The minimum pulley diameter depends directly on the number of plies and the belt rating. For example, a 3-ply EP 315 belt typically requires a drive pulley diameter of at least 250mm to 315mm (depending on tension levels) to prevent ply separation and belt fatigue over dynamic bends. Our engineering team calculates this for each design.

Standard rubber compounds degrade when exposed to continuous temperatures above 80°C. For handling hot cement, clinker, sintered ore, or slag, we manufacture specialized Heat Resistant (HR / T1/T2/T3) covers designed to withstand continuous operating temperatures from 120°C up to 200°C, and transient peaks up to 250°C.

We highly recommend hot vulcanized splicing for heavy-duty installations, as it preserves up to 90-95% of the belt's original tensile rating. For rapid emergency repairs where downtime is critical, high-strength mechanical plate fasteners can be used, although they reduce the operational rating and are not suitable for small pulley diameters.

EP (Polyester warp / Nylon weft) fabric offers very low elongation under working load, high tensile strength, and excellent resistance to moisture and rotting. NN (Nylon warp & weft) fabric is highly elastic with superior impact absorption, making it excellent for high-shock impact zones, though it requires longer take-up stroke allowances.