CAT 154-4505 22mm Inner Diameter Camshaft Bearing

CAT 154-4505 is a Caterpillar single-row cylindrical roller bearing, designed for high-load, medium-to-low-speed transmission scenarios in heavy equipment. It is commonly used in the final drive, differential, or gearbox of loaders, bulldozers, etc. Its core function is to bear radial loads and constrain the radial runout of the shaft, making it a key component for the stable operation of the transmission system. The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 154-4505, Type: Single-row cylindrical roller bearing (without cage / stamped cage), Material: High-carbon chromium bearing steel (chromium content 1.5%), Surface: Carburizing and quenching + grinding, Single weight: Approximately 1.8 kg, Suitable temperature: -40℃ to +150℃, Lubrication method: Grease lubrication (lithium-based grease recommended) / Oil lubrication, Installation fit: Shaft interference fit, Seat transition fit

Key Dimensions
Inner diameter: 100 mm, Outer diameter: 150 mm, Width: 35 mm, Chamfer: 2×45°, Radial runout: ≤0.02 mm, End face runout: ≤0.015 mm, Shaft interference fit: 0.02-0.04 mm, Suitable shaft diameter: 100 mm (tolerance g6), Bearing seat bore diameter: 150 mm (tolerance H7)

Suitable Models and Locations
Suitable for: Cat 966K/972L loader boom pin bearing, D6T bulldozer final drive hub bearing, 420F2 excavator slewing gearbox output shaft bearing, 1 piece per shaft, suitable for speeds ≤2500 rpm and radial loads ≤80 kN, not suitable for pure axial load scenarios.

Performance Parameters: Dynamic rated load Cr=110 kN, static rated load Cor=125 kN, limiting speed grease lubrication 2200 rpm, oil lubrication 2800 rpm, tensile strength ≥1200 MPa, hardness HRC60-64, impact toughness ≥20 J/cm²

Structural and Performance Advantages:
Material and Process: High-carbon chromium bearing steel, carburized and quenched, possessing high hardness, wear resistance, and toughness, capable of withstanding the impact and alternating loads of heavy equipment, reducing fatigue damage.

Load-bearing characteristics: The cylindrical roller line contact design provides strong radial load-bearing capacity, suitable for heavy-duty applications. Precise roller guidance reduces operating friction and heat generation, improving transmission efficiency.

Precision control: Precision grinding ensures dimensional and geometric tolerances, minimizing radial/end-face runout, reducing equipment vibration and noise, and extending the lifespan of related components.

Working condition adaptability: The cageless design increases the number of rollers, further enhancing load-bearing capacity, making it suitable for harsh environments such as dusty and muddy conditions in construction machinery, offering strong stability.

Installation and maintenance points: Before installation, clean the shaft and bearing housing, removing burrs and oil stains. Check the bearing for cracks and ensure the rollers are not stuck. Use hot mounting (oil temperature 80-100℃) or cold pressing method for installation, ensuring the bearing end face fits snugly against the positioning surface, with axial clearance controlled at 0.05-0.1 mm.

Lubrication Specifications: For grease lubrication, the filling amount should be 1/3 to 1/2 of the bearing cavity volume, with grease replenishment/replacement every 1500 hours; for oil lubrication, maintain an oil pressure of 0.1-0.3 MPa and an oil temperature ≤80℃.

Maintenance Cycle: Check bearing clearance and wear every 2000 hours. If the clearance exceeds 0.15 mm or pitting or peeling appears on the surface, replace immediately. Prevent bearings from lacking lubrication, overloading, or allowing foreign objects to enter, thus preventing premature failure.