts like a mechanical "circuit breaker" to protect the weakest member of the drive train. The most effective location for the torque limiter is as close as possible to the component being protected. Drive trains having large reduction ratios should be given special consideration if the torque limiter is to be mounted at the high speed end. Consult Autogard for final drives with 300:1 reduction or higher. When locating the torque limiter on the high speed side of the drive, allow for starting torque. The Autogard torque limiter is suitable for chain, belt and gear drives and is also available with rigid and flexible couplings. Coupling Application - Recommended - Alternative Offset Application Features and Benefits: Selection: Direct Drop-In Replacement. The T-Series matches all critical envelope dimensions and meets or exceeds max.bore size, torques and speed limitations of the Torq-Gard™ TGC Series. Data required for torque limiter selection. Proven Design with thousands of units successfully in operation. - Recommended - Alternative - Horsepower and rpm of the driver. - Shaft details of the driving and driven equipment. - Drive medium Robust All Steel Construction – Also available in stainless steel or nickel plated. (1) Calculate the nominal torque. Standard Designs can accommodate large torque ranges. Torque (lbf-ins) = Horsepower (HP) x 63025 / rpm Bored to Order – No sleeves Fine-Thread Adjusting Nut – Allows accurate torque setting. Consideration should then be given to start torque or other special circumstances depending on the position chosen in the drive train. Choose a set torque with a suitable margin over nominal. Instantaneous Disengagement protects equipment from damaging inertias. Select the torque limiter which has a higher torque rating. Bi-directional operation. Enclosed and Sealed Design – Excludes contaminants. Available with Split-and-Clamp Hub Option. • Also Available - Nickel plated and stainless steel versions. Large Number of Styles ensures the right solution is available for all applications e.g. - Timing HTD & V-Belt drives - Chain and - Gear drives - Flexible or rigid couplings - Flywheel or large gear mounting - Special or unusual drive conditions Ordering the T-Series Torque Limiter When ordering please provide the following designation: Model & Size / S1 Bore / S2 Bore S1 Bore & S2 Bore – Please specify metric or imperial. Standard bore tolerance = ISO H8. (2) Check Limiting Conditions: (a) Check running speed (b) Check hub bore capacity (c) Check the torque limiter dimensions such as the overall length and outside diameter. (3) Select and specify the appropriate drive medium or coupling. All Autogard T-Series units may be supplied from the factory at a pre-set torque and with required drive medium assembled to the unit Example: T60 / S1 - 1.000 in / S2 - 1.125 in Refers to a Model/Size T60 Torque Limiter (page 3). Bore S1 = 1.000 in Bore S2 = 1.125 in - Torque setting or Torque range required. - Pulley or sprocket details where required. 2 AUTOGARD T - SERIES MODEL T0 For use with sprockets, pulleys or gears Technical Details Model/Size Torque Speed Weight Mass Moment of Inertia (in-lbs) (rpm) (1) (lbs) (3) (lb.in2) (3) Max Max (2) Hub Side Adaptor Side T20 T60 T200 T400 T800 400 900 2.2 1.6 0.5 900 900 6.0 8.1 3.1 3,000 900 16 44 18 6,000 900 52 317 130 12,000 900 53 320 130 1) See page 10 for spring selection and torque ranges with specific springs. 2) Higher speeds may be allowed under certain conditions. Please consult Autogard. 3) Weights and Inertias apply to maximum (S1) bore, full set of springs and excludes sprockets, pulleys etc. Dimensional Details (in) Model/Size Max. Bore S1 A B D E H I J L X (4) T20 T60 T200 T400 T800 0.8125 3.94 2.36 2.62 2.16 0.35 0.25 0.53 2.25 0.06 1.250 5.25 3.38 3.63 3.09 0.69 0.40 0.66 3.50 0.09 1.9375 7.00 5.00 5.38 4.64 0.78 0.39 1.00 4.31 0.11 2.500 10.75 7.50 8.00 6.34 1.30 0.42 1.44 6.19 0.16 2.500 10.75 7.50 8.00 6.34 1.30 0.42 1.44 6.19 0.16 4) Rectangular keys must be used for maximum bore diameters. Smallest Sprocket (Number of Teeth) Model/ Size /8” Pitch 3 T20 T60 T200 T400 T800 24 32 46 67 67 /2” Pitch 1 19 25 35 51 51 /8” Pitch 5 16 21 29 41 41 /4” Pitch 1” Pitch Smallest Pulley (5) Dia (in) 14 18 25 35 35 11 15 20 27 27 3.00 4.00 5.88 8.50 8.50 3 Drive Media Fixing Details C N P S T (in) (Holes) (in) (in) (Thread) 1.965 2.875 4.500 6.500 6.500 6 3 3 3 3 1.562/1.560 2.375/2.373 3.250/3.247 4.500/4.497 4.500/4.497 0.37 0.56 0.75 1.12 1.12 #10 - 24 UNC 1 ” /4 - 20 UNC 3 ” /8 - 16 UNC 1 ” /2 - 13 UNC 1 ” /2 - 13 UNC 5) The pulley diameter quoted is to the bottom of the V-pulley or the inside diameter for the flange of the timing pulley. 3 AUTOGARD T - SERIES MODEL T0E - ECONOMICAL For use with sprockets, pulleys or gears Technical Details Model/Size Torque Speed Weight Mass Moment of Inertia (in-lbs) (rpm) (1) (lbs) (3) (lb.in2) (3) Max Max (2) Hub Side Adaptor Side T20E T60E T200E T400E T800E 400 900 1.7 0.8 0.5 900 900 4.9 4.6 3.1 3,000 900 13 25 18 6,000 900 41 167 130 12,000 900 42 170 130 1) See page 10 for spring selection and torque ranges with specific springs. 2) Higher speeds may be allowed under certain conditions. Please consult Autogard. 3) Weights and Inertias apply to maximum (S1) bore, full set of springs and excludes sprockets, pulleys etc. Dimensional Details (in) Model/Size Max. Bore S1 A B E I J L X (4) T20E T60E T200E T400E T800E 0.8125 3.00 2.36 2.16 0.25 0.52 2.00 0.06 1.250 4.00 3.38 3.09 0.40 0.86 3.19 0.09 1.9375 5.62 5.00 4.64 0.39 1.14 3.85 0.11 2.500 8.00 7.50 6.34 0.42 1.57 5.50 0.16 2.500 8.00 7.50 6.34 0.42 1.57 5.50 0.16 4) Rectangular keys must be used for maximum bore diameters. Smallest Sprocket (Number of Teeth) Model/ Size /8” Pitch 3 T20E T60E T200E T400E T800E 24 32 46 67 67 /2” Pitch 1 19 25 35 51 51 /8” Pitch 5 16 21 29 41 41 /4” Pitch 1” Pitch Smallest Pulley (5) Dia (in) 14 18 25 35 35 11 15 20 27 27 3.00 4.00 5.88 8.50 8.50 3 Drive Media Fixing Details C N P S T (in) (Holes) (in) (in) (Thread) 1.965 2.875 4.500 6.500 6.500 6 3 3 3 3 1.562/1.560 2.375/2.373 3.250/3.247 4.500/4.497 4.500/4.497 0.37 0.56 0.75 1.12 1.12 #10 - 24 UNC 1 ” /4 - 20 UNC 3 ” /8 - 16 UNC 1 ” /2 - 13 UNC 1 ” /2 - 13 UNC 5) The pulley diameter quoted is to the bottom of the V-pulley or the inside diameter for the flange of the timing pulley. 4 AUTOGARD T - SERIES MODEL TC - CLAMP COLLAR For use with sprockets, pulleys or gears DMS (Drive Media Side) ANS (Adjusting Nut Side) DBL (Double/Both Sides) Technical Details Model/Size Torque Speed Weight Weight Mass Moment of Inertia (in-lbs) (rpm) (1) (lbs) (3) (lbs) (3) T20C T60C T200C T400C T800C 400 900 2.2 0.3 1.6 0.5 0.1 900 900 6.0 0.5 8.1 3.1 0.5 3,000 900 16 1.4 44 18 2.8 6,000 900 52 2.7 317 130 9.0 12,000 900 53 2.7 320 130 9.0 Max Max (2) Extra / collar Hub Side Adaptor Side (lb.in2) (3) Extra / collar 1) See page 10 for spring selection and torque ranges with specific springs. 2) Higher speeds may be allowed under certain conditions. Please consult Autogard. 3) Weights and Inertias apply to maximum (S1) bore, full set of springs and excludes sprockets, pulleys etc. Dimensional Details (in) Model/Size Max. Bore S1 L1 L2 L3 J1 J2 U V Z (4) T20C T60C T200C T400C T800C 0.8125 2.56 2.56 3.09 0.31 0.84 1.75 0.50 0.53 1.250 3.88 3.88 4.57 0.35 1.04 2.38 0.56 0.69 1.9375 4.79 4.79 5.66 0.54 1.42 3.50 0.75 0.94 2.500 6.57 6.57 7.63 0.75 1.82 4.50 0.88 1.06 2.500 6.57 6.57 7.63 0.75 1.82 4.50 0.88 1.06 4) Rectangular keys must be used for maximum bore diameters. 5) All clamp versions available also for Model T0E. 6) TC-ANS is also available with coupling types. Ordering the TC- Series Torque Limiter When ordering please provide the following designation Model & Size / Clamp Collar Location / S1 Bore DMS = Drive Media Side location of Clamp Collar ANS = Adjusting Nut Side location of Clamp Collar DBL = Clamp Collar on both ends 5 Example: T60C-DMS / S1 - 1.000 in Refers to a Model/Size T60C Torque Limiter Clamp Collar is located on the drive media side (refer drawing) Bore S1 = 1.000 in - Torque setting or Torque range required. - Pulley or sprocket details where required. - Standards for boring are noted on page 2. AUTOGARD T - SERIES MODEL T4 - RIGID COUPLING For use with self aligning equipment Technical Details Model/Size Torque Speed Weight Mass Moment of Inertia (in-lbs) (rpm) (1) (lbs) (3) (lb.in2) (3) (2) Max Max Side 1 Side 2 T24 T64 T204 T404 T804 400 900 2.9 1.6 1.0 900 900 7.8 8.1 6.0 3,000 900 22 44 41 6,000 900 69 317 25 12,000 900 69 320 250 1) See page 10 for spring selection and torque ranges with specific springs. 2) Higher speeds may be allowed under certain conditions. Please consult Autogard. 3) Weights and Inertias apply to maximum (S1) & (S2) bores and a full set of springs. Dimensional Details (in) Model/Size Max. Bore S1 Max. Bore S2 A D E J K L M R T1 T2 X (4) (4) T24 T64 T204 T404 T804 0.8125 1.000 3.94 2.62 2.16 0.53 1.00 3.50 1.56 2.36 2.25 1.19 0.06 1.250 1.750 5.25 3.63 3.09 0.66 1.58 5.31 2.38 3.37 3.50 1.75 0.09 1.9375 2.750 7.00 5.38 4.64 1.00 1.97 6.81 3.63 5.25 4.31 2.34 0.11 2.500 3.500 10.75 8.00 6.34 1.44 2.37 9.31 5.00 7.50 6.19 3.00 0.16 2.500 3.500 10.75 8.00 6.34 1.44 2.37 9.31 5.00 7.50 6.19 3.00 0.16 4) Rectangular keys must be used for maximum bore diameters. CAUTION: The rigid coupling does not allow angular or parallel misalignment. 6 AUTOGARD T - SERIES MODEL T5 - DISC COUPLING The model T5 includes the Autoflex SF torsionally rigid disc coupling for angular and axial misalignment. The Autoflex ES double flex spacer coupling can also be supplied which accomodates angular, axial and parallel offset misalignment. T5 - SF Style Technical Details Model/Size Torque Speed Weight Mass Moment of Inertia (in-lbs) (rpm) (1) (lbs) (3) (2) Max Max Side 1 (lb.in ) 2 (3) Side 2 Angular - SF Angular - ES Axial - SF Maximum Axial - ES Coupling Misalignments Parallel - SF Parallel - ES Combined 1) 2) 3) 4) (º) (º) (in) (in) (in) (in) (in)(4) T5 - ES Style T25/118-6 T65/200-6 T205/256-6 T405/350-6 T805/350-6 400 900 4.4 1.6 3.2 0.5 1.0 +/– 0.013 +/– 0.026 0 0.015 +/– 0.013 900 900 12.9 8.1 13.6 0.5 1.0 +/– 0.019 +/– 0.038 0 0.017 +/– 0.019 3,000 900 27 44 40 0.5 1.0 +/– 0.023 +/– 0.046 0 0.017 +/– 0.023 6,000 900 75 317 238 0.5 1.0 +/– 0.029 +/– 0.058 0 0.020 +/– 0.029 12,000 900 75 320 238 0.5 1.0 +/– 0.029 +/– 0.058 0 0.020 +/– 0.029 See page 10 for spring selection and torque ranges with specific springs. Higher speeds may be allowed under certain conditions. Please consult Autogard. Weights and Inertias apply to SF version with maximum (S1) & (S2) bores and full set of springs. This is the maximum variation in G measured around the periphery. It corresponds to the maximum combined angular, axial and parallel misalignments. Dimensional Details (in) Model/Size Max. Bore S1 Max. Bore S2 A D E G G1 J K L L1 M R T1 T2 X 7 (5) (5) (6) (6) T25/118-6 T65/200-6 T205/256-6 T405/350-6 T805/350-6 0.8125 1.1875 3.94 2.62 2.16 0.29 1.89 0.53 0.91 4.37 5.97 1.72 3.15 2.25 1.28 0.06 1.250 1.625 5.25 3.63 3.09 0.37 2.28 0.66 1.31 6.28 8.19 2.78 4.33 3.50 1.81 0.09 1.9375 2.250 7.00 5.38 4.64 0.37 2.28 1.00 1.76 7.55 9.46 3.58 5.24 4.31 2.26 0.11 2.500 3.500 10.75 8.00 6.34 0.38 2.62 1.44 2.33 10.10 12.34 4.84 6.69 6.19 2.89 0.16 2.500 3.500 10.75 8.00 6.34 0.38 2.62 1.44 2.33 10.10 12.34 4.84 6.69 6.19 2.89 0.16 5) Rectangular keys must be used for maximum bore diameters. 6) G1 & L1 are minimum, longer spacers available. AUTOGARD T - SERIES MODEL T6S - SAMIFLEX COUPLING The model T6S includes the Samiflex torsionally soft coupling which accomodates angular, axial and parallel offset misalignments. The Samiflex coupling provides a quick and easy method of replacing the insert and/or disconnecting the drive. Technical Details Model/Size Torque Speed Weight Mass Moment of Inertia Maximum Coupling Misalignments (in-lbs) (rpm) (1) (lbs) (3) Max Max (2) Side 1 (lb.in ) 2 (3) Side 2 Angular (º) Axial (in) Parallel (in) T26S/A1 T66S/A2 T206S/A4 T406S/A5 T806S/A5 400 900 3.4 1.6 3.3 2.0 + 0.02 0.040 900 900 8.8 8.1 15.4 2.0 +0.02 0.040 3,000 900 27 44 208 2.0 +0.03 0.058 6,000 900 76 317 532 1.3 +0.04 0.058 12,000 900 77 320 532 1.3 +0.04 0.058 1) See page 10 for spring selection and torque ranges with specific springs. 2) Higher speeds may be allowed under certain conditions. Please consult Autogard. 3) Weights and Inertias apply to maximum (S1) & (S2) bores and full set of springs. Dimensional Details (in) Model/Size Max. Bore S1 Max. Bore S2 A B C D E G J K L M R T1 T2 T3 X (4) (4) T26S/A1 T66S/A2 T206S/A4 T406S/A5 T806S/A5 0.8125 1.625 3.94 3.27 0.87 2.62 2.16 0.06 0.53 0.00 4.70 2.56 2.56 2.25 1.34 1.76 0.06 1.250 2.125 5.25 4.37 1.30 3.63 3.09 0.10 0.66 1.42 6.96 3.15 3.39 3.50 1.85 2.45 0.09 1.9375 3.375 7.00 7.17 2.01 5.38 4.64 0.14 1.00 1.85 9.36 5.31 5.91 4.31 2.48 3.47 0.11 2.500 4.375 10.75 8.86 2.32 8.00 6.34 0.14 1.44 2.24 12.36 6.30 7.48 6.19 3.03 4.18 0.16 2.500 4.375 10.75 8.86 2.32 8.00 6.34 0.14 1.44 2.24 12.36 6.30 7.48 6.19 3.03 4.18 0.16 4) Rectangular keys must be used for maximum bore diameters. 8 AUTOGARD T - SERIES MODEL T6N - TORSIONAL SOFT COUPLING The model T6N includes a traditional coupling which accomodates angular, axial and parallel offset misalignment. Technical Details Model/Size Torque Speed Weight Mass Moment of Inertia Maximum Coupling Misalignments (in-lbs) (rpm) (1) (lbs) (3) (lb.in2) (3) Max Max (2) Side 1 Side 2 Angular (º) Axial (in) Parallel (in) T26N/80 T66N/110 T206N/140 T406N/200 T806N/200 400 900 3.7 1.6 1.9 0.2 +/– 0.04 0.010 900 900 15.7 8.1 10 0.2 +/– 0.04 0.012 3,000 900 29 44 45 0.2 +/– 0.04 0.014 6,000 900 81 317 339 0.2 +/– 0.08 0.018 12,000 900 81 320 339 0.2 +/– 0.08 0.018 1) See page 10 for spring selection and torque ranges with specific springs. 2) Higher speeds may be allowed under certain conditions. Please consult Autogard. 3) Weights and Inertias apply to maximum (S1) & (S2) bores and full set of springs. Dimensional Details (in) Model/Size Max. Bore S1 Max. Bore S2 A D E G J K L M R T1 T2 X (4) (4) T26N/80 T66N/110 T206N/140 T406N/200 T806N/200 0.8125 1.250 3.94 2.62 2.16 0.12 0.53 0.00 3.58 3.15 3.15 2.25 1.18 0.06 1.250 2.000 5.25 3.63 3.09 0.12 0.66 0.24 5.34 3.39 4.33 3.50 1.42 0.09 1.9375 2.375 7.00 5.38 4.64 0.12 1.00 0.83 7.31 3.94 5.51 4.31 2.17 0.11 2.500 3.750 10.75 8.00 6.34 0.16 1.44 1.30 10.26 5.50 7.87 6.19 3.15 0.16 2.500 3.750 10.75 8.00 6.34 0.16 1.44 1.30 10.26 5.50 7.87 6.19 3.15 0.16 4) Rectangular keys must be used for maximum bore diameters. 9 AUTOGARD T - SERIES TORQUE LIMITER Drive Shutdown on Disengagement Switching off the drive upon disengagement will prevent unnecessary wear which could shorten the working life of the Autogard torque limiter. The operation of the limit switch is effected by the movement of the cover on disengagement. A flat switch plate is attached to the cover as is shown. Torque Limiters - T0 / TC / T4 / T5 / T6N / T6S Size X A (in) (in) T2 0.06 3.94 T6 0.09 5.25 T20 0.11 7.00 T40 0.16 10.75 T80 0.16 10.75 Torque Limiter - T0E (Economy version) Size X A (in) (in) T2 0.06 3.00 T6 0.09 4.00 T20 0.11 5.62 T40 0.16 8.00 T80 0.16 8.00 Torque Adjustment The Autogard torque limiter can be supplied with the torque preset at the factory. However, in many cases the exact torque requirements are difficult to calculate with any reasonable degree of accuracy. Therefore the recommended installation procedure is to start the drive with a low torque setting and progressively tighten the adjustment nut until the torque limiter starts the mechanism without disengaging. Before attempting to turn the adjustment nut, ensure that the locking screw is loosened and is relocked after final adjustment. Spring Selection T-20 Torque Range - in.lbs T-60 Torque Range - in.lbs T-200 Torque Range - in.lbs No. of Springs Min Max No. of Springs Min Max No. of Springs Min Max T-400 Torque Range - in.lbs No. of Springs Min Max T-800 Torque Range - in.lbs No. of Springs Min Max 3 Springs 60 130 4 Springs 180 450 4 Springs 480 1,200 4 Springs 1,600 4,000 8 Springs 4,800 9,600 6 Springs 120 260 6 Springs 240 600 6 Springs 720 1,800 6 Springs 3,000 6,000 10 Springs 6,000 12,000 9 Springs 200 400 8 Springs 320 750 8 Springs 960 2,400 10 Springs 400 900 10 Springs 1,200 3,000 Protective Finish Maintenance The standard phosphate and oil finish provides a high level of corrosion resistance. Units can be supplied with a suitable alternative finish for special machinery requirements, or for adverse environmental conditions. The Autogard torque limiter uses journal and needle thrust bearings. The latter is packed with grease on assembly as are the driving balls. Under reasonably clean conditions the unit will operate with a minimum of maintenance, a grease nipple is provided in the cover for re-lubrication. The frequency of maintenance is dependent on many operating factors, but in adverse conditions please consult Autogard. Please contact Autogard to discuss special requirements. General Safety The Autogard Torque Limiter is a reliable unit, built to high standards of workmanship. Similar to all mechanical devices, each application must be considered on its own merits with reference to safety (i.e. lifting equipment, explosive conditions, etc.). As a rotating component, adequate guarding must be provided, in accordance with local codes. Autogard staff are always available to discuss particular applications. 10 OTHER AUTOGARD PRODUCTS Autoflex Couplings Autogard Series 320 Torque Limiters Samiflex Elastic Couplings Autogard Series 200 Torque Limiters Autogard Series 400 Torque Limiters Autogard Series 800 Torque Limiters American Autogard Corporation 5173 26th Avenue Rockford, Illinois 61109 Tel + 1 815 229 3190 Fax + 1 815 229 4615 email [email protected] www.autogard.com British Autogard Limited 2 Wilkinson Rd. Cirencester Glos GL7 1YT United Kingdom Tel +44 (0) 1285 640333 Fax +44 (0) 1285 659476 Autogard Power Monitors Monitorq - Torque Sensors Autogard Asia Pacific P/L Melbourne, Australia Tel + 613 9532 0901 Fax + 613 9532 1032 Autogard Kupplungen GmbH Barntrup, Germany Tel +49 5263 954 960 Fax +49 5263 954 969 Autogard Italy Milano, Italy Tel +39 02 92 1700 471 Fax +39 02 92 1700 472 Autogard South Africa (Pty) Ltd Johannesburg, South Africa Tel + 27 11 728 4868 Fax + 27 11 728 5254 TS09/05