JIS V-Pulley, B Type
Caution
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Product Description
A comprehensive lineup of V-belt pulleys compliant with JIS B 1854.
[Features]
· Integrated production from casting to machining and surface treatment
· A rich lineup. 650 sizes. A: 146 sizes, B: 218 sizes, C: 212 sizes, D: 74 sizes.
· In addition to the 281 sizes specified by the JIS standard, we have independently added 369 sizes. · Especially for the motor side, small diameter sizes are finely standardized.
· Pulleys of the highest quality, surpassing the JIS standard (JIS B 1854-1987 "General-purpose V-belt pulley") in material, processing accuracy, and balance accuracy.
[Applications]
· For blowers, etc.
JIS V-pulley Specification
Consistent production from casting to machining and surface treatment. Additionally, NC machinery, automatic machinery, balancers, etc. have been developed specifically for pulley machining. Cell production allows the production of many kinds of products in low volume, with short lead times. Delivering convenience to customers.
Convenient additional machining service has been standardized.
Shaft hole, keyway, and set screw machining are available in standardized form.
Extensive product range. 650 size.
A: 146 size, B: 218 size, C: 212 size, D: 74 size. The 369 size has been added into JIS standard 281 size separately. Fine standardization of small-diameter sizes used frequently in drive side mechanisms.
High quality exceeding JIS standards.
Top quality pulley with materials, machining and balance accuracy exceeding JIS standards (JIS B1854 - 1987 "General Use V Pulleys." Imbalance tolerance on the outer circumference is 0.1% of the pulley mass.
Surface treatment, for improving corrosion resistance is a coating with a beautiful finish.
V-pulley external appearance
Product standard Product standard conforms to JIS B1854-1987 "General Purpose V Pulleys."
| Groove Shape | Nominal Size dm | α ± 0.5 (°) | lo | w1 | k | ko | e*1 | f | ||
|---|---|---|---|---|---|---|---|---|---|---|
| A | 100 Or Less | 34 | 9.2 | 11.95 | 4.5 | +0.2 0 | 8.0 | 15.0 ±0.4 | 10.0 | ±1 |
| Over 100, And 125 Or Less | 36 | 12.12 | ||||||||
| Over 125 | 38 | 12.30 | ||||||||
| B | 160 Or Less | 34 | 12.5 | 15.86 | 5.5 | ＋0.2 0 | 9.5 | 19.0 ± 0.4 | 12.5 | ±1 |
| Over 160, And 200 Or Less | 36 | 16.07 | ||||||||
| Over 200 | 38 | 16.29 | ||||||||
| C | 250 Or Less | 34 | 16.9 | 21.18 | 7.0 | +0.3 0 | 12.0 | 25.5 ± 0.5 | 17.0 | ±1 |
| Over 250, And 315 Or Less | 36 | 21.45 | ||||||||
| Over 315 | 38 | 21.72 | ||||||||
| D | 450 Or Less | 36 | 24.6 | 30.77 | 9.5 | +0.4 0 | 15.5 | 37.0 ±0.5 | 24.0 | +2 -1 |
| Over 450 | 38 | 31.14 | ||||||||
Groove dimensions (units: mm)
*1: e cumulative error of 0.8 mm or less.
| Nominal Size dm | Outer Circumference Vibration Tolerance | Rim Side Vibration Tolerance | Diameter Tolerance |
|---|---|---|---|
| 118 Or Less | 0.15 (0.3) | 0.15(0.3) | ±0.4 (±0.6) |
| Between 125 And 160 | 0.15 (0.4) | 0.15(0.4) | ±0.6(±0.8) |
| Between 165 And 224 | 0.2 (0.4) | 0.2(0.4) | ±0.6(±0.8) |
| Between 236 And 300 | 0.25 (0.4) | 0.25(0.4) | ±0.6(±0.8) |
| Between 315 and 450 | 03 (0.6) | 0.3 (0.6) | ±0.9(±1.2) |
| Between 475 and 630 | 0.4(0.6) | 0.4(0.6) | ±0.9(±1.2) |
| Between 710 and 1,120 | 0.5 (0.8) | 0.5 (0.8) | ±1.2(±1.6) |
Outer circumference / rim side vibration tolerance value and outer diameter tolerance value (units: mm)
*Parentheses enclose corresponding JIS B1854-1987 values
Balance
Imbalance mass allowance on the outer circumference is 0.1% or 1 g of the pulley mass, whichever is larger. At a circumferential speed of 15 m/s, this corresponds to G16 of the JIS B 0905 "Rotating Machines - Balance Quality of Rigid Rotors."
Material and finish
JIS V-pulley: FC200 or higher coating, NBK blue (main body)