Product Description
SU 9139-EZ load wheel assembly featuring polyurethane on steel hub construction with pre-pressed sealed bearings. Engineered for electric lift trucks and powered pallet jacks with complete mounting hardware. Cross-compatible with SU 9139-XL-A configurations for Superior brand equipment applications.
Specifications
Material & Construction
| Hub Material | Solid steel hub construction |
| Tread Material | Industrial grade polyurethane elastomer |
Part Numbers & Compatibility
| OEM Part Number | SU 9139-EZ |
| Cross-Reference Part Numbers | Related assembly SU 9139-XL-A for Superior brand applications |
| Application Type | Load wheel assembly for material handling equipment |
Performance
| Load Distribution | Designed for multi-wheel load sharing in Class 2 electric reach truck applications |
| Service Application | Continuous duty cycle in material handling operations |
Frequently Asked Questions
Q: What does the -EZ designation mean for the SU 9139-EZ wheel assembly?
A: The -EZ suffix indicates a High Traction polyurethane compound formulation designed for material handling equipment in general applications, wet floors, and cold storage environments. EZ does not refer to easy installation or easy replacement. This compound provides enhanced grip and durability in challenging conditions.
Q: Is the SU 9139-EZ cross-compatible with SU 9139-XL-A?
A: Yes, the SU 9139-EZ is cross-compatible with the SU 9139-XL-A configuration. Both use the same solid steel hub construction with pre-pressed sealed bearings and include complete mounting hardware. Verify your equipment model and serial range before installation to confirm fitment.
Q: What maintenance is required for the sealed bearings on the SU 9139-EZ?
A: The pre-pressed sealed bearings are maintenance-free under normal operating conditions. Do not attempt to repack or re-lubricate sealed bearings. If the wheel exhibits grinding noise, binding, or excessive runout, replace the assembly. Regular inspection for cracks or deformation in the polyurethane tread is recommended monthly.
Q: What equipment types are compatible with the SU 9139-EZ load wheel assembly?
A: The SU 9139-EZ is engineered for electric lift trucks and powered pallet jacks. Verify your equipment OEM, model, and serial range against the cross-reference SU 9139-XL-A to confirm compatibility before ordering. Load capacity depends on the specific equipment configuration and should be verified against your equipment documentation.
Q: How do I install the SU 9139-EZ wheel assembly?
A: The SU 9139-EZ comes with complete mounting hardware. Remove the axle bolt, slide the old wheel off, and install the new wheel onto the axle shaft. Ensure the bore diameter matches your axle shaft size. Reinstall the axle bolt and torque according to your equipment manufacturer specifications. Do not over-tighten, as this can damage sealed bearings.
Q: What is the typical service life of the SU 9139-EZ polyurethane tread?
A: Service life depends on usage intensity, floor conditions, and load. In normal warehouse conditions, polyurethane treads typically last 12 to 24 months. High-traction -EZ compounds may extend life in wet or cold storage. Replace when tread depth visibly decreases, flat spots appear, or hardness increases significantly.