Pu castor is loose on the effects of the use of castor use road surface, the size of the obstacle, the use of ground residual material ( Such as iron, oil) , environment conditions ( Such as high temperature and normal temperature or low temperature) And the wheels can bearing the weight of the different conditions, such as to determine the choice suitable wheel material. For example: rubber wheel can't acid, oil and chemicals, super polyurethane wheel, high-strength polyurethane wheel, nylon wheel, steel and high temperature resistant chakras can apply to different special environment. Caster wheel bearing ability, also known as dynamic load in caster wheel dynamic load is different due to the test in a different way of the factory, material of the wheel will have different and different, the key is to support the structure and quality can impact and shock resistance. To: hard, narrow wheel than soft, wide wheels turn more easily. Rotate wheel radius is one of the important parameters, short turning radius increases to the difficulty, too much will cause the wheels wobble and shorten the life. Check after repair wheels, determine whether the bolt and nut tightening, as far as possible at all to use the locking bolt washer or locknut. If is loose, tighten the immediately. If the inside of the bracket with the loose wheel will be to the rotation of the wheels was damaged or not. Put grease on shaft seal ring and roller bearing friction within the site, can reduce friction and make more flexible rotation. Every six months on a normal lubrication, the car each month after cleaning for wheel lubrication, visual check wheel abrasion of the wheels. The wheel rotational impeded associated with fine red rope and so on sundry. The intertwining of anti-wind cover can stop these stuff. Castor too loose or too tight is also another factor, to replace the damaged/castor wheels to avoid the unstable rotation. Pu castor is loose on the effects of the use of more news and information about pu castor please click: hynews / 308. html