Product Description
Allis Chalmers OEM ball bearing AC 4253918 features an extended inner ring, 1.181 inch ID, 2.440 inch OD, and 0.629 inch width, constructed from high-carbon chromium steel for use in electric lift truck mast assemblies.
Specifications
Material & Construction
| Bearing Material | High-carbon chromium steel, precision ground |
Part Numbers
| OEM Part Number | AC 4253918 |
Frequently Asked Questions
Q: What are the exact dimensions of bearing AC 4253918?
A: AC 4253918 features an extended inner ring with 1.181 inch inner diameter, 2.440 inch outer diameter, and 0.629 inch width. Verify these dimensions match your mast assembly before ordering.
Q: What equipment uses AC 4253918 bearing?
A: AC 4253918 is specified for electric lift truck mast assemblies across Crown, Toyota, Raymond, Yale, Hyster, Linde, and other major OEM brands. The extended inner ring design is typical for mast and lift cylinder bearing applications.
Q: What material properties does AC 4253918 have?
A: This bearing is constructed from high-carbon chromium steel, precision ground for tight tolerances and durability under the sustained vertical and horizontal loads experienced in lift truck mast systems.
Q: How does the extended inner ring affect AC 4253918 performance?
A: The extended inner ring distributes load across a wider surface area, reducing bearing stress and extending lifespan under the repetitive lift cycles in mast assemblies. This design is essential for proper fitment and performance.
Q: What is the expected service life of AC 4253918?
A: Under proper lubrication and normal operating conditions, expect 3-7 years of service. High-cycle warehouse operations or dry operation will reduce service life. Monitor for noise or play as failure indicators.