ALCO Catalog C6

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HOW TO SELECT THE PROPER CASTER & WHEEL

LOAD WEIGHT & WHEEL SIZE

UNUSUAL & SPECIAL CONDITIONS

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. WHEEL BEARINGS

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.

FLOOR CONDITIONS

See the TREAD MATERIAL CHART below as a guide for choosing the proper tread material.

TREAD

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

Precision Ball

Ball

Roller

Delrin/Sleeve/Plain

ALCO REPRESENTS THESE MANUFACTURERS

C6 CATALOG

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