Product Description
MH040000 is a radial ball bearing assembly for manual pallet jack wheels, with a 20 mm bore, 47 mm outer diameter, 14 mm width, sealed, constructed from ASTM 52100 chrome steel, and compatible with standard manual pallet jack wheel sets. No cross-reference part numbers available.
Specifications
Dimensional
| Fit Class | ISO h6 shaft, H7 bore tolerance |
Material
| Ball Material | Hardened chrome steel, total content per ASTM 52100 |
| Race Material | Through-hardened high carbon steel, ≥HRc 60 |
Part Numbers
| OEM Part Number | MH040000 |
Frequently Asked Questions
Q: What is the MH040000 and what manual pallet jack models is it compatible with?
A: The MH040000 is a radial ball bearing assembly engineered for standard manual pallet jack load and steering wheels. This bearing is compatible with manual pallet jack wheel sets across multiple OEM brands including Crown, Toyota, Raymond, and Yale models that use 20 mm bore wheel assemblies. Always verify your equipment bore diameter before ordering.
Q: What are the detailed specifications of the MH040000 bearing?
A: The MH040000 features a 20 mm bore (inner diameter), 47 mm outer diameter, and 14 mm width. Ball material is hardened chrome steel conforming to ASTM 52100 standards. Race material is through-hardened high carbon steel with a hardness of approximately HRc 60. The bearing uses ISO h6 shaft and H7 bore tolerances and comes sealed.
Q: Why does the MH040000 use ASTM 52100 chrome steel for ball bearings?
A: ASTM 52100 chrome steel provides superior hardness, fatigue resistance, and load-carrying capacity essential for material handling equipment. This specification ensures that the bearing balls maintain precise geometry and resist micro-spalling under repetitive loads typical of pallet jack wheel operation.
Q: How long does the MH040000 bearing last in typical warehouse service?
A: The MH040000 typically delivers 24 to 48 months of service life under normal warehouse conditions with moderate to standard loads. The sealed design and high-quality materials extend longevity. Heavy-load operations or rough floor conditions may reduce service life. Replace when wheel rotation becomes rough or noisy.
Q: Is the MH040000 sealed and what does that mean for maintenance?
A: Yes, the MH040000 is sealed, meaning the bearing races and balls are protected from dust and moisture intrusion. Sealed bearings require minimal maintenance compared to open designs. Regular inspections for wear and rough rotation are sufficient. Do not attempt to relubricate sealed bearings.
