Technical Information

Caster Selection

After careful evaluation, Blickman has selected the best casters for its equipment to meet the special needs of health care institutions worldwide.

Key considerations when selecting casters:

1. Load Weight and Wheel Size―Generally, the greater the load weight, the larger the caster. The right size caster will also allow equipment to roll more easily. By determining the maximum load and dividing it over the number of casters, you can determine the weight that each caster must support. Tables and stands that travel only short distances will operate efficiently with a 2" or 3" medium-duty caster with a weight load of 75 lbs. per caster. Blickman also utilizes 5" medium and 6" heavy duty casters with weight loads of 250-500 lbs. per caster for larger material handling and case carts. These will provide a smoother and quieter ride.

2. Wheel Bearings―For the majority of equipment, we have selected ball bearings for maximum rollability for loads up to 1200 lbs. However, Celcon^® bearings are used in case carts and other applications where water and other liquids are present as well as varying temperature conditions. These bearings are made of Celanese^® plastic and are highly durable, corrosion resistant and require minimum lubrication.

3. Operating Environment―We utilize rubber wheels on most of our equipment unless in the presence of corrosive materials or chemicals where polyurethane may be recommended. Thermoplastic rubber wheels protect the floors from scuffing and the softer wheel provides a quieter ride. However, the polyurethane wheel has a greater load capacity and moderate floor protection. We utilize heavy-duty casters in most of our hand-pushed, material-handling equipment; however, in many applications a medium- or light-medium-duty caster is appropriate.

4. Special Conditions―We recommend nickel-plated casters with Celcon^® bearings and stainless-steel hardware for increased longevity. For very frequent washings or wet environments, stainless-steel casters are recommended. Grease seals should be provided to keep lubricant in, and dirt out, of the casters. Case carts, instrument carts and supply carts often utilize swivel locks to convert swivel casters to rigidity for easier steering; wheel brakes may be required to lock a wheel in place.

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