We all know that any one large objects are composed of many small objects, if we put it to specialization, you will find more than you imagined. Castor is also a large object, it is composed of universal wheel and the directional wheel, the wheels have nylon wheels, PU wheels, rubber universal wheel, etc, and nylon universal wheel is composed of many small classification, if according to this rule, you will find castor turns out to be a very large objects, so here we detailed introduction of castor is what small classification. 1, castor is divided into civil casters, industrial casters according to the use, etc. ; According to the load is divided into light castor, medium casters, heavy-duty casters, track, and special castor castor, etc. ; According to the function is divided into universal casters, directional casters, screw casters, brake caster ( Double brake casters, scaffolding caster wheel) , shock absorption, casters, etc. ; According to the material can be divided into conductive castor, core casters, plastic castor, stainless steel castor, resistant to high temperature casters, polyurethane casters, nylon casters, rubber casters, full iron castor, etc. According to the bearing can be divided into bearing casters, rolling pins, etc. 2, industrial casters, industrial wheels, industrial rubber wheel, rubber wheel, PU wheel, etc. , such as light industry, heavy industry. 3, universal wheel: including nylon wheels, PU wheels, rubber wheels, etc. 4, nylon wheel: including PU nylon wheel, nylon wheel, nylon core forklift plastic nylon wheel, nylon casters, nylon gear, wheel, etc. 5, rubber wheel: industrial rubber wheel, wheel, nanjing, plywood, aluminum core tire rubber wheel, straight hole roller, inflatable wheels, industrial and mining, iron core of rubber wheel, plastic core roller, dome iron, flat iron, etc. 6, cast iron wheel: industrial total iron wheel, dome total iron wheel all round, round, flat iron, iron pulley, rail, door, etc. 7, polyurethane wheels, The PU wheel) PU: aluminum alloy wheel, skateboards PU wheel, PU wheel, actively core PU wheel, nylon PU wheels, PU wheels, PU plastic core forklift truck wheel, PU suspension castor, etc. Above are some of the castor I summarized the small classification, this is just a small part of; There are many classification need us to do, in your complete classification of small at the same time you will find that you there will be more profound understanding of castor, understand and will be more and more thoroughly. There are also many new products on the market at present, unknown castor has been appeared in the eye, now trundle product variety, at the same time also need innovation together.