Molded Back Groove PU timing belt
YONGHANG specialize in supplying one-piece molded, reverse-grooved PU timing belts, which solve the problem of bending and cracking in small-diameter pulleys. Featuring a core-preserving manufacturing process, these belts offer quiet operation and efficient heat dissipation, making them ideal for high-precision automated conveyor lines. YONGHANG offer customization based on your drawings and direct wholesale supply from the manufacturer.
- Introduction
Introduction
Key Technical Features:
Zero-Damage High-Strength Core: Molded construction eliminates the need for mechanical cutting, ensuring 100% protection against scratches to the internal steel or aramid core,thereby maintaining the belt’s maximum tensile strength.
No Stress Cracking: Smooth, rounded grooves eliminate sharp edges and micro-cracks left by machining, significantly reducingfatigue damage caused by repeated bending.
Ultimate Dimensional Accuracy: Groove depth and spacing are determined by precision molds, resulting in minimal full-length deviation and ensuring smooth contact between the belt and the idler pulley.
Core Product Features and Benefits:
1. Exceptional Flexibility (Anti-Bending)
The anti-bending groove design effectively reduces material compression on the back of the belt, making it easier to bend. This allows the belt to fit perfectly on small-diameter pulleys and demonstrates excellent fatigue resistance during frequent forward/reverse and start/stop operations. The ideal choice for high-performance industrial power transmission and precision positioning.
2. Quiet Operation and Pneumatic Venting (Noise Reduction)
The grooves act as ventilation channels. As the belt passes over the pulley, the grooves rapidly expel compressed air, eliminating the whistling noise caused by air bubble compression and significantly reducing operating noise at high speeds.
3. Enhanced Heat Dissipation and Aging Resistance
The reverse grooves increase the surface area on the back of the belt, functioning similarly to heat sinks. This helps dissipate heat rapidly during high-speed operation, preventing the polyurethane (PU) material from softening due to high temperatures or hardening from thermal aging.
4. Foreign Object Ejection and Self-Cleaning Function
In dusty or oily industrial environments, the grooves naturally carry away debris or oil residue, preventing the accumulation of foreign matter between the belt and the pulley, thereby effectively reducing slippage and wear.


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