Product Description
Load Wheel
Frequently Asked Questions
Q: What is the diameter and width of the SU 9129-XL load wheel?
A: Exact dimensions for the SU 9129-XL are not provided in current documentation. However, the XL designation indicates larger dimensions compared to the standard SU 9129 (3.00 inch diameter x 3.66 inch width). Contact the manufacturer or distributor with your truck model number to confirm XL wheel dimensions before ordering. Verify the XL version will not contact frame components or suspension.
Q: Why would I choose SU 9129-XL instead of the standard SU 9129?
A: The XL version provides wider tread contact and potentially larger diameter, which improves load distribution and reduces per-wheel pressure on warehouse floors. This is beneficial for trucks carrying maximum rated loads on delicate or damaged floor surfaces. The XL also offers better traction and smoother ride characteristics on rough or uneven floors. However, it may increase rolling resistance and power consumption on smooth, level surfaces.
Q: Is the SU 9129-XL bearing the same size as the standard SU 9129?
A: The SU 9129-XL maintains the same 20 mm sealed precision bearing bore as the standard SU 9129, ensuring compatibility with most electric pallet truck axles. The XL upgrade focuses on increased wheel diameter and tread width, not bearing size. Always verify that the bearing bore size matches your truck axle specification before installation.
Q: Can I mix SU 9129-XL wheels with standard SU 9129 wheels on the same truck?
A: No. Do not mix XL and standard wheel sizes on the same truck. Mismatched wheel diameters cause uneven weight distribution, poor handling, and steering instability. If you install XL wheels, replace all load wheels on the truck. Failure to match wheel sizes can damage truck suspension components and create safety hazards during operation.
Q: How often does the SU 9129-XL wheel need replacement?
A: Polyurethane tread lifespan is typically 2000 to 4000 operating hours, same as the standard SU 9129. Larger tread width on the XL may extend lifespan slightly because wear is distributed over a wider contact area. However, actual replacement frequency depends on floor surface, load cycles, and operating conditions. Replace when tread is worn to one-half original thickness or when axial play becomes visible.
Q: What is the maximum load rating for a truck equipped with SU 9129-XL wheels?
A: Load ratings depend on truck frame and suspension design, not wheel selection alone. Verify your truck model nameplate or manual for maximum rated capacity. Installing SU 9129-XL wheels does not increase truck load capacity, but the larger contact patch reduces floor pressure and can prevent damage to sensitive floor surfaces at the same load rating. Contact the truck manufacturer to confirm load specifications for your truck model with XL wheels installed.