CAT 086-8559 RETAINER

CAT 086-8559 (0868559) is a Caterpillar genuine construction machinery elastic retainer (circlip), compatible with 259D3/279D3 skid steer loaders and 906H/907H mini excavators. It is used at the hinge points of the working device to provide axial positioning for 086-3524 needle roller bearings and 085-8823/085-8827 bushings, preventing axial movement of components and ensuring stable operation. Cat®…

Core Parameters and Information

Item Details
Part Model: CAT 086-8559 (0868559) Elastic Retaining Ring Type Fixer

Type: Elastic retaining ring (circlip) for engineering machinery articulation points

Material: 65Mn spring steel, galvanized and passivated for rust prevention

Key Dimensions: Inner diameter 55mm, outer diameter 68mm, thickness 3mm, opening width 6mm, matching circlip groove diameter 60mm

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

Matching Relationship: Compatible with 086-3524 needle roller bearings, 085-8823/085-8827 Bushing for axial positioning of articulation point assemblies

Suitable for:
Suitable parts: Articulation points of skid steer loaders, mini excavator booms and frames, connecting rods and booms, etc., bearing radial loads, suitable for frequent load-changing operations.

Application scenarios: For frequent load-changing operations such as excavation and loading, ensuring stable operation of articulation points, preventing component loosening and wear, reducing the risk of failure, and improving operational safety and reliability.

Compatible with: Used with 086-3524 needle roller bearings and 085-8823/085-8827 bushings. The retainer provides axial positioning of the bearing, and the bushing provides wear-resistant support, ensuring stable operation of the components.

Installation and maintenance points:
Installation: Clean the circlip groove and check the dimensions; use circlip pliers to insert the retainer into the circlip groove, ensuring it is fully seated and without looseness; after installation, it should fit snugly against the bearing end face without gaps to prevent axial movement of the bearing.

Maintenance: Check the retainer for deformation, breakage, and corrosion every 200 hours, and replace it immediately if any problems are found; avoid heavy impacts that could cause the retainer to detach and prevent component damage.

Replacement: Use snap ring pliers to remove the old retainer and check the snap ring groove for damage; before installing the new retainer, verify the dimensions to ensure a tight fit with the snap ring groove without any looseness.