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V-Pulleys

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Category
  1. Aluminium V-Pulleys
  2. Cast Iron Pulleys
Manufacturer
  1. POWERDRIVE
  2. Douglas
Pulley Section
  1. APZ (10mm Belt)
  2. APA (13mm Belt)
  3. APB (17mm Belt)
  4. SPZ (10mm Belt)
  5. SPA (13mm Belt)
  6. SPB (17mm Belt)
  7. SPC (22mm Belt)
Pitch Diameter (mm)
  1. 40
  2. 43
  3. 50
  4. 51
  5. 52
  6. 56
  7. 57
  8. 58
  9. 60
  10. 63
  11. 67
  12. 70
  13. 71
  14. 75
  15. 80
  16. 85
  17. 90
  18. 95
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  33. 179
  34. 180
  35. 190
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  37. 212
  38. 220
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  40. 236
  41. 250
  42. 265
  43. 280
  44. 300
  45. 315
  46. 350
  47. 355
  48. 375
  49. 380
  50. 400
  51. 425
  52. 449
  53. 450
  54. 475
  55. 500
  56. 530
  57. 560
  58. 630
  59. 710
  60. 800
  61. 900
Outside Diameter (mm)
  1. 32
  2. 45
  3. 47
  4. 50
  5. 55
  6. 57
  7. 61
  8. 63
  9. 65
  10. 67
  11. 68
  12. 70
  13. 72
  14. 73
  15. 74
  16. 76
  17. 77
  18. 78
  19. 80
  20. 81
  21. 82
  22. 84
  23. 85
  24. 86
  25. 87
  26. 89
  27. 90
  28. 91
  29. 92
  30. 95
  31. 96
  32. 97
  33. 99
  34. 100
  35. 101
  36. 102
  37. 105
  38. 106
  39. 107
  40. 108
  41. 109
  42. 111
  43. 112
  44. 113
  45. 115
  46. 117
  47. 118
  48. 119
  49. 120
  50. 121
  51. 123
  52. 124
  53. 125
  54. 126
  55. 127
  56. 129
  57. 130
  58. 131
  59. 132
  60. 133
  61. 134
  62. 135
  63. 137
  64. 138
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  66. 140
  67. 141
  68. 145
  69. 146
  70. 147
  71. 148
  72. 149
  73. 155
  74. 156
  75. 157
  76. 158
  77. 159
  78. 165
  79. 166
  80. 167
  81. 168
  82. 169
  83. 176
  84. 177
  85. 178
  86. 185
  87. 186
  88. 187
  89. 188
  90. 189
  91. 196
  92. 197
  93. 198
  94. 205
  95. 206
  96. 207
  97. 208
  98. 209
  99. 210
  100. 218
  101. 220
  102. 222
  103. 227
  104. 229
  105. 230
  106. 231
  107. 232
  108. 233
  109. 234
  110. 242
  111. 244
  112. 246
  113. 255
  114. 256
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  116. 258
  117. 259
  118. 260
  119. 275
  120. 285
  121. 286
  122. 287
  123. 288
  124. 289
  125. 290
  126. 305
  127. 306
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  134. 325
  135. 357
  136. 359
  137. 360
  138. 361
  139. 363
  140. 365
  141. 385
  142. 389
  143. 405
  144. 406
  145. 407
  146. 408
  147. 410
  148. 435
  149. 455
  150. 456
  151. 457
  152. 458
  153. 459
  154. 460
  155. 485
  156. 505
  157. 506
  158. 508
  159. 510
  160. 540
  161. 566
  162. 568
  163. 570
  164. 635
  165. 636
  166. 638
  167. 640
  168. 702
  169. 718
  170. 720
  171. 806
  172. 808
  173. 810
  174. 906
Shaft Size (mm)
  1. 6
  2. 9
  3. 10
  4. 11
  5. 12
  6. 14
  7. 15
  8. 16
  9. 16.5
  10. 17
  11. 18
  12. 18.2
  13. 18.5
  14. 18.6
  15. 19
  16. 20
  17. 22
  18. 23
  19. 24
  20. 24.5
  21. 25
  22. 27
  23. 28
  24. 30
  25. 32
  26. 35
  27. 37
  28. 37.4
  29. 38
  30. 40
  31. 42
Shaft Size (Inch)
  1. 0.5
  2. 0.625
  3. 0.75
  4. 0.875
  5. 1
  6. 1.125
  7. 1.25
  8. 1.375
  9. 1.5
Number of Grooves
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 8
  8. 10
Pulley Fitting Type
  1. Taper Lock
Taper Lock Bush to Suit
  1. 1008
  2. 1108
  3. 1210
  4. 1610
  5. 1615
  6. 2012
  7. 2517
  8. 3020
  9. 3030
  10. 3525
  11. 3535
  12. 4030
  13. 4040
  14. 4535
  15. 4545
  16. 5040
  17. 5050
Material
  1. Cast Iron
  2. Aluminium
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What is a V-Belt Pulley?




A V-belt pulley, also known as a V-pulley or V-belt sheave, is a wheel-like component used in mechanical systems to transmit power between rotating shafts through a V-belt. The "V" in V-belt pulley refers to the V-shaped groove around the outer circumference of the pulley, which is designed to match the cross-sectional profile of the V-belt it works with.


Key Characteristics of a V-Belt Pulley:


V-Groove Design:

The defining feature of a V-belt pulley is its V-shaped groove(s), which provide a specific seating for the V-belt. The sides of this groove are angled to match the trapezoidal cross-section of the V-belt, ensuring a snug and efficient fit. The groove’s design ensures that as the belt tightens under load, it wedges deeper into the groove, increasing the friction between the belt and the pulley, which enhances the power transmission efficiency.

Material: V-belt pulleys are commonly made from materials like cast iron, steel, aluminum, or composite materials, depending on the application requirements. These materials provide the necessary strength, durability, and resistance to wear and environmental factors.

Power Transmission: V-belt pulleys are crucial components in systems where power needs to be transferred between two shafts that are not directly in line. They work by using a V-belt, which loops around the pulleys, to transmit rotational motion and torque from one pulley (driving pulley) to another (driven pulley).

Size and Configuration: V-belt pulleys come in a variety of sizes, with different diameters and numbers of grooves (to accommodate multiple belts). The size and configuration of the pulley determine the speed and torque characteristics of the power transmission system.


Applications: V-belt pulleys are used across a wide range of industries and applications, including automotive engines, industrial machinery, HVAC systems, agricultural equipment, and more. They are vital in situations where reliable, efficient, and quiet power transmission is required.


V-belt pulley sections:


V-belt pulleys are designed to accommodate specific types of V-belts, which come in various cross-sectional profiles. The sections of V-belt pulleys correspond to these profiles, ensuring a precise fit for efficient power transmission. The most common sections of V-belt pulleys are designed to match the following V-belt profiles:

A / SPA / APA Section: Designed for belts with a top width of 13mm

B / SPB / APB Section: Designed for belts with a top width of 17mm

C / SPC / APC Section: Designed for belts with a top width of 22mm

Z / SPZ / APZ Section: Designed for belts with a top width of 10mm


How a V-Belt Pulley Works:


Friction-Based Mechanism: The V-belt wraps around the grooves of the pulleys. When the driving pulley rotates, the belt transmits the motion to the driven pulley through frictional contact within the grooves. The V-shape of the belt and pulley groove increases the contact area between them, which enhances grip and reduces slippage, making the system efficient.

Adjusting Speed and Torque: The relative sizes of the driving and driven pulleys determine the speed and torque transmitted to the driven shaft. A smaller driving pulley and larger driven pulley will reduce speed but increase torque, and vice versa.


Advantages of V-Belt Pulleys:



High Efficiency: The design allows for efficient power transmission with minimal energy loss due to slippage, especially under high-torque conditions.

Versatility: V-belt pulleys are available in various sizes and configurations, making them suitable for a wide range of applications and compatible with different types of V-belts.

Durability: The materials used in V-belt pulleys are selected for their ability to withstand the rigors of industrial environments, including exposure to dust, chemicals, and varying temperatures.

Quiet Operation: V-belt systems tend to operate more quietly compared to some other power transmission methods, which is a benefit in noise-sensitive environments.


Common Applications of V-Belt Pulleys:


Automotive: Used in engine systems to drive accessories like alternators, water pumps, and air conditioning compressors.

Industrial Machinery: Found in conveyor systems, lathes, milling machines, and other equipment where reliable and smooth power transmission is necessary.

HVAC Systems: Employed in fan and blower systems to ensure consistent airflow and temperature control.

Agriculture: Used in tractors, harvesters, and other farm machinery to power various mechanical functions.

Home Appliances: Integrated into the design of washing machines, dryers, and other appliances where motors drive rotating components.


A V-belt pulley is a fundamental component in many mechanical systems, enabling efficient power transmission through the use of a V-belt. Its design, which features a V-shaped groove, ensures a strong grip on the belt, allowing for effective and reliable transfer of motion and torque between rotating shafts. V-belt pulleys are valued for their efficiency, versatility, and durability, making them indispensable in a wide range of industrial, automotive, and domestic applications.

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