CAT 168-6530 BRG

CAT 168-6530 is a Caterpillar genuine single-row cylindrical roller bearing (with cage), suitable for the transmission or running gear systems of heavy machinery such as excavators and loaders. It is used to withstand heavy radial loads and is suitable for high-speed applications. The following are the original manufacturer’s precise specifications and application information, excluding replacement parts (Cat).

Core Technical Parameters

Item Details
Part Model: CAT 168-6530 (Single Row Cylindrical Roller Bearing)

Material: Rolling elements: 52100 high-carbon chromium bearing steel, hardness after quenching HRC 61-65, surface roughness Ra ≤ 0.04 μm; Outer ring/Inner ring: Same material, integrally quenched; Cage: Stamped brass, tensile strength ≥ 400 MPa

Key Dimensions: Inner diameter 100 mm (3.937 in), outer diameter 180 mm (7.087 in), width 46 mm (1.811 in), roller diameter 16 mm, number of rollers 18

Single Weight: Approx. 4.2 kg (9.26 lbs)

Tolerance Standards: Inner diameter tolerance P6 (+0.025/+0.002 mm), outer diameter tolerance p6 (-0.002/-0.025 mm), width tolerance ±0.03 mm
Core Characteristics: Rated dynamic load 220 kN, rated static load 280 kN, limiting speed 3600 rpm (oil lubrication), operating temperature -40℃ to +120℃, impact resistant, low coefficient of friction (≤ 0.003)
Structure and Core Functions:
Radial Load Bearing: Single-row cylindrical roller structure, suitable for heavy-duty conditions, can withstand continuous or impact radial loads, disperses pressure, and avoids direct contact wear between the shaft and housing (Cat).

High-Speed ​​Adaptability: The cage precisely positions the rollers, reducing friction between rollers, adapting to the high-speed requirements of the transmission system, ensuring rotational accuracy, and reducing operating noise and vibration (Cat).

Flexible Installation: The inner ring can be separated for easy installation and maintenance, adapting to the assembly requirements of different shaft diameters and housing bore diameters.

Compatible Models and Application Scenarios:
Compatible Equipment: CAT 320D and 323D excavators, 966H and 972H loaders, and transmission systems and travel reducers of some mining trucks. Core applications: Installed on drive axles, gearbox output shafts, or travel reducers to bear heavy radial loads. Suitable for heavy-duty, high-speed operation scenarios in construction machinery, ensuring stable operation of the transmission system.