Product Description
Atlas AT Z-1129 is a radial ball bearing for manual pallet jack load and steer wheel assemblies. It features a 20 mm bore, 47 mm outside diameter, 14 mm width, dual rubber seals (2RS), and is constructed from high-carbon chrome steel, verified for Atlas Zenith Type 9 pallet jacks.
Compatibility: Fits pallet jacks made by Atlas, model Zenith. SKU: AT Z-1129
Specifications
Material
| Bearing Material | High-carbon chrome steel |
| Ball Material | Hardened steel |
| Cage Material | Pressed steel |
| Finish | Precision ground |
Part Numbers
| OEM Part Number | AT Z-1129 |
| Manufacturer Part Number | Z-1129 |
| Compatible Equipment | Atlas Zenith Type 9 manual pallet jack |
Frequently Asked Questions
Q: What are the exact dimensions of the AT Z-1129 bearing?
A: The AT Z-1129 is a radial ball bearing with a 20 mm bore, 47 mm outside diameter, 14 mm width, and dual rubber seals (2RS configuration). These dimensions make it suitable for load and steer wheel assemblies on Atlas Zenith Type 9 manual pallet jacks.
Q: What material is the AT Z-1129 bearing made from and why does that matter?
A: The AT Z-1129 features a high-carbon chrome steel raceway with hardened steel balls and pressed steel cage. This combination provides superior load-carrying capacity and resistance to shock loads common in pallet jack wheel assemblies. High-carbon chrome steel maintains hardness and dimensional stability under continuous operational stress.
Q: What does the 2RS seal designation mean on the AT Z-1129?
A: 2RS means the bearing has dual rubber seals on both sides. These seals retain factory grease and exclude contaminants like dirt, moisture, and debris. The 2RS configuration extends bearing life in dirty warehouse and outdoor environments typical of material handling operations.
Q: How long does the AT Z-1129 bearing typically last before replacement?
A: Under normal operating conditions in a manual pallet jack, the AT Z-1129 bearing typically provides 24 to 36 months of service life. Lifespan depends on load cycles per day, maintenance (regular greasing if applicable), floor conditions, and environmental factors. Premature wear indicates possible misalignment, contamination, or bearing preload issues.
Q: What failure symptoms indicate the AT Z-1129 bearing needs replacement?
A: Common failure symptoms include wheel wobble or runout, grinding or squealing noise from the wheel assembly, increased rolling resistance requiring more pump effort, and visible play in the wheel when manually rotated. Any of these conditions warrant bearing replacement to prevent complete wheel lockup and equipment downtime.
Q: Is the AT Z-1129 compatible with non-Atlas equipment?
A: The AT Z-1129 is designed and verified for Atlas Zenith Type 9 manual pallet jacks. Do not assume compatibility with other manufacturers without confirming bore, outside diameter, and width match your equipment. Cross-verify the mounting configuration and hub interface before ordering for other brands.