II / 98
C6 CATALOG
The heavier the load, the larger the wheel required for the
caster. The weight of the load also influences the mobility of the
wheel. The larger the wheel diameter the easier it rolls. Roller
bearings carry heavier loads. Ball bearings roll easier but carry
lesser loads. Roller or ball bearings are recommended for loads
over 400 pounds. When possible, use the largest ball bearing
wheel for the best results.
For Short travel in confined areas with hand-pushed
equipment: 3-4” diameter. For longer travel with hand-pushed
equipment: 5-6-8” diameter.
Precision Ball Bearings
— the various designs of single row
radial precision ball bearing to DIN are the highest quality type of
bearing. Wheels with these bearings have extremely low-
resistance for maximum loading.
Ball Bearings
are used where maximum rollability is required.
This type should be used for loads from 400 to 1200 pounds.
Because of the ball contact area, ball bearings are the least
frictional type available in caster wheels.
Roller Bearings
are used when greater load capabilities and
rollability are required. Hardened rollers revolving around a
hardened spanner bushing distribute the heavier load over a larger
area.
Delrin Bearings
are an impregnated Dupont plastic product
that performs efficiently in a wide temperature range. They are
durable, corrosion resistant, and require minimum lubrication even
in steam cleaning or where water or other liquids are present.
Precision Ball
Ball
Roller
Delrin/Sleeve/Plain
Each wheel material has certain characteristics, which will give
the best results where unusual conditions exist. For example,
where acids, oils, chemicals and other conditions harmful to rubber
are present, polyurethane, polyolefin, phenolic or steel wheels are
recommended.
In hospitals or other facilities where cart washings are required,
select nickel-plated casters with grease seals and zerk fittings. For
very frequent washings or wet environments, select stainless steel
casters.
See the TREAD MATERIAL CHART below as a guide for choosing
the proper tread material.
LOAD WEIGHT & WHEEL SIZE
WHEEL BEARINGS
FLOOR CONDITIONS
UNUSUAL & SPECIAL CONDITIONS
Urethane
Hard Rubber
Soft Rubber
Polyolefin
Carpeting F E NR E
Wood E NR F NR
Tile E NR F NR
Terrazzo E NR F NR
Linoleum E NR F NR
Concrete E E E E
E=Excellent F=Fair NR=Not Recommended
FLOORING
TREAD
HOW TO SELECT THE PROPER CASTER & WHEEL
Most Products Ship
Within 1-3 Business
Days!
QUICK SHIP
ALCO REPRESENTS THESE MANUFACTURERS