Heavy duty castor is used for heavy equipment moving, so the heavy duty castor wheels generally USES hard single wheel tread. Such as polyurethane wheel, PVC wheel, rubber wheel, nylon wheel, cast iron wheel, forged steel wheel, wheel and phenolic resin and nylon wheel + glass fiber is the ideal choice. Including pu castor wheels especially for track, castor wheels. For heavy duty caster stents is usually adopts metal material as the main body, including ordinary steel plate stamping molding, casting molding, die forging steel molding, usually is given priority to with flat plate assembly. Heavy steel plate thickness of castor generally adopt 5 mm, 8 mm, 10 mm, 16 mm and more than 20 mm steel plate. Heavy universal wheel rotating plate design of heavy duty castor wheels usually adopts the double ball track, stamping forming, heat treatment. For track, universal wheel rotating plate generally adopt force bigger plane ball bearing or needle roller bearing can effectively enhance the load capacity of heavy duty castor. For special shock heavy universal wheel, rotating plate using die forging steel, molding, effectively avoid the bolt connection plate welding, a greater intensity of improve the shock resistance of castor. Zhongshan big into castor co. , LTD. Is located in the beautiful coastal city - Zhongshan, located in convenient transportation of the jiqing highway Toll Gate, north of shenyang viaduct, cieme big letter industrial park, now covers an area of 60 mu, enterprise planning area of 30000 square meters modern workshop, 8000 square meters of office and apartment dormitory building, the company employees nearly 200 people. A wholly owned subsidiary company was founded in 2016 in zhongshan hui hao castor co. , LTD. , focusing on all kinds of buffer casters, heavy-duty casters, mute casters, industrial casters, level adjustment, rail wheel, foam and other high-end development and production of castor. This paper label: heavy duty castor polyurethane wheel on a nylon wheel, explain a proper noun: castor industry trundle brake function