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Poly-V Belts

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  1. H Section Poly-V Belts (1.6mm Pitch)
  2. J Section Poly-V Belts (2.34mm Pitch)
  3. K Section Poly-V Belts (3.56mm Pitch)
  4. L Section Poly-V Belts (4.7mm Pitch)
  5. M Section Poly-V Belts (9.4mm Pitch)
Rib Pitch (mm)
  1. 3.56
  2. 1.6
  3. 2.34
  4. 4.7
Number of Ribs
  1. 3
  2. 4
  3. 5
  4. 6
  5. 7
  6. 8
  7. 9
  8. 10
  9. 11
  10. 12
  11. 13
  12. 14
  13. 15
  14. 16
  15. 17
  16. 18
  17. 19
  18. 20
  19. 21
  20. 22
  21. 23
  22. 24
  23. 25
  24. 26
  25. 27
  26. 28
  27. 29
  28. 30
Effective Length (mm)
  1. 1016
  2. 1031
  3. 1036
  4. 1041
  5. 1051
  6. 1054
  7. 1059
  8. 1067
  9. 1089
  10. 1092
  11. 1105
  12. 1108
  13. 1116
  14. 1118
  15. 1123
  16. 1126
  17. 1136
  18. 1143
  19. 1150
  20. 1160
  21. 1168
  22. 1170
  23. 1184
  24. 1190
  25. 1203
  26. 1210
  27. 1214
  28. 1219
  29. 1232
  30. 1233
  31. 1236
  32. 1243
  33. 1244
  34. 1254
  35. 1257
  36. 1260
  37. 1262
  38. 1283
  39. 1285
  40. 1287
  41. 1301
  42. 1302
  43. 1309
  44. 1315
  45. 1316
  46. 1318
  47. 1321
  48. 1326
  49. 1333
  50. 1334
  51. 1355
  52. 1358
  53. 1365
  54. 1371
  55. 1372
  56. 1422
  57. 1428
  58. 1439
  59. 1461
  60. 1462
  61. 1473
  62. 1499
  63. 1524
  64. 1562
  65. 1578
  66. 1613
  67. 1651
  68. 1663
  69. 1702
  70. 1715
  71. 1727
  72. 1752
  73. 1753
  74. 1764
  75. 1778
  76. 1780
  77. 1803
  78. 1841
  79. 1842
  80. 1860
  81. 1874
  82. 1892
  83. 1894
  84. 1895
  85. 1904
  86. 1910
  87. 1938
  88. 1943
  89. 1945
  90. 1956
  91. 1960
  92. 1965
  93. 197
  94. 1970
  95. 1975
  96. 1978
  97. 1981
  98. 1985
  99. 1992
  100. 2019
  101. 2055
  102. 2064
  103. 207
  104. 2083
  105. 2096
  106. 2108
  107. 2134
  108. 2155
  109. 2197
  110. 2210
  111. 2235
  112. 2286
  113. 2324
  114. 2337
  115. 234
  116. 2362
  117. 2413
  118. 2476
  119. 2477
  120. 2489
  121. 2500
  122. 254
  123. 2565
  124. 267
  125. 2705
  126. 274
  127. 2743
  128. 280
  129. 2845
  130. 286
  131. 2870
  132. 288
  133. 2890
  134. 2895
  135. 2921
  136. 2997
  137. 300
  138. 305
  139. 307
  140. 3086
  141. 312
  142. 3154
  143. 317
  144. 3289
  145. 330
  146. 3327
  147. 336
  148. 345
  149. 3492
  150. 350
  151. 356
  152. 362
  153. 3630
  154. 369
  155. 3696
  156. 373
  157. 376
  158. 381
  159. 3890
  160. 400
  161. 4000
  162. 4051
  163. 406
  164. 414
  165. 4191
  166. 420
  167. 428
  168. 4318
  169. 432
  170. 4470
  171. 457
  172. 4622
  173. 470
  174. 475
  175. 483
  176. 490
  177. 495
  178. 5029
  179. 508
  180. 525
  181. 526
  182. 533
  183. 5385
  184. 570
  185. 584
  186. 599
  187. 605
  188. 6096
  189. 610
  190. 635
  191. 640
  192. 650
  193. 6500
  194. 685
  195. 686
  196. 7055
  197. 711
  198. 715
  199. 723
  200. 724
  201. 726
  202. 737
  203. 746
  204. 762
  205. 769
  206. 787
  207. 801
  208. 836
  209. 838
  210. 864
  211. 889
  212. 895
  213. 914
  214. 944
  215. 955
  216. 965
  217. 991
  218. 996
  219. 559
  220. 560
  221. 575
  222. 582
  223. 597
  224. 630
  225. 633
  226. 648
  227. 655
  228. 660
  229. 673
  230. 678
  231. 682
  232. 698
  233. 700
  234. 710
  235. 725
  236. 730
  237. 732
  238. 740
  239. 745
  240. 751
  241. 755
  242. 765
  243. 770
  244. 775
  245. 780
  246. 790
  247. 800
  248. 805
  249. 810
  250. 813
  251. 815
  252. 818
  253. 825
  254. 830
  255. 841
  256. 845
  257. 860
  258. 865
  259. 869
  260. 870
  261. 875
  262. 880
  263. 884
  264. 888
  265. 890
  266. 900
  267. 903
  268. 913
  269. 915
  270. 920
  271. 923
  272. 925
  273. 926
  274. 928
  275. 938
  276. 940
  277. 950
  278. 954
  279. 960
  280. 963
  281. 970
  282. 975
  283. 986
  284. 990
  285. 995
  286. 1000
  287. 1010
  288. 1015
  289. 1025
  290. 1030
  291. 1035
  292. 1038
  293. 1040
  294. 1050
  295. 1060
  296. 1065
  297. 1070
  298. 1075
  299. 1080
  300. 1084
  301. 1095
  302. 1100
  303. 1110
  304. 1113
  305. 1125
  306. 1130
  307. 1138
  308. 1140
  309. 1146
  310. 1149
  311. 1153
  312. 1165
  313. 1173
  314. 1185
  315. 1194
  316. 1200
  317. 1215
  318. 1220
  319. 1222
  320. 1230
  321. 1245
  322. 1250
  323. 1253
  324. 1255
  325. 1270
  326. 1272
  327. 1275
  328. 1280
  329. 1290
  330. 1295
  331. 1300
  332. 1310
  333. 1314
  334. 1325
  335. 1330
  336. 1335
  337. 1345
  338. 1350
  339. 1360
  340. 1370
  341. 1380
  342. 1385
  343. 1387
  344. 1390
  345. 1397
  346. 1400
  347. 1420
  348. 1425
  349. 1435
  350. 1440
  351. 1445
  352. 1453
  353. 1460
  354. 1465
  355. 1470
  356. 1475
  357. 1479
  358. 1480
  359. 1490
  360. 1496
  361. 1500
  362. 1510
  363. 1520
  364. 1525
  365. 1530
  366. 1540
  367. 1549
  368. 1550
  369. 1560
  370. 1570
  371. 1580
  372. 1582
  373. 1590
  374. 1600
  375. 1601
  376. 1610
  377. 1626
  378. 1630
  379. 1645
  380. 1650
  381. 1658
  382. 1664
  383. 1682
  384. 1700
  385. 1725
  386. 1730
  387. 1740
  388. 1750
  389. 1755
  390. 1760
  391. 1765
  392. 1775
  393. 1795
  394. 1800
  395. 1815
  396. 1830
  397. 1840
  398. 1843
  399. 1850
  400. 1854
  401. 1863
  402. 1865
  403. 1868
  404. 1875
  405. 1880
  406. 1885
  407. 1890
  408. 1900
  409. 1905
  410. 1915
  411. 1920
  412. 1930
  413. 1949
  414. 1963
  415. 1971
  416. 1980
  417. 2000
  418. 2020
  419. 2031
  420. 2050
  421. 2070
  422. 2080
  423. 2095
  424. 2100
  425. 2115
  426. 2120
  427. 2130
  428. 2135
  429. 2145
  430. 2164
  431. 2170
  432. 2200
  433. 2205
  434. 2217
  435. 2225
  436. 2236
  437. 2245
  438. 2250
  439. 2257
  440. 2270
  441. 2300
  442. 2315
  443. 2325
  444. 2330
  445. 2335
  446. 2340
  447. 2355
  448. 2385
  449. 2391
  450. 2400
  451. 2420
  452. 2438
  453. 2440
  454. 2460
  455. 2465
  456. 2475
  457. 2480
  458. 2515
  459. 2530
  460. 2540
  461. 2550
  462. 2560
  463. 2585
  464. 2605
  465. 2612
  466. 2620
  467. 2680
  468. 2710
  469. 2750
  470. 2835
  471. 2967
  472. 3000
  473. 3124
  474. 3500
  475. 3750
  476. 4122
Number Of Belt Ribs
  1. 10 Ribs
  2. 11 Ribs
  3. 12 Ribs
  4. 13 Ribs
  5. 14 Ribs
  6. 15 Ribs
  7. 16 Ribs
  8. 18 Ribs
  9. 20 Ribs
  10. 22 Ribs
  11. 24 Ribs
  12. 6 Ribs
  13. 7 Ribs
  14. 8 Ribs
  15. 9 Ribs
Manufacturer
  1. PIX
  2. Premium
Poly V-Belt Length
  1. 954mm (37.6")
  2. 991mm (39.0")
  3. 1075mm (42.3")
  4. 1194mm (47.0")
  5. 1219mm (48.0")
  6. 1270mm (50.0")
  7. 1295mm (51.0")
  8. 1333mm (52.5")
  9. 1371mm (54.0")
  10. 1397mm (55.0")
  11. 1422mm (56.0")
  12. 1480mm (58.3")
  13. 1562mm (61.5")
  14. 1613mm (63.5")
  15. 1664mm (65.5")
  16. 1715mm (67.5")
  17. 1764mm (69.4")
  18. 1803mm (71.0")
  19. 1841mm (72.5")
  20. 1943mm (76.5")
  21. 1981mm (78.0")
  22. 2020mm (79.5")
  23. 2055mm (80.9")
  24. 2070mm (81.5")
  25. 2096mm (82.5")
  26. 2134mm (84.0")
  27. 2197mm (86.5")
  28. 2235mm (88.0")
  29. 2286mm (90.0")
  30. 2324mm (91.5")
  31. 2362mm (93.0")
  32. 2388mm (94.0")
  33. 2477mm (97.5")
  34. 2515mm (99.0")
  35. 2693mm (106.0")
  36. 2705mm (106.5")
  37. 2743mm (108.0")
  38. 2832mm (111.5")
  39. 2845mm (112.0")
  40. 2895mm (114.0")
  41. 2921mm (115.0")
  42. 2997mm (118.0")
  43. 3010mm (118.5")
  44. 3086mm (121.5")
  45. 3124mm (123.0")
  46. 3289mm (129.5")
  47. 3327mm (131.0")
  48. 3492mm (137.5")
  49. 3531mm (139.0")
  50. 3630mm (142.9")
  51. 3696mm (145.5")
  52. 3734mm (147.0")
  53. 4051mm (159.5")
  54. 4089mm (161.0")
  55. 4191mm (165.0")
  56. 4318mm (170.0")
  57. 4470mm (176.0")
  58. 4622mm (182.0")
  59. 4648mm (183.0")
  60. 5029mm (198.0")
  61. 5385mm (212.0")
  62. 5410mm (213.0")
  63. 6096mm (240.0")
  64. 6121mm (241.0")
  65. 6500mm (255.9")
  66. 6502mm (256.0")
  67. 6883mm (271.0")
  68. 7055mm (277.8")
  69. 7646mm (301.0")
  70. 8408mm (331.0")
  71. 9169mm (361.0")
  72. 9931mm (391.0")
  73. 10693mm (421.0")
  74. 12217mm (481.0")
  75. 13741mm (541.0")
  76. 15266mm (601.0")
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Poly-V Belts (Ribbed Belts)

Poly-V belts, also known as multi-rib belts or serpentine belts, are highly efficient power transmission belts with multiple longitudinal ribs. These belts provide enhanced flexibility, improved grip, and reduced slippage, making them ideal for various industrial, automotive, and mechanical applications.


Structure of a Poly-V Belt

1. Top Fabric (Overcord)

  • A protective fabric layer made from rubber-impregnated material.
  • Provides resistance to wear, oil, and heat.
  • Shields the internal components from environmental and mechanical stress.

2. Tension Member (Cord Section)

  • Made from high-strength materials such as polyester, aramid (Kevlar), or fiberglass.
  • Ensures high tensile strength and prevents elongation.
  • Maintains belt stability under load conditions.

3. Compression Section

  • Located beneath the tension member and made of specially formulated rubber.
  • Supports the ribs and helps distribute the load evenly.
  • Absorbs shocks and reduces vibrations.

4. Ribbed Section (Working Surface)

  • Consists of multiple longitudinal ribs that engage with pulley grooves.
  • Typically made of rubber or synthetic materials reinforced with fiber.
  • Provides efficient torque transfer with minimal slip.

5. Rubber Base Layer (Cushion)

  • A bonding layer that secures the ribs to the tension member.
  • Enhances belt flexibility and longevity.
  • Helps dampen vibrations for quieter operation.

Poly-V Belt Sections (H, J, K, L, and M Sections)

Section Rib Pitch (mm) Rib Pitch (inches) Typical Applications
H 1.6 mm 0.063 in Compact drives, office equipment, medical devices, small appliances
J 2.34 mm 0.092 in Power tools, industrial equipment, household appliances
K 3.56 mm 0.140 in Automotive applications (serpentine belts), high-speed machinery
L 4.70 mm 0.185 in Heavy industrial applications, HVAC, large fans, conveyor systems
M 9.40 mm 0.370 in Extremely high-power applications, large machinery, heavy-duty power transmission

Advantages of Poly-V Belts

  • High Efficiency: Increased contact area with pulleys reduces energy losses.
  • Compact Design: Smaller pulleys can be used for the same power transmission.
  • Smooth Power Transfer: Evenly distributes loads, reducing wear on pulleys and bearings.
  • Reduced Noise & Vibration: Flexible design minimizes operational noise.
  • Extended Lifespan: High-strength materials resist heat, oil, and wear.
  • High Load-Carrying Capacity: Suitable for a wide range of applications, from small appliances to heavy machinery.

Poly-V belts are an essential component in power transmission, offering superior efficiency, compactness, and durability. The classification into H, J, K, L, and M sections allows for precise selection based on power requirements and application type. Whether in automotive, industrial, or household applications, Poly-V belts provide reliable performance and extended service life.

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