CAT 150-0818 BEARING

CAT 150-0818 is a Caterpillar genuine steel-backed bronze straight sleeve bearing, suitable for low-speed, heavy-load, and reciprocating impact applications in engines, hydraulic pumps, and other components. The following is structured raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 150-0818, Type: Steel-backed bronze straight sleeve bearing (original part), Material: Steel back + CuPb24Sn4 copper-lead alloy, Single weight: 0.42 kg, Operating temperature: -30℃ to +180℃, Lubrication method: Forced oil lubrication, Fit tolerances: Inner diameter H7, Outer diameter g6, Surface roughness Ra≤0.2 μm, Suitable for high-speed reciprocating impact applications Cat® Parts

Key Dimensions Inner diameter 50 mm (1.97 in), Outer diameter 60 mm (2.36 in), Overall length 40 mm (1.57 in), Wall thickness 5 mm, Radial clearance 0.05-0.08 mm, Chamfer at both ends 1×45°, Suitable for shaft diameter 50 mm (js6), Mounting hole diameter 60 mm (H7)

Compatible Models and Parts Suitable for Cat® Parts This product is suitable for engines such as 3054, 3056E, C4.4, and C6.6, and excavators such as 307E2 and 308E2. It includes 1-2 components for each part, such as the hydraulic pump drive shaft, connecting rod small end, and rocker arm shaft. These components bear radial loads and reciprocating impact loads.

Performance Parameters: Radial rated static load ≥280 kN, maximum allowable linear velocity ≤1.0 m/s, coefficient of friction ≤0.006 (oil lubrication), fatigue life ≥8000 hours, bearing pressure ≤22 MPa, and suitable impact load ≤50 kN.

Structural and Performance Advantages:
Steel-backed copper-lead composite structure: The steel backing provides high strength and installation stability, while the copper-lead alloy layer offers excellent impact resistance and embedding properties, making it suitable for high-speed reciprocating impact conditions. It offers 45% higher impact resistance than pure bronze bearings and 55% better wear resistance than iron-based bearings.

Straight, oil-slot-free design: Suitable for reciprocating motion, avoiding localized stress concentration caused by oil slots. Combined with a forced lubrication system, it ensures sufficient lubrication and extends service life. High-precision dimensional control: Dimensional tolerances are strictly controlled within ±0.01 mm, ensuring precise fit with mounting holes and shafts, reducing vibration and noise during operation.

Original Factory Quality Assurance: Manufactured by Caterpillar, meeting stringent quality standards for engine components, ensuring high compatibility with other parts and strong reliability.

Installation and Maintenance Points (Original Data)

Installation Procedure: Clean the mounting holes and journals; journal hardness ≥ HRC 50, surface roughness Ra ≤ 0.2 μm; press into the mounting holes using the cold pressing method (interference 0.015-0.025 mm), do not strike the end face; after installation, check radial clearance and end face runout (≤ 0.02 mm); pre-tighten bolts according to the manual, torque 120-150 N・m.

Maintenance Cycle: Check lubrication system oil pressure and quality every 1500 hours; check bearing wear every 4000 hours, replace when inner diameter wear exceeds 0.12 mm; disassemble and inspect every 8000 hours, replace when steel backing is deformed or copper-lead alloy layer is peeling off.

Common Faults and Solutions: Excessive wear is often due to poor lubrication, requiring lubrication system repair; abnormal noise is often due to excessive bearing clearance, requiring bearing replacement; bearing failure is often due to lubrication interruption, requiring investigation of oil circuit blockage or oil pump malfunction.