天轮衬块主要是防止天轮与钢丝绳直接接触时产生的摩擦，因此对保护钢丝绳起着非常重要的作用。钢丝绳在运行时会产生自转，如果摩擦系数过高，会妨碍钢丝绳的旋转，损伤钢丝绳和。对于这种情况，钢丝绳必须以尽可能小的阻力导入竖井，以减小扭矩和旋转应力。

我司专业生产各种型号不同材质的天轮衬块产品，主要材质有超高分子、改性PP、PVC、聚氨酯、尼龙等， 并可提供各种材质和尺寸的定制加工。

我司采用了粘均分子量在150万以上的线性结构材料（普通材料的分子量仅2～30万）制作而成的天轮、导向轮衬块，具有如下特性：

1.优异的耐磨性；

2.良好的抗冲击性能；

3.良好的自润滑性；

4.超高的拉伸强度；

5.良好的耐腐蚀性、耐水性；

6.良好的稳定性；7.良好的抗低温性能。

The hoist sheave lining is mainly used to avoid the friction when head sheave directly contact steel wire cases. So it plays vital role in protecting steel wire. The steel wire will rotate in operation. If the friction factor is much higher,it will disturb steel wire rotating and damages the steel wire. In this situation, The resistance of the wire rope must be as small as possible to import the shaft, to reduce the torque and rotation stress.

We specialize in designing each model and different materials head sheaves and the most materials are included Ultrahigh molecular, modified PP, PVC, pu, nylon, etc. And we also can supply OEM products with different models and materials.

Pulley, and guide wheel liner which are adopted by linear structure materials whose the sticky molecular weight is more than 1.5 million (the molecular weight of ordinary materials only twenty thousand to three hundred thousand has the following features:1、Excellent wear resistance; 2、Good impact resistance; 3、Good self-lubricant; 4、good self-lubricant; 5、good anticorrosion and water resistance; 6、good stability; 7、good resistance to low-temperature.