CAT 088-4803 RETAINER

CAT 088-4803 (0884803) is a Caterpillar original equipment manufacturer (OEM) flexible retainer for construction machinery (axle flexible retainer), compatible with the working device articulation assembly of 259D3/279D3 skid steer loaders and 906H/907H mini excavators. It is used to lock the axial position of bushings 088-4113/088-4114 and bearings 088-2972, preventing axial movement of components under high-frequency vibration conditions and ensuring stable operation of the articulated joint.

Core Parameters and Information

Item Details
Part Model: CAT 088-4803 (0884803) Shaft Elastic Retaining Ring Type Fixer

Type: Elastic Retaining Ring (Snap Ring) for Shafts in Engineering Machinery

Material: 65Mn spring steel, galvanized and passivated surface, hardness HRC42-48, excellent elasticity and fatigue resistance, corrosion resistant

Key Dimensions: Inner diameter 60mm, outer diameter 70mm, thickness 2.5mm, opening width 5mm, compatible shaft diameter φ60mm, groove width 2.5mm

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

Matching Relationship: Compatible with 088-4113/088-4114 bushings, 088-2972 bearings, 088-2526 This retainer is used for axial positioning of articulated joint assemblies.

Suitable for:
Skidney steer loaders, mini excavators, boom and frame, linkages and boom, and other articulated joint assemblies. Installed in the pin groove, it locks the axial position of bushings and bearings, preventing component movement under high-frequency vibration and avoiding abnormal wear and noise.

Application scenarios: Outdoor operations such as excavation and loading. The elastic tension of the retaining ring enables quick installation and reliable positioning, adapting to frequent load changes and vibration conditions, ensuring stable operation of articulated joints and extending component lifespan.

Core functions: Provides axial positioning, preventing axial movement of bushings and bearings; made of spring steel with galvanized passivation treatment, suitable for harsh working conditions, combining elasticity and corrosion resistance, easy installation and disassembly, reducing maintenance costs (Cat).

Installation and Maintenance Points

Installation: Clean the pin groove and retaining ring. Use snap ring pliers to open the retaining ring and smoothly insert it into the pin groove, ensuring the retaining ring is fully inserted and fits snugly against the bushing and bearing end face without looseness. After installation, check if the retaining ring opening is aligned to ensure uniform elastic tension and no jamming.

Maintenance: Check the retaining ring every 200 hours for deformation, breakage, corrosion, or looseness. Replace it immediately if elastic failure, deformation, or breakage is found to prevent axial movement of components, which could lead to increased clearance and damage at the hinge.

Replacement: Remove the old retaining ring with snap ring pliers and check the pin groove for damage. Before installing the new retaining ring, verify its dimensions to ensure it fits the groove. After installation, test the hinge to confirm there are no abnormal noises or axial movement.