Chapter 8 - Swivels
Transcription
Chapter 8 - Swivels
Swivels Applications Thrust bearing swivels are used to prevent wire rope or chain from transferring their normal twisting motion to the item being lifted. Green Pin® swivels are not designed to rotate under load, but are intended as positioning devices only. For rotation under load, thrust bearing swivels should be used. Our swivels can be supplied with two types of end fittings. Range Van Beest offers two types of swivels: • Green Pin® swivels, ranging from WLL 0.39 up to 20.5 tons, with eye-eye or jaw-eye terminals; • Thrust bearing swivels, ranging from WLL 1 up to 40 tons, with eye-eye terminals. Van Beest can also offer other types of swivels in grade 8 and grade 10. Please refer to the EXCEL® section in this catalogue for more information. Design Green Pin® swivels are drop forged. Thrust bearing swivels are machined from carbon steel. The range of thrust bearing swivels we supply are fitted with grease nipples to ensure long life and smooth operation. The greasing schedule must be adjusted to the frequency and intensity of use. Each swivel is generally marked with: - Working load limit n e.g. 2.4 t - manufacturer’s symbol n e.g. GP 5 - size in inch ne.g. /8” - traceability code n e.g. HA Finish Green Pin® eye-eye and jaw-eye swivels are hot dipped galvanized. Thrust bearing swivels are painted. Certification Specific details of certificate availability can be found on each product page. Please verify your certification requirements with Van Beest at time of order. 8 Instructions for use 9 Swivels should be inspected before use to ensure that: - all markings are legible; - a swivel with the correct WLL has been selected; - the bolt, nut or any other locking system cannot vibrate out of position; - swivels are free from nicks, gouges and cracks; - swivels may not be heat treated as this may affect their WLL. 10 11 12 The WLL should be applied in-line. Avoid overloads. Side loading is not allowed since the swivels are not designed for this purpose. 13 Never replace a swivel pin or nut with a pin other than the one designed for the purpose, as otherwise the swivel may not be suitable for the load imposed. 14 Swivels must be regularly inspected in accordance with the safety standards given in the country of use. This is required because the products in use may be affected by wear, misuse, overloading etc. which may lead to deformation and alteration of the material structure. Inspection should take place at least every six months and more frequently when the swivels are used in severe operating conditions. 15 16 17 18 19 20 120 Swivels Green Pin® swivels Eye - Eye • • • • Material Safety factor Standard Finish : high tensile steel, quenched and tempered : MBL equals 5 x WLL : US Federal Spec. RR-C-271, Type VII, Class 2 : hot dipped galvanized : 2.1 2.2 • Certification working load limit t G-7713 0.39 0.57 1.02 1.6 2.4 3.3 4.5 5.7 8.2 20.5 : diameter length outside width outside length inside width inside length inside length a mm b mm c mm d mm e mm f mm g mm 6 8 10 13 16 19 22 25 32 38 87 106 129 164 199 221 257 295 337 501 32 41 51 64 76 89 102 114 143 178 18 21 24 33 40 44 52 59 68 102 19 25 32 38 44 51 57 64 80 102 27 32 38 51 60 67 78 89 94 150 75 90 109 138 167 183 213 245 273 425 weight each kg 0.1 0.18 0.3 0.6 1 1.82 2.55 4.06 7.43 20.8 8 9 10 11 12 13 14 15 16 17 18 19 20 121 Swivels Green Pin® swivels Jaw - Eye • • • • Material Safety factor Standard Finish • Certification working load limit G-7723 8 9 10 11 12 13 14 15 16 17 18 19 20 122 t 0.39 0.57 1.02 1.6 2.4 3.3 4.5 5.7 8.2 20.5 : high tensile steel, quenched and tempered : MBL equals 5 x WLL : US Federal Spec. RR-C-271, Type VII, Class 3 : hot dipped galvanized : 2.1 2.2 : diameter length width outside length inside width inside length inside length width inside diameter pin weight each a mm b mm c mm d mm e mm f mm g mm h mm i mm kg 6 8 10 13 16 19 22 25 32 38 84 98 121 154 186 211 242 290 329 501 32 41 51 64 76 89 102 114 143 178 18 21 24 33 40 44 52 59 68 106 19 25 32 38 44 51 57 64 80 102 22 22 27 33 38 44 52 71 71 113 67 75 92 114 135 154 178 217 230 364 12 13 16 19 24 29 30 44 52 73 6 8 10 13 16 19 22 29 35 50 0.09 0.16 0.32 0.57 1.12 1.76 2.66 4.02 7.14 24.8 Swivels Green Pin® Thrust bearing swivels Eye - Eye • Material • Safety factor • Finish : carbon steel : MBL equals 5 x WLL : painted black • Certification : working load limit P-7740 : 2.1 2.2 MTC a length length thickness diameter diameter hole weight each t a mm b mm c mm d mm e mm kg 1 2 3 5 8 10 15 20 30 40 174 223 278 290 366 390 457 474 612 760 128 173 210 222 276 300 355 372 472 600 12.5 19 26 26 40 40 40 40 64 68 49 68 79 89 106 118 128 118 138 168 21 22 29 31 43 49 49 51 59 65 1.4 3.5 6.4 7.9 15.2 19.1 26.6 25 50 - 8 9 10 11 12 13 14 15 16 17 18 19 20 123