Product Description
SU S9129 is a nylon load wheel for electric lift trucks featuring a 3.00 inch diameter, a 3.66 inch width, and a 20 mm sealed precision bearing, designed for direct replacement applications where high impact resistance and smooth rolling performance are required. The wheel body is single-piece machined nylon, compatible with 20 mm axles.
Specifications
Material & Construction
| Wheel Material | High-impact nylon |
| Surface Finish | Machined nylon with smooth rolling surface |
Part Numbers
| OEM Part Number | SU S9129 |
Frequently Asked Questions
Q: What are the exact dimensions and bearing specifications of SU S9129?
A: SU S9129 is a 3.00 inch diameter by 3.66 inch width nylon load wheel with a 20mm sealed precision bearing and single-piece machined nylon body. The 20mm bore accommodates standard 20mm axles. The sealed bearing eliminates the need for lubrication and extends lifespan in wet or dusty environments. Verify that your electric lift truck axle is 20mm before purchasing; undersized or oversized axles will cause improper fitment.
Q: What is the load capacity of the SU S9129 and which truck models does it fit?
A: The 3.00 inch diameter and 3.66 inch width indicate a light-duty wheel with a typical load rating of 600 to 1000 pounds per wheel. This wheel fits compact and light-load electric lift trucks such as walk-behind pallet jacks and narrow-aisle stackers. Consult your truck manual to confirm the recommended wheel size; oversizing or undersizing can compromise steering and stability.
Q: Can I replace worn rubber wheels with SU S9129 nylon wheels on my electric truck?
A: Yes, if the bore (20mm), diameter (3.00 inch), and width (3.66 inch) match your current wheels exactly. Nylon wheels offer superior impact resistance and longer lifespan compared to rubber on smooth warehouse floors. However, nylon is harder and may increase vibration on uneven concrete or outdoor surfaces. Inspect your current wheel dimensions and ensure all four wheels are replaced as a set to maintain even ride and steering response.
Q: What does sealed precision bearing mean and how does it affect maintenance?
A: A sealed precision bearing is permanently enclosed and pre-lubricated at the factory, meaning it does not require oiling or regreasing during service life. The seal prevents water, dirt, and debris from entering the bearing cavity. If a sealed bearing begins to make noise or feels gritty when spinning, the bearing is damaged and the entire wheel assembly must be replaced; the bearing cannot be serviced separately. Sealed bearings typically last 24-48 months before replacement is needed.
Q: Is installation of SU S9129 plug-and-play or does the axle require modification?
A: Installation is plug-and-play if your 20mm axle is clean and undamaged. Remove the retaining clip, slide the old wheel off, inspect the axle for rust or burrs, clean if necessary, then slide SU S9129 onto the axle and re-secure with the retaining clip. The single-piece nylon body is rigid and requires no adjustments. If the wheel does not slide freely, do not force it; stop and verify axle diameter is truly 20mm.
Q: Does SU S9129 cross-reference to other manufacturer load wheels?
A: SU S9129 is equivalent to Yale MPB135 and Hyster WH1130 in light-duty nylon construction and 3.00x3.66 inch sizing with 20mm bore. Always verify diameter, width, and bore size before substituting, as dimension mismatches will prevent proper installation. Request the OEM part number from your truck manual if you are uncertain; do not guess on wheel specifications.