Product Description
BEARING assembly, SKU 6400550, designed as a sealed radial bearing for manual pallet jack fork assemblies. Manufactured from SAE 52100 bearing steel, precision ground, dual-lip seal protected, rated for 1100 lbs dynamic radial load. Factory pre-lubricated, ABEC 1/ISO Class 6 tolerances, compatible with 0.75 inch axle bore per OEM specifications. No cross-references or superseded part numbers confirmed for this SKU.
Specifications
Dimensional
| Tolerance Class | ABEC 1 / ISO Class 6 |
Material & Construction
| Hardness | Rockwell C58 minimum |
Part Numbers & Compatibility
| Manufacturer Part Number | 6400550 |
| OEM Part Number | 6400550 |
Performance
| Service Life | Designed for 10,000 load cycles minimum under rated load |
Frequently Asked Questions
Q: What are the specifications for sealed radial bearing 6400550?
A: SKU 6400550 is a sealed radial bearing manufactured from SAE 52100 bearing steel with precision-ground surfaces, dual-lip seal protection, and ABEC 1 / ISO Class 6 tolerances. The bearing has a 0.75 inch axle bore and is rated for 1100 lbs dynamic radial load. It is factory pre-lubricated and compatible with manual pallet jack fork assemblies per OEM specifications.
Q: What is the minimum service life of bearing 6400550 under rated load?
A: Bearing 6400550 is designed for a minimum of 10,000 load cycles under its rated 1100 lbs dynamic radial load. Actual service life depends on operating frequency, load distribution, maintenance, and environmental conditions such as moisture exposure or temperature extremes.
Q: Can bearing 6400550 be used in cold storage?
A: The SAE 52100 steel construction and dual-lip seal design of bearing 6400550 support operation in cold environments. Verify the complete specification sheet for minimum operating temperature and seal material compatibility before deploying in cold storage applications.
Q: What does ABEC 1 / ISO Class 6 tolerance mean for bearing 6400550?
A: ABEC 1 / ISO Class 6 tolerances indicate standard precision grade suitable for general material handling and industrial equipment. This tolerance class ensures smooth rotation and adequate fit for manual pallet jack fork assemblies without requiring critical alignment.
Q: What is the hardness specification for bearing 6400550?
A: Bearing 6400550 has a minimum Rockwell C58 hardness rating. This hardness specification is standard for SAE 52100 bearing steel and provides resistance to indentation and fatigue failure under repetitive loading in material handling applications.
