V-belts in classic profiles (Z, A, B, C, D) and narrow profiles (SPZ, SPA, SPB, SPC) for power transmission between pulleys. Choose your profile, consult the length chart on its data sheet, and if you don't find your size, contact us.
The belt profile must match the pulley groove. This table summarizes the dimensions of each profile; click on its data sheet for the complete length table.
| Profile | Nominal section W x T (mm) | Ref. width Wd (mm) | Linear mass (g/m) | Minimum winding diameter (mm) | Le - Ld (mm) |
|---|---|---|---|---|---|
| Z-belt | 10 x 6 | 8.50 | 64 | 63 | 15 |
| V-belt A | 13 x 8 | 11 | 108 | 71 | 16 |
| V-belt B | 17 x 11 | 14 | 188 | 112 | 22 |
| C-belt | 22 x 14 | 19 | 310 | 170 | 34 |
| D-belt | 32 x 19 | 27 | 590 | 300 | 51 |
| SPZ V-belt | 9.7 x 8 | 8.50 | 68 | 71 | 13 |
| SPA V-belt | 12.7 x 10 | 11 | 120 | 90 | 18 |
| SPB V-belt | 16.3 x 13 | 14 | 194 | 140 | 22 |
| SPC V-belt | 22 x 18 | 19 | 375 | 200 | 30 |
Le = outside length; Ld = primitive reference length.
The classic sizes are Z, A, B, C, and D; the narrow sizes are SPZ, SPA, SPB, and SPC. They have different cross-sections (for example, the A measures 13 x 8 mm and the SPA 12.7 x 10 mm), so they are not interchangeable. The narrow sizes are designed to transmit more power within a similar size.
In standard profiles (Z, A, B, C, D), the number corresponds approximately to the inside length in inches. For example, an A 50 has an inside length of 1,270 mm and a pitch length of 1,306 mm. In narrow profiles (SPZ, SPA, SPB, SPC), the number corresponds to the pitch length in millimeters: an SPA 1250 has a pitch length of 1,250 mm.
The original length (Ld) is the reference length of the belt, measured around the measuring circumference. The inner length (Li) is the length of the inner side of the belt.
Contact us at disumtec.com indicating the profile and length you need and we will tell you if we can supply it.
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