Product Description
Bearing assembly, SKU 63042Z, is a single row deep groove ball bearing with shielded closures, 20 mm bore diameter, 47 mm outer diameter, 14 mm width, and cross-reference compatibility to 6304Z2, 6304-ZZ, and 6304ZZ. Constructed from SAE 52100 bearing steel with Rockwell C58 minimum hardness, suitable for manual pallet jack wheel assemblies requiring 6304 series bearings.
Specifications
Compatibility
| Compatible with | Manual pallet jack wheel assemblies using metric bearing 6304 series |
Material
| Material Specification | Bearing steel (SAE 52100/ISO 100Cr6) |
| Hardness | Rockwell C58 min on raceways |
Part Numbers
| OEM Part Number | 63042Z |
| Cross-Reference Part Numbers | 6304Z2, 6304-ZZ, 6304ZZ |
| Equivalent Part Numbers | 6304-2RS, 6304-ZZ |
| Supersedes/Replaces | Replaces 6304-ZZ |
Frequently Asked Questions
Q: What are the dimensions of the 63042Z bearing assembly?
A: The 63042Z is a single row deep groove ball bearing with a 20 mm bore diameter, 47 mm outer diameter, and 14 mm width. These dimensions make it compatible with manual pallet jack wheel assemblies that require 6304 series bearings.
Q: What cross-reference bearings are equivalent to the 63042Z?
A: The 63042Z has direct cross-compatibility with 6304Z2, 6304-ZZ, 6304ZZ, and 6304-2RS. These part numbers reference the same bearing design from different manufacturers or specifications. Verify that the bore and outer diameter match your equipment before ordering.
Q: What material and hardness specification does the 63042Z bearing have?
A: The 63042Z is constructed from SAE 52100 bearing steel (ISO 100Cr6) with a minimum Rockwell C58 hardness on the raceways. This material composition provides the durability and load capacity required for manual pallet jack applications.
Q: Are the shields on the 63042Z sealed or unsealed?
A: The 63042Z features metal shields (Z designation) rather than full seals. Metal shields protect against large debris and contaminants while allowing slightly more bearing grease movement compared to sealed designs. They are not contact seals and do not trap lubrication as effectively as 2RS seals.
Q: How long does a 63042Z bearing typically last in manual pallet jack service?
A: Bearing lifespan depends on load, frequency of use, and environmental conditions. In typical warehouse service, a properly installed 63042Z bearing should function for 2-5 years or longer. Cold storage, wet floors, and heavy-duty continuous use shorten lifespan. Monitor for noise or resistance as indicators of wear.