1. Detect the visual wear of the tread surface. Tire surface "grinding point" can suggest the accumulation of foreign matter, such as wire and other wire may be wrapped around the wheel, remove the wheels of the bolts and nuts, clean up debris. Check the wheel bearing is damaged, if the parts are not damaged can be re-assembled to continue to use, if often encountered by the phenomenon of the wheel was wrapped around the proposed debris can be wrapped to avoid.
2. Swivel casters loose wheels or stuck also can cause "polished point." Proper maintenance checks, especially check the bolt tightness, the number of lubricants, replacement of damaged casters can enhance the rolling performance of the device and the rotation flexibility.
3. Rubber tires severely damaged or loose may cause rolling instability, leakage, load abnormalities, and damage to the floor, etc., timely replacement of damaged tires and bearings can be reduced due to caster damage caused by downtime caused by the cost of loss.
4. Check the repair wheel, to determine whether the bolt nut is tightened, as far as possible in all the bolts on the use of lock washer or locknut. If bolts are loose, tighten them immediately. If the wheel inside the bracket is loosened, it will cause the wheel to be damaged or unable to rotate.