CAT 536-0695 45mm Inner Diameter Bushing

CAT 536-0695 is a Caterpillar original steel-backed composite SEM bushing, suitable for low-speed, heavy-load components such as articulations and suspensions in engineering machinery. The following is the structured original data, excluding replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 536-0695, Type: Steel-backed composite layer SEM bushing (straight type without oil groove), Material: Carbon steel back + CuPb24Sn4 copper-lead alloy composite layer, Single weight: 0.85 kg, Operating temperature: -30℃ to +180℃, Lubrication method: Forced oil lubrication/grease lubrication, Fit tolerance: Inner diameter H7, Outer diameter g6, Surface roughness Ra≤0.2 μm, Suitable for low-speed heavy-load, oscillating impact conditions

Key Dimensions Inner diameter 80 mm (3.15 in), Outer diameter 95 mm (3.74 in), Total length 80 mm (3.15 in), Wall thickness 7.5 mm, Radial clearance 0.07-0.11 mm, Chamfer at both ends 1×45°, Suitable shaft diameter 80 mm (js6), Mounting hole diameter 95 mm (H7)

Suitable Models and Locations Suitable for Cat For 120 GC and 140 GC graders, and 320, 323, and 326 series excavators, this product is suitable for the bucket linkage, boom hinge, and loader steering knuckle, among other articulated parts. Each part requires 1-2 pieces to withstand radial and oscillating impact loads.

Performance Parameters: Radial rated static load ≥350 kN, maximum permissible linear velocity ≤2 m/s, coefficient of friction ≤0.006 (oil lubrication), fatigue life ≥10000 hours, bearing pressure ≤28 MPa, and suitable impact load ≤70 kN.

Structural and Performance Advantages:
Steel-backed composite layer structure: The carbon steel backing provides high strength and installation stability, while the copper-lead alloy composite layer offers excellent impact resistance and embedding properties, suitable for low-speed oscillating impact conditions at articulated parts. It offers 40% higher impact resistance than pure bronze bushings and 60% better wear resistance than iron-based bushings.

Oil-free straight design: Suitable for oscillating motion, avoiding localized stress concentration caused by oil grooves. Combined with a 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 pins, reducing vibration and wear during operation.

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

Installation and Maintenance Points (Original Data)

Installation Procedure: Clean the mounting holes and pins; pin hardness ≥ HRC 50, surface roughness Ra ≤ 0.2 μm; cold press into the mounting holes (interference 0.020-0.035 mm), do not strike the end face; after installation, check radial clearance and end face runout (≤ 0.02 mm); pre-tighten the fixing bolts according to the manual, torque 180-220 N・m.

Maintenance Cycle: Check lubrication system oil pressure/grease level every 1000 hours; check bushing wear every 3000 hours, replace when inner diameter wear exceeds 0.15 mm; disassemble and inspect every 8000 hours, replace when steel backing is deformed or composite layer peels off.

Common Faults and Solutions: Excessive wear is often due to poor lubrication, requiring lubrication system repair; excessive clearance can cause abnormal noise, requiring bushing replacement; loosening is often due to insufficient interference fit, requiring re-pressing or bushing replacement.