Trio-Ply belts are constructed with three fabric plies. Trio-ply belts are available for tensile strengths, starting from 400 to 1900 N/mm. These belts are specifically resilient to impact and tear due to its thicker skin rubber construction.
If the drum diameter is suitable, 3 ply belts are recommended, following the minimum ply concept. These belts are available for all cover grades, including heat resistant, flame resistant, oil resistant, acid resistant and cold resistant.
| Belt Type | Min.Pulley Diameter A* | Min.Pulley Diameter B* | Min.Pulley Diameter C* | |
| EP 400/3 | 400 | 315 | 250 | |
| EP 500/3 | 500 | 400 | 315 | |
| EP 630/3 | 630 | 500 | 400 | |
| EP 800/3 | 800 | 630 | 500 | |
| EP 1000/3 | 800 | 630 | 500 | |
| EP 1250/3 | 1000 | 800 | 630 | |
| A: Drive Pulley | B: Tail Pulley | C: Snub Pulley |
