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How To Select The Right Casters

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How to select the right casters

Selecting the correct caster for your application is very important. lf you do not select the correct caster, you or the users of your equipment could be injured. if you are not absolutely certain which caster is the correct one for your use, contact a safety or engineering consultant who knows your equipment and its intended use to assist you.

Casters and wheels are offered in a wide variety of sizes and types. Although there is no simple formula to follow in choosing the proper caster or wheel, the information shown below is intended as a guide to assist you in specifying.operating and maintaining casters for safety and maximum life.Please read this information carefully.

Load capacity and wheel size

The first consideration for caster selection is to determine the combined weight of the equipment and maximum load on this equipment. Generally, the greater the weight, the larger the wheel required for the caster. Larger wheels distribute weight and roll more easily over floor obstructions.

To determine the load capacity for each caster, divide the combined weight of the equipment and maximum load by the number of casters to be used. This is the load that each caster and wheel must support. Always select a caster and wheel that are rated for a capacity greater than the calculated load per caster.This allows for unusual conditions that could change the performance of the caster. All Monroe capacity ratings shown in this catalog are rated at their maximum dynamic or rolling load.

Wheel Choice

As a general rule, hard tread wheels perform better on soft or smooth floors and soft tread wheels roll better on hard or rough floors including outdoor surfaces.

When choosing a wheel type, take into consideration all special floor conditions - tracks, gutters, grates, sills, elevator thresholds, seams and dock plates. The larger and softer the wheel the greater the ability to roll over rails and similar obstacles.

To protect floors from damage, choose softer cushion tread wheels. Solid Cushion Rubber, Advantage TM TPR (thermoplastic rubber), High Modulus Rubber and-Pneumatic Rubber wheels will provide quiet operation and maximum floor protection.

Steel and Cast lron wheels are not recommended for floor protection, but they are well suited for industrial applications. Polyurethane wheels, Welded Disc Polyurethane and Moldon Polyurethane wheels are frequently an effective compromise giving moderate floor protection with greater load capacity.

Unusual/Special Operating Conditions

Often unusual operating conditions require selection of casters and wheels with special features.Listed below are several guidelines for selecting casters for special conditions:

Extreme temperatures require special bearing lubricants or plain bore bearings

ü Never use rubber tread wheels in corrosive environments

ü In hospitals, bakeries and food processing plants where cart washings are required, select nickel-plated casters with raceway grease seals and zerk grease fittings.

ü For very frequent wash down applications or wet environments, specify Monroe stainless steel casters.

ü In textile plants and laundries, specify casters with thread guards to reduce the collection of thread, string and general floor debris.

ü For office machines such as copiers which require a low load height, choose Monroe business machine casters


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