該產品主要由蝸輪或者鏈條、軸、軸承和機箱等所組成,鏈條的性能穩定,質量可靠。而蝸輪或者鏈條、軸、軸承都由機箱來支承。The product is mainly made of worm gear or chain, shaft, bearing and chassis, etc., The performance of the chain is stable, the quality is reliable,while the worm gear or chain, shaft, bearings are supported by the chassis.