Product Description
OEM precision sealed ball bearing assembly for manual pallet jack applications, SKU 0578977-00, designed to support rotational components in load or steer wheel positions. Constructed from bearing-grade hardened steel, this part features a dual-sided rubber seal and ground raceways for optimal performance. Typical dimensions are 20mm inner diameter, 47mm outer diameter, and 14mm width. No cross-reference part numbers are presently available from approved sources.
Specifications
Material & Construction
| Bearing Material | Hardened bearing-grade steel |
| Finish | Ground and polished raceway surface |
Part Numbers
| OEM Part Number | 0578977-00 |
Frequently Asked Questions
Q: What are the exact dimensions of bearing assembly 0578977-00?
A: SKU 0578977-00 features a 20mm inner diameter, 47mm outer diameter, and 14mm width. These dimensions make it compatible with manual pallet jack load wheels and steer wheel applications across multiple OEM brands. Verify your equipment bearing bore matches these specifications before ordering.
Q: What materials and construction methods does bearing 0578977-00 use?
A: This OEM precision sealed ball bearing assembly is constructed from hardened bearing-grade steel with ground and polished raceway surfaces for smooth operation. The dual-sided rubber seal design provides weather protection and contamination resistance suitable for indoor and outdoor manual pallet jack service. Seals prevent grease loss while blocking water and dirt ingress.
Q: Which manual pallet jack equipment models are compatible with 0578977-00?
A: This bearing assembly fits manual pallet jacks from Crown, Toyota, Raymond, Yale, Hyster, and comparable OEM manufacturers. The 20x47x14mm dimensions are standard across many models designed for 2,000-5,500 lb load ratings. Verify your equipment bearing pocket dimensions and load rating before ordering.
Q: How long does bearing assembly 0578977-00 last with proper maintenance?
A: Expected service life is 3-5 years in normal material handling operations with regular lubrication every 250-500 operating hours. Life span extends significantly in light-duty applications or indoor warehouse environments with consistent operating conditions. Wet environments or high-cycle applications may reduce service life to 2-3 years.
Q: Are there alternative part numbers or cross-references for 0578977-00?
A: No cross-reference part numbers are presently available from approved aftermarket sources. Use the exact OEM SKU 0578977-00 when ordering to ensure precise specification match. This bearing is an OEM precision assembly with exacting tolerances not replicated by generic alternatives.
Q: What failure symptoms indicate bearing 0578977-00 needs replacement?
A: Replace the bearing assembly if you observe grinding noise during wheel rotation, resistance or binding when wheels should spin freely, visible wear or discoloration of the seal, or excessive side play when the wheel moves laterally. Noise that does not clear after lubrication indicates internal raceway or ball damage requiring replacement.
