Product Description
3 X 2 Caster Wheel
Frequently Asked Questions
Q: What is the mounting configuration of the SU S938 caster wheel?
A: The SU S938 is a 3 inch by 2 inch caster wheel, meaning the wheel diameter is 3 inches and the width is 2 inches. It is designed for electric hand trucks, pallet jacks, and narrow-aisle lift equipment. The exact mounting pattern depends on the forks or chassis your jack uses.
Q: Can I swap the SU S938 for caster wheels from other brands?
A: The SU S938 can replace equivalent 3 x 2 caster wheels from Crown, Yale, Raymond, and CAT lift trucks if the bolt pattern and stem size match. Do not assume interchangeability based on diameter and width alone. Verify your OEM part number and stem diameter (typically 1/2-inch or 5/8-inch) before ordering as a replacement.
Q: What surfaces is the SU S938 suitable for?
A: The SU S938 works on smooth, level warehouse floors, concrete, and asphalt. Small diameter wheels like 3 inches are prone to sticking or tracking poorly on rough concrete, gravel, or uneven surfaces. If your floor is rough or outdoors, consider a larger wheel diameter (4 to 6 inches) or a softer polyurethane compound for better traction.
Q: How do I diagnose if the SU S938 caster wheel needs replacement?
A: Signs of wear include flat spots or visible damage to the tire, reduced steering response, resistance to rolling, or noise when turning. Spin the wheel by hand. If it does not spin freely, the bearing is likely damaged. If the tire is visibly cracked, flat-spotted, or worn smooth, replacement is necessary.
Q: Is the SU S938 a polyurethane wheel or rubber wheel?
A: The material composition of the SU S938 depends on the specific variant ordered. Most standard models use polyurethane or rubber compounds. Polyurethane provides better abrasion resistance and durability on concrete. If you need high traction on wet floors or cold storage applications, specify the -EZ variant, which features a high-traction polyurethane compound designed for those conditions.
Q: What is the load rating of the SU S938?
A: The load capacity of the SU S938 depends on the number of casters on your jack, the bearing type, and the stem size. For a typical 4-caster hand truck, each caster supports roughly one-quarter of the total truck capacity. A 3000-pound hand truck typically has each caster rated for 750 to 1000 pounds. Do not exceed the maximum load rating of your entire truck, as overloading causes premature bearing failure and caster damage.