CAT 535-6282 85mm Inner Diameter Bushing

CAT 535-6282 is a Caterpillar genuine straight-sleeve bushing (SEM) with a steel backing. It is suitable for hinged parts such as booms, rocker arms, and linkages on loaders, graders, etc., providing low-friction support and wear-resistant protection, and withstanding radial loads and oscillating impacts. The following is precise original part information for Cat®…:

Core Technical Parameters
Item Details
Part Model: CAT 535-6282 (5356282) SEM Straight-Sleeve Bushing, weighing approximately 0.9 kg (1.98 lb), flangeless straight-sleeve structure, with internal lubrication grooves and grease holes, suitable for hinged parts requiring periodic grease lubrication.

Core Material: Steel backing (low carbon steel, surface electrophoretic corrosion protection) + composite wear-resistant layer (copper-lead alloy / PTFE self-lubricating material, wear resistance coefficient 0.05-0.1, suitable for boundary lubrication conditions), impact resistant, anti-seize.

Key Dimensions: Inner diameter 60 70 mm (2.36 in), outer diameter 70 mm (2.76 in), length 60 mm (2.36 in), wall thickness 5 mm, inner hole roughness Ra≤0.8 μm, compatible shaft diameter tolerance h7, mating hole tolerance H7
Lubrication Design: Axial lubrication groove in the inner hole + radial oil injection hole, compatible with grease gun for regular application of lithium-based grease, ensuring uniform lubrication during articulation and reducing friction and wear.
Compatible Models: CAT 906H/907H loaders (boom and frame articulation), 120M/140M graders (blade linkage), 420F mini loaders (steering rocker arm), and other small and medium-sized construction machinery.
Accessories: Compatible pins 8T-4127, seals 6V-7853, grease nipples 1U-8878, mounting blocks 456-1559
Core Functions and Structural Features: Low friction and wear resistance: steel backing + The composite wear-resistant layer structure features a low coefficient of friction, making it suitable for high-frequency oscillation and low-speed, heavy-load conditions at hinged joints. This reduces wear on the pins and mounting holes, extending component lifespan.

Precise lubrication fit: The internal lubrication groove and oil injection hole design allows for periodic grease replenishment via a grease nipple, forming an oil film to isolate the friction surface, reducing the risk of dry friction and making it suitable for long-term use in harsh outdoor conditions.

High fit accuracy: Inner diameter/outer diameter/length dimensional tolerances are controlled within ±0.02 mm, with an interference fit (H7/h7) with the pins and mounting holes, ensuring no looseness or wobble after installation and guaranteeing smooth and precise hinge operation.

Impact and corrosion resistance: The steel backing structure provides strong impact resistance, and the surface electrophoretic treatment resists corrosion from moisture and dust, making it suitable for complex operating environments in engineering machinery.