Learn how to select the right caster and wheel for your application.

Swivel Caster
A Swivel Caster has a swivel yoke and wheel assembly that will allow rotation of 360 degrees, which permits movement in any direction.

Swivel Radius
A Swivel Radius is the horizontal distance from vertical centerline of kingpin to outside edge of wheel tread. Specifies minimum clearance required for mounted caster to swivel 360 degrees.

Rigid Caster
A Rigid Caster has a rigid yoke and wheel assembly which permits only straight-line movement.

Swivel Lead
Swivel Lead is the horizontal distance between vertical centerlines through kingpin and wheel center.

Overall Height
Overall Height is the vertical distance between floor and mounting plate. (NOTE: Casters with threaded stems are measured to the top washer and do not include the length of the threaded stem).

Wheel Diameter
Wheel Diameter is the outer nominal diameter of the wheel.

Tread Width
Tread Width is the outer surface of the wheel, in contact with the ground.

Hub Length
Hub Length is the widest part of the hub (including bearing assembly and thread guards).

Bore Diameter
Bore Diameter is the distance measured through the center of the wheel.

Plate Dimension
Plate Dimension is the measured distance from one edge of the top plate to the opposite side and the distance from the other edge of the top plate to the opposite side.

Bolt Hole
Bolt Hole spacing is the distance measured from the center of the bolt hole to the opposite center of the other bolt hole.