CAT 9H-5205 BEARING

CAT 9H-5205 is a Caterpillar genuine needle roller bearing without an inner ring. It is suitable for use in gearboxes, differentials, or wheel hubs of forklifts, loaders, and other equipment to withstand heavy radial loads and limit axial displacement. The following is key information.

Core Technical Parameters

Item Details
Part Model: CAT 9H-5205 (Needle Roller Bearing without Inner Ring, Single Row, Cage-less Guided, Stamped Outer Ring, No Seal)

Material: Outer Ring: SPCC Carbon Steel Stamped; Needle Rollers: GCr15 Bearing Steel, Hardened (HRC 60-64)

Key Dimensions: Inner Diameter 38.1 mm (1.50 in), Outer Diameter 50.8 mm (2.00 in), Width 25.4 mm (1.00 in), Chamfer 0.8 mm

Single Weight: Approx. 0.1 kg (0.2205 lbs)

Load and Speed: Radial Dynamic Load 24.9 kN, Radial Static Load 22.5 kN; Limiting Speed ​​6000 rpm (under full lubrication conditions)

Core Features: Inner ringless design, suitable for shaft diameters of 38.1 mm The optical shaft features a high-rigidity stamped outer ring and high needle roller density, making it suitable for heavy radial loads and low-speed applications.

Suitable operating conditions: Suitable for temperatures ranging from -40℃ to +120℃, ideal for components in engineering machinery such as gearboxes and differentials that experience high radial stress and low axial displacement.

Structure and core functions:
**Inner ring-less needle roller structure:** The needle rollers directly contact the optical shaft, saving installation space and suitable for applications requiring precise shaft diameters, while also reducing component weight and cost.

High-rigidity stamped outer ring: The SPCC carbon steel stamped outer ring, after shaping and quenching, offers high rigidity and can withstand large radial loads, making it suitable for heavy-duty applications.

High-density needle roller configuration: Small diameter and numerous needle rollers provide a large contact area, effectively distributing radial loads and suitable for low-speed, high-frequency impact applications in engineering machinery.

Seamless design: Suitable for internal oil bath lubrication environments, relying on system lubricating oil to reduce friction and wear, extending service life.

Compatible Models and Application Scenarios

Compatible Equipment: CAT forklifts (e.g., DP30, DP40 series), mini loaders (e.g., 906H, 907H), and the swing mechanism of some excavators.

Core Applications: Used in gearbox input shafts, differential half-shafts, wheel hubs, etc., to withstand radial heavy loads, limit radial runout of the shaft, ensure stable operation of the transmission system, and is suitable for low-speed, high radial load conditions.

Installation and Maintenance Points

Installation: Clean the shaft diameter and bearing housing bore. The shaft diameter surface roughness Ra ≤ 0.8 μm, free of burrs and scratches. Use a dedicated pressing tool to press the bearing into the bearing housing bore. Do not strike the outer ring to prevent deformation.

The shaft diameter tolerance should be controlled within h6 (0/-0.016 mm), and the bearing housing bore tolerance should be controlled within H7 (+0.030 mm) to ensure precise fit between the bearing and the shaft/housing bore.

Maintenance: Ensure the internal oil bath lubrication system of the equipment is functioning properly. Regularly check the oil level and quality, and change the lubricating oil according to the maintenance schedule to ensure adequate lubrication of the needle rollers.

Regularly check the bearing operating temperature. If the temperature exceeds 80℃ or abnormal noise occurs, stop the machine immediately for inspection and troubleshoot issues such as overload or insufficient lubrication.

For long-term storage, apply rust-preventive oil and seal the machine to prevent corrosion of the needle rollers and outer rings, which could affect installation and performance.