RWM

RWM casters are available with several wheel materials, including polyurethane, phenolic, rubber, steel, and nylon. Polyurethane wheels are common in medium-duty to heavy-duty applications and are often blue or black. Phenolic wheels are typically black and used for heavy-duty loads. Rubber wheels are used for general-purpose maintenance-free casters, while steel wheels are found in medium-duty kingpinless models. Nylon wheels are used in smaller-diameter inverted-mount casters. Each material offers different properties in terms of load capacity, floor protection, and resistance to wear or chemicals.

Swivel RWM plate casters have a rotating top plate that allows the wheel to pivot 360 degrees, enabling easy directional changes. Rigid RWM plate casters have a fixed top plate, so the wheel only rolls forward and backward, providing straight-line stability. Swivel casters are typically used on the steering end of carts or equipment, while rigid casters are used on the opposite end for tracking. Both types are available in kingpinless designs for increased durability.

Kingpinless refers to a caster design that eliminates the traditional kingpin—a central bolt that can loosen or fail over time. Instead, RWM kingpinless casters use a raceway system with hardened steel balls or rollers that distribute load more evenly. This design reduces maintenance, increases load capacity, and extends service life, especially in heavy-duty applications. RWM offers kingpinless plate casters in both swivel and rigid configurations.

RWM casters use either roller bearings or ball bearings, depending on the model. Roller bearings are common in medium-duty to heavy-duty casters, providing smooth rolling under load. Ball bearings are used in some heavy-duty and inverted-mount casters for lower rolling resistance. The bearing type affects the caster's load capacity, rolling ease, and suitability for different floor surfaces. Specific models like the 65-SWE-0820-R-CRN75D use ball bearings, while others like the 65-UIR-0620-S-76ST use roller bearings.

RWM casters are primarily designed for indoor industrial use, as most models feature polyurethane, phenolic, or rubber wheels that perform best on smooth, dry surfaces. Some models with steel or nylon wheels may be used in outdoor or wet environments, but the brand does not specify weatherproofing or corrosion resistance ratings. For outdoor applications, buyers should consider wheel material and bearing seals, and consult with 3G Electric for specific recommendations.

Mounting height is the distance from the bottom of the wheel to the top of the mounting plate. RWM casters have mounting heights ranging from 3 25/32 inches to 12 1/2 inches, depending on wheel diameter and model. To select the correct height, measure the existing caster's mounting height or the clearance required for your equipment. Ensure the total height matches the original or desired height to maintain proper equipment level and load distribution. 3G Electric's catalog lists mounting heights for each SKU.