SJM Belting (Thailand) manufactures premium Heavy Duty Wedge V-Belts for high-power industrial and OEM applications. Compared with classical V-belts, wedge belts transmit more power while requiring less drive space, making them ideal for compact, high-performance power transmission systems.
Manufactured using high-strength tensile cords and premium rubber compounds, our belts provide excellent durability, efficiency, and long service life. Available in wrapped and raw edge cogged profiles including 3V/9N, 5V/15N, 8V/25N, SPZ, SPA, SPB, SPC, 3VX, 5VX, 8VX, XPZ, XPA, XPB, and XPC.
Narrow wedge belts are manufactured in accordance with RMA IP-22 and corresponding international standards where applicable.
For detailed dimensions and technical specifications, please refer to the table below.
| Dimensions | 3V/9N | 5V/15N | 8V/25N | SPZ | SPA | SPB | SPC | 3VX | 5VX | 8VX | XPZ | XPA | XPB | XPC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Width (mm) | 9.50 | 15.90 | 25.40 | 10.00 | 13.00 | 16.30 | 22.00 | 9.50 | 15.90 | 25.40 | 10.00 | 13.00 | 16.30 | 22.00 |
| Thickness (mm) | 8.0 | 13.5 | 23.0 | 8.0 | 10.0 | 13.0 | 18.0 | 8.0 | 13.5 | 23.0 | 8.0 | 10.0 | 13.0 | 18.0 |
| Angle (°) | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 38 | 38 | 38 | 38 | 38 | 38 | 38 |
| Length Designation | La | La | La | Lp | Lp | Lp | Lp | La | La | La | Lp | Lp | Lp | Lp |
| Max. Belt Speed (m/s) | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Bending Frequency f (Hz) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 120 | 120 | 120 | 120 | 120 | 120 | 120 |
| Min. Pulley Diameter (mm) | 63 | 140 | 315 | 63 | 90 | 140 | 235 | 56 | 112 | 280 | 50 | 63 | 100 | 160 |