CAT 085-8827 BUSHING

CAT 085-8827 (0858827) is a Caterpillar genuine construction machinery articulated wear-resistant bushing (sleeve), compatible with 259D3/279D3 skid steer loaders and 906H/907H mini excavators. It is used at articulation points such as the boom and frame, and the connecting rod and boom, reducing friction and wear between the pin and mounting hole, absorbing impact, reducing noise, and ensuring smooth operation of the working device.

Core Parameters and Information

Item Details
Part Model: CAT 085-8827 (0858827) Articulated Wear-Resistant Bushing

Type: Wear-Resistant Bushing for Articulated Joints in Engineering Machinery (Interference Fit)

Material: Alloy steel, surface hardened (HRC58-62), hard chrome plated inner hole for friction reduction

Key Dimensions: Inner diameter 48mm, outer diameter 62mm, length 55mm, wall thickness 7mm, chamfer 1×45°

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

Matching Relationship: Used with 085-8362 retainer, 085-6723 bearing

Compatibility and Application

Compatible Parts: 259D3/279D3 skid steer loaders, 906H/907H This bushing provides wear-resistant support for the boom joint and connecting rod hinge points of a mini excavator’s working device, absorbing operational impacts, reducing noise, and adapting to frequent load-changing conditions such as excavation and loading.

Application Scenarios: Suitable for frequent load-changing operations such as excavation and loading, ensuring smooth operation of the boom joint and connecting rod hinge points, preventing component loosening and wear, reducing the risk of failure, and improving operational safety and reliability.

Compatible with: Uses with 085-8362 retainer and 085-6723 bearing. The bushing provides wear-resistant support, and the retainer provides axial positioning of the bearing, ensuring stable component operation.

Installation and Maintenance Points:

Installation: Clean the mounting holes and check dimensional tolerances; press the bushing in using a cold-press/hot-fit process to ensure a reliable interference fit; after installation, the inner hole should be coaxial with the pin, the surface should be free of scratches and burrs, and the fit clearance should meet requirements.

Maintenance: Inspect the bushing for wear, loosening, and deformation every 200 hours. Replace immediately if the inner bore wear exceeds 0.5mm or cracks appear. Avoid water and dust corrosion to prevent rust from affecting the fit accuracy.

Replacement: Use a special puller to remove the old bushing and inspect the mounting hole. Before installing the new bushing, verify the dimensions to ensure a tight fit with the mounting hole and normal clearance between the inner bore and the pin.