Kingpinless Casters

A standard swivel caster uses a single kingpin bolt to attach the fork to the top plate. A kingpinless caster eliminates that bolt entirely. The swivel raceway is machined directly into the caster housing, and hardened ball bearings run in a continuous channel. This distributes load across the full raceway diameter instead of concentrating it on one bolt, dramatically increasing strength and service life.

Kingpin bolts fail because they bear the full rotational load at a single stress point. Over time, the bolt loosens from vibration and impacts, the threads strip, or the bolt bends under lateral force. In high-load applications, this failure can happen within months. Once the kingpin loosens, the caster develops play, wobbles, and eventually the fork separates from the plate -- a serious safety hazard.

Our kingpinless casters range from 1,000 lbs to over 40,000 lbs per caster. The Albion 75 Series starts at 1,500 lbs for 4-inch wheel models and reaches 5,000+ lbs for 10-inch and 12-inch wheel configurations. For extreme loads beyond that range, specialty kingpinless models are available on request.

At the swivel point, yes. Because there is no kingpin bolt to loosen or tighten, the swivel mechanism requires no periodic maintenance. The wheel bearings may still need occasional lubrication depending on the operating environment, and wheel treads will wear over time and eventually need replacement. But the most common maintenance task on traditional casters -- tightening or replacing the kingpin -- is eliminated completely.