Heavy duty casters are loaders with relatively large load capacity. Is based on the caster's load-bearing capacity of the decision, relatively light casters, medium casters and other classification, and there is no clear boundaries. Generally from the load of 100 kg to 15t or even higher load casters called medium casters.

Heavy duty casters in English is Heavy duty caster or heavy duty cast, load particularly heavy casters English name is Extra heavy duty casters or Extra heavy duty casts.

Heavy duty casters are usually metal-based stent. Including ordinary steel stamping molding, cast steel molding, die forging steel molding, etc., usually flat-based assembly. Heavy-duty casters steel plate thickness generally used 6mm, 8mm, 10mm, 16mm and 20mm above the steel plate. At present, Wanda for the Chinese oil system design of 12 tons of heavy duty casters with 30mm thick steel plate, effectively ensuring the safety of the loaded products.

Heavy duty caster is usually double-layer steel ball running stamping heat treatment. Extra heavy-duty caster rotary version of the general use of greater force of the plane ball bearings or plain needle bearing matching cone bearings, effectively enhance the heavy duty casters load capacity. Special heavy duty wheel of the rotating plate with die forging steel forming, effectively avoiding the connection plate bolts welding.

Heavy duty casters are used for the movement of heavy duty wheels, so the wheels of heavy duty casters generally use hard table single wheels. Such as nylon wheels, cast iron wheels, forged steel wheels, hard rubber wheels, polyurethane wheels, and phenolic resin wheels, these are the ideal choice. Among them, forged steel wheels and polyurethane casters wheels are particularly suitable for heavy duty casters supporting wheels.

The choice of diameter for heavy duty casters is based on the greater the diameter of the wheels. The more common the specifications are 4 inch, 5 inch, 6 inch, 8 inch, 10 inch, 12 inch casters. Heavy duty can be used 16-inch and 18-inch wheels. You can also customize special specifications for heavy duty wheels, such as low center of gravity heavy wheels with a minimum of 2 inches.