CAT 587-5664 BUSHING

CAT 587-5664 is a heavy-duty seamless steel bushing commonly used in Caterpillar construction machinery. It is fitted to the pin hinge joints of the traveling mechanism and working devices to withstand radial heavy loads and impact loads. The following is raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 587-5664, Type: Seamless steel bushing, Material: Chromium-molybdenum alloy steel (4140/4340), Single weight: 2.36 kg (5.20 lbs), Operating temperature: -40℃ to +150℃, Radial load capacity: ≥280 kN, Surface treatment: Carburizing and quenching + oxidation and blackening, Corrosion resistance: ≥120 hours salt spray, Hardness: HRC 58-62, Elastic modulus: 206 GPa, Coefficient of thermal expansion: 11.7×10^-6/℃

Key Dimensions (Metric / Imperial)
Outer diameter: 76.2 mm (3.000 in), Inner diameter: 57.15 mm (2.250 in), Total length: 101.6 mm (4.000 in), Wall thickness: 9.525 mm (0.375 in), Chamfer at both ends: C2 mm, Outer diameter tolerance: + 0.020/-0.010 mm, Inner diameter tolerance + 0.015/-0.005 mm, Length tolerance + 0.15/-0.08 mm, Roundness ≤0.012 mm, Surface roughness Ra≤0.8 μm

Performance Parameters: Fitting bore diameter 76.2 mm (H7 tolerance), fitting shaft diameter 57.15 mm, Installation interference 0.18-0.28 mm, Maximum permissible speed 800 rpm, Coefficient of friction ≤0.005 (lubricated condition), Breaking load ≥350 kN, Wear life ≥5000 hours (standard operating conditions)

Structure and Fitting Characteristics: Seamless heavy-duty structure: Adopting a seamless rolling process, with no welds or weak points, suitable for heavy-duty parts such as the travel mechanism pins and boom/stick hinges of bulldozers, loaders, and excavators. It can withstand continuous impact and vibration loads, avoiding local deformation and cracking.

High-precision fit design: High precision in the fit between the inner diameter and shaft diameter, and the outer diameter and hole diameter, with a fit clearance ≤0.05 mm. This ensures the motion accuracy of the hinged parts, reduces relative wear between the pins and bushings, and extends the service life of components.

Wear-resistant strengthening treatment: Carburized and quenched layer depth 0.8-1.2 mm, surface hardness HRC 58-62, core hardness HRC 30-35, balancing surface wear resistance and core toughness, suitable for high-intensity operation requirements under harsh conditions.

Compatible models and application scenarios:

Bulldozers: Track frame pins and balance beam hinge points of models D6R, D7R, D8R, etc., suitable for heavy-load and impact conditions in bulldozing operations.

Loaders: Boom pins and rocker arm hinge points of models 980K, 988K, etc., suitable for frequent material loading and unloading movements and heavy-load requirements.

Excavators: 349D2, 390F and other models, with boom pins and bucket linkage hinges adapted to the vibration and impact conditions of excavation operations.