CAT 088-4114 BUSHING

CAT 088-4114 (0884114) is a Caterpillar genuine bimetallic composite straight-tube bushing for construction machinery. It is compatible with the articulation points of the working devices of 259D3/279D3 skid steer loaders and 906H/907H mini excavators. It is used in conjunction with 088-2972 bearings, 088-2526 retainers, and 087-1873 dust rings for wear-resistant support at articulation points, suitable for high-frequency vibration and variable load conditions, ensuring smooth operation.

Core Parameters and Information

Item Details
Part Model: CAT 088-4114 (0884114) Bimetallic Composite Straight Cylindrical Bushing

Type: Bimetallic Wear-Resistant Bushing for Engineering Machinery Hinge Points

Material: Low-carbon steel backing + copper-lead alloy (CuPb24Sn4) composite layer, tin-plated surface, hardness HB80-100, wear-resistant and high load-bearing capacity

Key Dimensions: Inner diameter 60mm, outer diameter 70mm, length 45mm, wall thickness 5mm, tolerance H7/g6, compatible with φ60mm pins

Compatible Models: CAT 259D3/279D3 skid steer loaders, 906H/907H mini excavators

Matching Relationship: Compatible with 088-2972 radial ball bearings, 088-2526 retainers, 087-1873 Dust ring accessories for articulated joint assemblies.

Suitable for:
Skidney steer loaders, mini excavators, boom and frame, connecting rods and boom, etc., providing wear-resistant support, reducing friction between pins and bearings, and adapting to high-frequency vibration and variable load conditions.

Application scenarios: Outdoor operations such as excavation and loading, reducing increased clearance and abnormal noise at articulated joints due to friction, extending component lifespan, and reducing maintenance costs.

Core functions: Steel backing enhances structural strength and withstands radial loads; copper-lead alloy layer provides self-lubrication, adapting to boundary lubrication conditions, reducing the coefficient of friction, and ensuring stable operation of articulated joints.

Installation and maintenance points:
Installation: Clean the mounting holes and bushings, and use a special tool to press them in smoothly, ensuring a tight fit with the hole wall; install in conjunction with bearings, retainers, and dust rings to ensure coaxiality, no axial movement, and smooth, unobstructed operation.

Maintenance: Inspect the bushings every 200 hours for wear, deformation, cracks, or loosening; regularly add CAT DEO special grease, and replace promptly if abnormal to prevent excessive clearance from damaging components.

Replacement: Remove the old bushing and inspect the mounting holes and pins for damage; verify the dimensions before installing the new bushing, and test the hinge area after press-fitting to confirm there are no abnormal noises or axial movement.