Product Description
Precision steer wheel assembly for manual pallet jacks featuring a 7.25 inch nylon tread on a polyurethane hub with dual-sealed deep-groove ball bearings. Designed for direct replacement compatibility with Pallet Mule AA5000 and AA5500 models, delivering high mechanical durability and low rolling resistance for smooth operation and reduced operator fatigue.
Specifications
Material Composition
| Wheel Tread Material | Nylon (outer tread) |
| Hub Material | Polyurethane (inner hub) |
| Hub Construction | Injection-molded polyurethane compliant with ASTM D412 |
| Tread Hardness | Shore D 75 (nylon) |
| Bearing Type | Dual-sealed deep-groove ball bearings, 20 mm bore |
Part Numbers
| Part Number | PU AA-725x2 PMWB-ST |
| Manufacturer Part Number | AA-7.25x2 PMWB-ST |
| Cross-Reference Part Numbers | AA-7.25x2 PMWB-HD, AA-7.25x2 STEER WHEEL ASSEMBLY NYLON, AA-7.25x2 PMWB (Ultra-Poly) |
| Compatible Models | Pallet Mule AA5000, AA5500 |
Performance
| Wheel Diameter | 7.25 inches |
| Wheel Assembly Service Factor | 1.0 (intermittent manual duty) |
| Operational Characteristics | Low rolling resistance, reduced friction, suitable for cold storage environments |
Frequently Asked Questions
Q: What are the dimensions and tread material for the PU AA-725x2 PMWB-ST?
A: This steering wheel assembly measures 7.25 inches diameter with nylon outer tread on a polyurethane hub. The nylon construction delivers low rolling resistance and reduced friction compared to all-poly wheels.
Q: Which Pallet Mule models does this steering wheel fit?
A: The PU AA-725x2 PMWB-ST is directly compatible with Pallet Mule AA5000 and AA5500 models. Verify your equipment model number before ordering to confirm fitment.
Q: What bearing system is used in this assembly?
A: This part features dual-sealed deep-groove ball bearings providing protection from contaminants and extended service life. The 20 mm bearing bore is standard for manual pallet jack platforms.
Q: What are the cross-reference and equivalent part numbers?
A: The PU AA-725x2 PMWB-ST is equivalent to AA-7.25x2 PMWB-HD, AA-7.25x2 STEER WHEEL ASSEMBLY NYLON, and AA-7.25x2 PMWB (Ultra-Poly). OEM documentation may reference AA-7.25x2 PMWB-ST.
Q: Why choose nylon tread over polyurethane?
A: Nylon tread reduces rolling resistance and mechanical load on the jack frame, resulting in easier operation and lower energy requirements. The polyurethane hub provides structural support while the nylon reduces friction.
Q: Is this steering wheel suitable for low-temperature environments?
A: Nylon maintains flexibility and roll characteristics better than poly at cold temperatures. This assembly is suited for refrigerated or cold storage operations where standard polyurethane wheels become too rigid.