CAT 526-3040 BEARING-SLV-GD

CAT 526-3040 (5263040) is a Caterpillar original YM self-lubricating sleeve bearing (straight sleeve), suitable for gearbox shift fork shafts and steering knuckle kingpin supports. The following is purely precise information (no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 526-3040 YM Self-lubricating Sleeve Bearing (Straight Sleeve)

Part Type: Multi-layer composite self-lubricating sleeve bearing, inner wall PTFE + bronze fiber composite layer, outer wall steel backing, suitable for low-speed sliding and radial load conditions, maintenance-free self-lubricating, withstands radial load + slight impact, suitable for gearbox shift fork shafts and steering knuckle kingpins

Material: Steel backing Q235B (quenched and tempered HB180-200), middle layer bronze powder sintered (thickness 0.3-0.5mm), inner liner PTFE + glass fiber composite layer (thickness 0.2-0.3mm), no oil grooves on the surface, chamfered ends 1×45°, Salt spray ≥96h

Key Dimensions: Inner diameter 38.10mm (1.5000in), outer diameter 44.45mm (1.7500in), total length 50.80mm (2.0000in), wall thickness 3.175mm, chamfer 1×45°, fit tolerance H7, compatible shaft diameter φ38h7

Structural Features: Oil-free self-lubricating, steel back interference fit, composite liner for low friction, allows ≤5° slight misalignment, rated radial dynamic load 45kN, rated static load 110kN, coefficient of friction μ≤0.06 (dry state), limiting speed 300rpm

Compatible Structures: Gearbox shift fork shaft support, steering knuckle kingpin bushing, used with 526-3041 retaining ring and 526-3042 spacer, installation interference 0.015-0.025mm

Applicable Working Conditions: Engineering machinery gearboxes Steering system, low-speed sliding (≤50 times/min), medium load (≤30kN), suitable for impact loads, operating temperature -30℃ to 120℃
Compatible models and assemblies:
Loaders: CAT 938M, 950M, 962M (gearbox shift fork shaft assembly)
Graders: CAT 140M, 160M (steering knuckle kingpin bushing assembly)
Compatible assemblies: 950M gearbox shift fork shaft support assembly, 140M steering knuckle kingpin 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 0.015-0.025mm. 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, the steel backing is free of cracks, both ends are intact chamfered, the inner diameter roundness is ≤0.01mm, and the surface roughness Ra≤0.8μm.

After assembly, the clearance between the shaft and bushing should be 0.04-0.08mm, with smooth sliding, radial runout ≤0.05mm, and no abnormal noise. The clearance should be checked periodically (every 1500 working hours).

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.