One of the following metal casting pulley (pulley) should be scrapped appears: ① cracks. ② uniform wear of wheel groove 3mm. ③ wheel wear groove wall thickness of up to 20% of its original thickness. ④ due to wear the wheel diameter of the groove bottom 50% reduction in capacity of wire rope diameter. ⑤ other damage rope defects. If several door pulley which is in use only a few doors wholesale multi-skating car, it should be commuted from the weight reduced accordingly, it can not be based upon the original starting weight to use. After winding through the pulley block used to wear, take a test hanging, detailed examination of the various parts is good multi-roller cars, friction between the presence or absence of Kasheng more skating car prices, friction or rope at each other, if inappropriate, After adjustment should be officially lifted. Lifting rope pulley or pulley block group must comply with the requirements. When selecting a rope pulley diameter exceeding the requirements will increase wheel slip wear, but also to rope wear and tear. From the weight of a certain block should be equipped with the appropriate thickness of the wire rope. Beijing multi-roller cars, more skating car manufacturers, Xinyu lifting (certified merchants) provided by the Qingyuan Xinyu Crane Limited. Qingyuan Xinyu Crane Limited (xyqz0312.1688.com) is specialized in "chain hoists, lever hoist, electric hoist, multi-functional electric hoist, indoor and outdoor lifting machine" of the enterprise, companies adhering to the "integrity management , the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhangsong Song.