CAT 8U-2353 46mm Inner Diameter Oil Groove Bushing

CAT 8U-2353 is a Caterpillar straight-tube steel bushing (sleeve/sleeve bearing) that is compatible with connecting rods, rocker arm shafts, balance shafts, and other parts of Cat 3306 engines, D8L bulldozers, 966F loaders, and other models. It is used for sliding support and wear protection, reducing friction and wear between the shaft and the housing, and is a key wear-resistant component of the transmission and power system. The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 8U-2353, Type: Straight cylindrical steel bushing, Material: 20CrMo alloy steel pipe (inner hole quenching + tempering, hardness HRC58-62, surface phosphate treatment, corrosion resistance ≥72 hours salt spray), Single weight approximately 0.52 kg, Applicable temperature: -40℃ to +180℃, Suitable lubrication method: oil lubrication / grease lubrication, Suitable for low-speed heavy-load sliding friction, Bearing radial load ≤25 kN

Key Dimensions
Inner diameter: 50.80 mm (tolerance +0.02/-0.01 mm), Outer diameter: 63.50 mm (tolerance +0.03/-0.02 mm), Length: 38.10 mm (tolerance ±0.10 mm), Wall thickness: 6.35 mm, Inner hole surface roughness Ra≤0.4 μm, Chamfered ends C1.5×45°, suitable for pin diameter 50.80 mm (tolerance 0/-0.02 mm), housing bore diameter 63.50 mm (tolerance +0.02/-0.01 mm)

Compatible Models and Applications: Compatible with Cat 3306 engine connecting rod bushings, D8L bulldozer steering knuckle kingpin bushings, 966F loader boom pin bushings, and 777D mining truck suspension balance shaft bushings. One piece per component, installed between the housing bore and the pin, providing sliding support and positioning.

Performance Parameters: Rated radial dynamic load ≥60 kN, rated radial static load ≥90 kN, coefficient of friction μ≤0.002 (oil lubrication), wear life ≥2000 hours (under rated load), limiting speed ≤1500 r/min (oil lubrication), impact resistance ≥100 kN (instantaneous)

Structural and Performance Advantages: Wear-resistant and durable: 20CrMo The alloy steel pipe boasts high strength, with internal quenching treatment resulting in high hardness and excellent wear resistance. Phosphating enhances its corrosion resistance, making it suitable for harsh working conditions in engineering machinery and extending component lifespan.

Precise Fit: Strict dimensional tolerance control ensures a precise interference fit (0.01-0.03 mm) with the original factory pins and housing bores, guaranteeing stable support and no loosening after installation.

Efficient Lubrication: The straight cylindrical structure facilitates uniform distribution of lubricating oil/grease. Low internal surface roughness reduces friction loss and energy consumption, accommodating both oil and grease lubrication.

Easy Installation: Installation can be achieved through cold pressing or hot fitting (cold pressing pressure ≤50 kN, hot fitting temperature 80-100℃), requiring no complex tooling and offering high installation efficiency.

Installation and Maintenance Points:
**Before installation, clean the inner and outer surfaces of the bushing, the pin, and the housing bore. Check the bushing for cracks, deformation, and damage to the inner bore.** For cold pressing, use a special pressure block to apply even pressure and press the bushing into the housing bore. For hot pressing, heat the bushing and quickly insert it into the housing bore; it will automatically fit after cooling. After installation, check that the clearance between the bushing and the pin is 0.01-0.03 mm to ensure smooth sliding without jamming.

Every 1500 hours of maintenance: Check the bushing wear (replace if the inner bore wear is ≥0.1 mm), add lubricating oil/grease, and check the wear of the pin and housing bore. If the wear is severe, replace them simultaneously to prevent premature bushing failure.

Prioritize original parts. Aftermarket parts may have more material impurities, insufficient hardness, dimensional deviations, etc., which can easily lead to rapid bushing wear, causing accelerated wear on the shaft and housing, and affecting equipment operation.