Casters come in three weight ranges. Light duty casters are for loads of up to 500 lbs. Medium duty casters are for weights of between 501 and 2,000 lbs. And heavy duty casters are for weights of more than 2,000 lbs.
One of the primary considerations for choosing casters is the “load,” which refers to how much weight each caster will support. Calculating the load you need for each caster or wheel is simple: just divide the weight of the furniture, equipment, or cargo by the number of casters.
To determine the load capacity for each caster, divide the combined weight of the equipment and maximum load by the number of casters to be used. This is the load that each caster and wheel must support. Always select a caster and wheel that are rated for a capacity greater than the calculated load per caster.
Using 80 pounds, a four caster chair can hold a dynamic load of 320 pounds, but a five caster chair can hold a dynamic load of 400.
That's why shopping carts, for example, have fixed casters in back and swivel casters in front. The fixed casters at the back act as a fulcrum, making it easier to turn corners and also to move the cart in a straight line. California Caster carries rigid and swivel casters for any application.
Castor is a British term for caster wheel, whereas caster is an American term for caster wheel. A caster or castor is a pivoting roller attached to the bottom of furniture or a portable machine for easy movement. Casters are available in two different styles: swivel casters and fixed casters.
Soft casters are best for hard surfaces, like tiles, hardwood, and laminate. Meanwhile, hard casters suit softer floor surfaces. As such, for carpeted flooring, the best option to go with is hard tread casters. Hard casters require less force to roll and move around.
By increasing the offset and therefore reducing the swivel force, less exertion is required to swivel the caster out. With less force required to swivel the casters, workplace ergonomics is improved thereby reducing material handling injuries caused by pushing and pulling.
Generally, the greater the weight, the larger the wheel required for the caster. Larger wheels distribute weight and roll more easily over floor obstructions. To determine the load capacity for each caster, divide the combined weight of the equipment and maximum load by the number of casters to be used.
What are PU wheels? PU (Polyurethane) PU is a manufactured product designed around 50 years ago that mimic the rubber's grip and softness. It is harder than rubber but is superbly durable. The grip on smooth surfaces isn't excellent, but it works well on concrete and all-terrain surfaces.