The Basics
the maximum recommended load per caster or wheel based on intermittent operation over smooth floors at speeds not exceeding 3 m.p.h.
What is load capacity?
a surface in which bearing balls or rollers rotate
Do the bulk of the work with higher speeds.
What are bearings?
A measure of the hardness of resilient tread wheels
What is Durometer?
Also known as the swivel lead, this is the perpendicular distance between the vertical centerlines of the kingpin and the axle of a swivel caster. Larger offsets afford easier swiveling, shorter offsets greater strength.
What is the offset?
Handle radial loads, manual applications and are becoming less popular.
What are straight roller bearings?
a swivel or rigid caster assembly less wheel, that may or may not include axle, nut or spanner bushing
What is a rig?
the horizontal distance from the centerline of the caster kingpin to the outer edge of the wheel (a measure of clearance required to swivel a caster 360°).
What is the swivel radius?
What are precision ball bearings?
the vertical distance from the top of the caster mounting plate to the bottom of the wheel
What is the overall height of the caster?
the width of the wheel tread cross-section, measured at the base of the tread rather than at the point of floor contact.
What is the Face (tread width)?
Simplest bearing, no internal parts and performs well in corrosive environments
What are delrin bearings?
a surface in which bearing balls or rollers rotate
What is the raceway?
a loose term for classifying casters, based on the nominal diameter of the wheel.
What is the caster size?
These bearings are best for axial thrust, power applications and higher speeds.
What are tapered roller bearings?