CAT 534-6392 80mm Inner Diameter Bushing

CAT 534-6392 (5346392) is a Caterpillar original SEM straight-tube self-lubricating bushing, suitable for connecting rod hinges and balance beam supports in tracked loaders, bulldozers, and other equipment. The following is purely accurate information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 534-6392 SEM Straight-tube Self-lubricating Bushing

Part Type: Steel backing – Bronze powder sintered – Self-lubricating composite bushing, suitable for low-speed oscillation and radial load conditions in the hinge parts of engineering machinery, maintenance-free self-lubricating, withstands radial load + slight impact, suitable for balance beams and connecting rod hinges

Material: Steel backing Q235B (quenched and tempered HB180-200), middle layer bronze powder sintered (thickness 0.3-0.5mm), inner lining PTFE + bronze fiber composite layer (thickness 0.2-0.3mm), chamfered ends 1.5×45°, salt spray ≥96h

Key Dimensions Inner diameter 50.80mm (2.0000in), outer diameter 63.50mm (2.5000in), total length 76.20mm (3.0000in), wall thickness 6.35mm, chamfer 1.5×45°, fit tolerance H7, compatible shaft diameter φ50h7

Structural features: Oil-free self-lubricating, steel back interference fit, composite inner lining for low friction, allows ≤5° slight misalignment, rated radial dynamic load 60kN, rated static load 130kN, coefficient of friction μ≤0.06 (dry state), limiting speed 250rpm

Compatible structures: Balance beam bushing, connecting rod hinge bushing, used with 534-6393 retaining rings and 534-6394 spacers, installation interference 0.020-0.030mm

Applicable working conditions: Articulated parts of engineering machinery, low-speed oscillation (≤50 times) /min), medium load (≤45kN), suitable for impact loads, operating temperature -30℃ to 120℃
Compatible Models and Assemblies
Loaders: CAT 950M, 962M, 980M (balance beam bushing assembly)
Bulldozers: CAT D6N, D7E (connecting rod hinge bushing assembly)
Gradeers: CAT 140M, 160M (steering link hinge assembly)
Compatible Assemblies: 950M balance beam bushing assembly, D6N connecting rod hinge bushing assembly
Installation and Fitting Points
The seat hole should be clean and free of burrs. Use a special press for cold pressing installation. The interference fit should be 0.020-0.030mm. Do not strike the end face to avoid deformation of the steel backing and liner detachment.

Before installation, check that the liner is free of scratches and the steel backing is free of cracks. The inner diameter roundness should be ≤0.01mm, and the surface roughness Ra ≤0.8μm.

After assembly, the clearance between the shaft and bushing should be 0.05-0.10mm, with no jamming during oscillation, radial runout ≤0.05mm, and no abnormal noise.

Disassembly should be done by pulling out the bushing with a puller. Prying the steel backing is prohibited. When replacing, replace the bushing + retaining ring + spacer as a complete set to ensure proper fit.