Universal wheel, adjust the foot manufacturers according to the actual working conditions of universal wheel to choose the appropriate wheel material. Cargo handling is very frequent and heavy load, Each trundle bearing in 280 - only 420 kg is suitable for use with thick steel plate, 5 - 6 mm stamping hot forging and welding of double row ball wheel. If used for carrying heavy things such as textile factory, automobile factory, machinery factory and other places, according to use the site condition to choose dongguan castor plant and warehouse etc. Due to the long walking distance (in Dutch big factory Each trundle bearing in 350 - only 1200 kg is should choose to thick steel plate, 8 - After 12 mm cutting wheel frame, welding activities wheel rack flat ball bearing and ball bearing on the floor, make the castor can withstand the heavy loading, flexible rotation, impact resistance, etc. Wheels directly contact with the ground, is vulnerable to the ground and on the ground of various objects and surroundings in various corrosive medium and corrosion, if choose undeserved, can greatly shorten the service life of castor, work environment will influence the use of the wheel. Rough ground in use, shall be resistant to wear and resilient rubber, polyurethane or super synthetic rubber wheels; Special work under the high or low temperatures, or working environment temperature difference is very big, should choose metal dongguan castor wheels or special high temperature resistant; Required to prevent the accumulation of electrostatic generation, had better use special anti-static wheel, also can choose metal wheel ( If the ground does not require protection, ; Work environment there are many corrosive medium, should choose to have good corrosion resistance of the wheel accordingly.