Product Description
POLY LOAD WHEEL W/BEARINGS
Frequently Asked Questions
Q: What does the greaseable bearing design on the SU S9803-XL-A do?
A: Greaseable bearings on the SU S9803-XL-A allow you to inject lubricant through a zerk fitting (grease fitting) every 250-500 operating hours, depending on duty cycle and floor conditions. This extends bearing life, reduces friction, and prevents metal-to-metal contact that causes early failure. Non-greaseable wheels (like the SU S9803-XL) rely on factory-sealed lubrication and must be replaced when lubrication is exhausted.
Q: How often should I grease the SU S9803-XL-A wheels?
A: For standard warehouse use, grease the SU S9803-XL-A wheels every 250-500 hours of operation. Heavy-duty or outdoor applications require greasing every 200 hours. Use a lithium-based NLGI Grade 2 grease compatible with polyurethane wheels. Pump 2-3 shots from a hand grease gun until fresh grease appears around the wheel hub or bearing seal; do not overfill, as excess grease generates heat and can degrade the seal.
Q: Can I upgrade from SU S9803-XL to SU S9803-XL-A without any modification?
A: If your truck currently has SU S9803-XL wheels (non-bearing version), you can upgrade to SU S9803-XL-A only if your axle and hub clearance accommodate the larger bearing bore. Most standard electric lift trucks can accept this upgrade. Verify axle bore diameter and hub width before purchasing. If there is any doubt, contact us with your truck model and serial number to confirm compatibility.
Q: What happens if I do not grease the SU S9803-XL-A bearings?
A: Neglecting grease maintenance on SU S9803-XL-A wheels causes bearing preload to increase, friction to rise, and the wheel to become hard to turn. As lubrication breaks down, metal particles accumulate in the bearing race. Within 300-500 additional operating hours without greasing, the bearing begins to seize or roughness increases. Once a bearing fails, the entire wheel assembly must be replaced. Regular greasing prevents this failure and maintains full traction.
Q: Is the SU S9803-XL-A wheel suitable for wet floors?
A: The SU S9803-XL-A uses standard polyurethane and is designed for general industrial floors. The greaseable bearing does not improve wet-surface traction; traction depends on the rubber compound. For wet or cold storage areas, specify a wheel with a high traction polyurethane compound (such as an -EZ designation variant) in combination with greaseable bearings. Consult the application requirements before ordering.
Q: How do I remove and replace the SU S9803-XL-A wheel assembly?
A: Removal is the same as the non-bearing version: withdraw the axle pin or loosen the axle nut, tap the wheel straight off with a mallet. When installing the new SU S9803-XL-A wheel, ensure the bearing zerk fitting faces outward or upward for easy access to greasing. Reinstall the axle nut or pin and verify the wheel spins freely without rubbing. After installation, pump 2-3 shots of grease to establish a lubrication film before putting the truck in service.