Industrial Caster Selection Guide

How to Choose the Right Industrial Caster

1. Determine the Required Caster Load Capacity

Load capacity should be one of the first considerations when selecting industrial casters. Start by determining the total maximum loaded weight of the equipment, including the cart, rack, machine, or other equipment itself.

A basic caster capacity calculation is:

Total Loaded Weight ÷ Number of Casters = Required Capacity per Caster

For example, if a fully loaded cart weighs 1,200 pounds and uses four casters:

1,200 ÷ 4 = 300 pounds per caster

Each caster would therefore need to support at least 300 pounds.

Important: Load may not always be distributed evenly across every caster. Allow an appropriate safety margin for uneven floors, impacts, shifting loads, and your specific operating conditions when selecting caster capacity.

2. Choose the Right Caster Wheel Material

Caster wheel material affects rolling resistance, noise, floor protection, durability, load capacity, and performance in different environments. Common industrial caster wheel materials include:

Polyurethane Caster Wheels

Polyurethane is a versatile choice that offers good floor protection, durability, and load capacity. Polyurethane caster wheels are commonly used on concrete, tile, hardwood, and other industrial flooring.

Rubber Caster Wheels

Mold-on rubber provides quieter operation and good floor protection. Rubber caster wheels can be useful for carts and equipment where noise and vibration are concerns.

Phenolic Caster Wheels

Phenolic wheels are hard, durable wheels capable of supporting substantial loads while providing relatively easy rolling on suitable surfaces.

Polyolefin Caster Wheels

Polyolefin wheels are lightweight, durable, and resistant to many chemicals and moisture, making them useful for many general material handling applications.

Semi-Steel and Iron Caster Wheels

Semi-steel and iron wheels are designed for demanding applications where durability and load capacity may take priority over noise and floor protection.

Pneumatic Caster Wheels

Pneumatic wheels can be useful on rough or uneven surfaces because the tire helps absorb shock and vibration.

Stainless Steel Casters

Stainless steel casters are often selected for applications requiring corrosion resistance, washdown capability, or operation in demanding environments.

Thermoplastic Rubber Caster Wheels

Thermoplastic rubber combines floor protection and quieter rolling characteristics with the durability required for many commercial and industrial applications.

3. Consider the Floor Surface

The surface a caster travels over can be just as important as the weight it carries. Consider whether your casters will operate on:

• Concrete
• Asphalt
• Tile
• Hardwood
• Carpet
• Rough or uneven flooring

Also consider thresholds, expansion joints, debris, cracks, ramps, and other obstacles the wheels may encounter.

Hard Caster Wheels vs. Soft Caster Wheels

As a general rule, softer wheels can provide better floor protection and quieter operation, while harder wheels may provide easier rolling and higher load capacities. The best choice depends on the application, floor condition, and required capacity.

4. Select the Correct Caster Wheel Diameter

Wheel diameter has a significant effect on how easily equipment moves. Larger caster wheels generally roll more easily and can negotiate floor imperfections, thresholds, joints, and small obstacles better than smaller wheels.

When selecting caster wheel diameter, consider:

• Required overall equipment height
• Available mounting clearance
• Floor condition
• Load weight
• Frequency of movement
• Obstacles and thresholds
• Required push and pull effort

5. Check Wheel Width and Overall Caster Height

Caster dimensions affect both performance and equipment fit. Important caster measurements include:

• Wheel Diameter: The diameter of the wheel measured from edge to edge through its center.
• Wheel Width: The width of the wheel's rolling surface.
• Overall Height: The distance from the bottom of the wheel to the top of the caster mounting plate.
• Mounting Plate Dimensions: Check plate length, width, bolt-hole spacing, and bolt-hole diameter when replacing an existing plate-mounted caster.

These measurements are especially important when replacing existing casters because changing the overall caster height can affect equipment working height, clearance, and stability.

6. Swivel Casters vs. Rigid Casters

Swivel Casters

Swivel casters rotate around a vertical axis, allowing equipment to change direction and maneuver in confined areas.

Rigid Casters

Rigid casters remain aligned in a fixed direction and are useful for controlled straight-line travel.

Many industrial carts use two swivel casters and two rigid casters to combine maneuverability with directional control. Applications requiring maximum maneuverability may use four swivel casters.

7. Choose the Right Caster Brake or Lock

Caster brakes and locks can control wheel rotation, swivel movement, or both. The right option depends on how the equipment will be moved and secured.

Swivel Lock

A swivel lock prevents the caster from swiveling, allowing greater directional control when needed.

Face Wheel Brake

A foot-operated mechanism presses against the wheel tread to prevent the wheel from rolling.

Total Lock Brake

A total lock mechanism restricts both wheel rotation and caster swiveling, helping keep stationary equipment securely positioned.

8. Consider the Caster Swivel Bearing

The swivel bearing affects how smoothly a caster changes direction and can be an important consideration for equipment that is moved frequently.

Single Ball Bearings

Single ball bearing configurations can be appropriate when swiveling occurs infrequently and maximum swiveling efficiency is not required.

Double Ball Bearings

Double ball bearing designs use upper and lower raceways to distribute the load and provide smoother swiveling. They are commonly used when equipment changes direction frequently.

Which Industrial Caster Is Right for Your Application?

There is no single caster that is best for every application. Before making your selection, consider load capacity, floor surface, wheel material, wheel diameter, mounting style, operating environment, maneuverability, and braking requirements together.

A warehouse cart traveling across smooth concrete may require a very different caster than outdoor equipment traveling across asphalt or a heavy industrial rack that moves only occasionally.

Browse Material Flow's industrial casters and caster wheels to compare available options for material handling and industrial applications.