A caster is a device that goes through
the center of a wheel and then attaches to a piece of equipment. Even though it
is a device with a caster and a wheel, most refer to them as simply casters.
Casters allow heavy loads to be moved with relative ease and come in many
different types. Some examples are toolbox casters, furniture casters,
suitcase casters, and food service tray casters. Here are the different types
of casters and wheels.
Plate Mounted
Casters
These casters have a plate that attaches
to the container. They can be rigid and not move or they can swivel for ease of
operation. These can be used on loads of any weight and are suitable for heavy
loads. Uses include industrial equipment, conveyors, and tow lines.
Stem Mounted
Casters
Instead of a plate, these have a stem
that swivels to allow rotation and movement in any direction. Some of the stems
are round with threads and some are square. They are chosen for the lighter
weight loads and cannot support really heavy loads. Examples are office chairs,
mop buckets, and furniture.
Caster Wheels
Casters can have one or two wheels or
even more and some have balls instead of wheels. There are five main types of
caster wheels:
Metal Wheels -
Some caster wheels are made of metal which can be stainless
steel, forged steel, cast iron, or ductile iron.
Plastic Wheels -
These are easy to roll, resist chemicals and protect the
flooring.
Polyurethane
Wheels - These will last longer than rubber wheels. They are quiet when
rolling and protect the flooring.
Rubber Wheels -
Since they cushion well, these wheels work well on rough
surfaces. They are also quiet and protect the flooring.
Track Wheels -
These can be either V-grooved or flanged. They are good for heavy
loads, roll easily, and protect the flooring.
