Product Description
SU 9138-A Load Wheel Assembly by Liftsplus.com is a polyurethane tread wheel designed for Superior electric lift trucks, featuring a 3.25 inch outside diameter, 2.44 inch tread width, 2.047 inch bore diameter, 0.594 inch bearing bore depth, 93A Shore hardness, and 400 Series polyurethane construction. Suitable for tandem-load configurations and high-durability applications.
Specifications
Material & Construction
| Wheel Hub Material | Steel core |
Mechanical Specifications
| Compound (Polyurethane Material) | 401 series |
| Shore A Hardness | 93A |
| Wheel Series | 400 Series Polyurethane |
Part Numbers & Compatibility
| SKU | SU S9138-A |
| Manufacturer Part Number | SU 9138-A |
| Alternate Part Number | SU 9138 |
Frequently Asked Questions
Q: What are the key specifications for the SU S9138-A load wheel assembly?
A: The SU S9138-A is a 3.25 inch outside diameter, 2.44 inch tread width polyurethane load wheel with 93A Shore hardness. Bore diameter is 2.047 inch with 0.594 inch bearing bore depth. The wheel features 401 series polyurethane construction on a steel core hub, designed for 400 Series configurations and tandem-load applications.
Q: Is the SU S9138-A compatible with my electric lift truck model?
A: Compatibility depends on your trucks wheel mounting specifications. Verify that your unit requires a 3.25 inch diameter wheel with a 2.047 inch bore diameter and 2.44 inch tread width. Cross-reference your original equipment part number against the SU 9138-A or SU 9138 alternate part numbers. Always confirm bolt pattern and hub material compatibility before ordering.
Q: What does 93A Shore hardness mean for this wheel?
A: 93A Shore hardness indicates a medium-firm polyurethane compound. This hardness level provides good load-carrying capacity and wear resistance while maintaining adequate traction and shock absorption. The 401 series construction is engineered for durability in standard indoor material handling applications.
Q: How do I know if the SU S9138-A wheel needs replacement?
A: Replace the wheel if you observe uneven tread wear, visible cracks or chunks missing from the tread, a flat spot developing on the wheel face, or increased noise and vibration during operation. If the tread has worn to half its original thickness or the polyurethane has separated from the steel hub, replacement is required.
Q: What installation tools do I need to replace the SU S9138-A?
A: You will need a bearing puller or hub removal tool to separate the old wheel from its axle shaft, a socket set and wrench to remove fasteners, and a press or bearing installer to seat the new wheel and bearing assembly. Do not attempt to drive the wheel on with a hammer, as this will damage the bearing bore.
Q: How long should the SU S9138-A wheel last in normal operation?
A: Expected service life depends on daily run hours, load conditions, and floor surface. Typically, a 93A polyurethane wheel lasts 2 to 4 years under normal material handling use (8 to 10 hours per day on dry indoor floors). Heavy use, high-temperature environments, or rough outdoor surfaces will reduce lifespan. Inspect wheels quarterly and replace when tread wear reaches 50 percent.