High-Quality Needle Bearing NA4822-XL– Direct Replacement for Cat 557-0213 (5570213) | Fits Construction Machinery | Fast Global Shipping

Precision Engineered for Heavy-Duty Performance

Our NA4822-XL needle roller and cage assembly is a high-precision, direct-fit replacement for Cat part number 557-0213, commonly used in track idlers, tensioners, and undercarriage systems on Cat D6, D8, 950, 966, and other medium-to-large construction machines. Designed for reliability in extreme conditions, this bearing delivers superior load capacity, smooth rotation, and extended service life—even in dusty, high-shock environments.

Fully interchangeable with OEM specifications—no machining or modification required. Ensures seamless installation and reliable operation.

Specifically engineered for track idler shafts and tensioner assemblies, where high radial loads, contamination, and constant vibration demand robust performance.

Rollers: Made from vacuum-degassed GCr15 chrome steel, heat-treated to HRC 58–62 for maximum fatigue resistance.Cage: Precision-stamped low-carbon steel with smooth surface finish to reduce friction and wear.

Bore (Shaft Fit): 110 mm

Outer Diameter: 140 mm

Width: 30 mm

Factory-filled with high-viscosity lithium complex grease suitable for wide temperature ranges (–30°C to +150°C). Reduces initial wear and extends relubrication intervals.

We maintain strategic inventory in USA, Australia, and UAE warehouses—enabling fast dispatch to North America, Oceania, Middle East, and beyond. Sample orders (1–5 pcs) welcome!

Every batch undergoes dimensional inspection and hardness testing. Material certificates, inspection reports, and CAD drawings (STEP/IGES) available upon request.

We currently have 560.pcs of NA4822-XL Needle Roller Bearing In Stock.If you are in need of NA4822-XL Bearing ,just feel free to contact us.We can assure you the best quality; the most competitive prices; the shortest delivery time and the highest quality service.
Besides,we also have the models given as below in Stock:

• Strict inspection of insulation layer and dielectric strength
• Stable batch production for railway projects
• OEM and customized solutions supported
• Competitive factory pricing for bulk buyers
• Technical support for traction motor bearing selection