CAT 090-9289 RING-RETAIN

CAT 090-9289 (0909289) is a Caterpillar genuine elastic retaining ring (external retaining spring) for construction machinery axles. It is compatible with the hinge points of the working devices of 259D3/279D3 skid steer loaders and 906H/907H mini excavators. It is used in conjunction with 089-0822/089-7694 bushings, 088-6188 bearings, and 090-5965 retainers to axially lock the pin and bushing, preventing component movement and ensuring stable operation of the hinged joint. Cat®…

Core Parameters and Information

Item Details
Part Model: CAT 090-9289 (0909289) Shaft Elastic Retaining Ring

Type: Elastic retaining ring for construction machinery shafts (external snap ring, radial mounting, elastic locking)

Material: 65Mn spring steel, galvanized and passivated surface, corrosion resistant, excellent elasticity and toughness

Key Dimensions: Fitting pin φ70mm, groove diameter φ68mm, free diameter φ70mm, thickness 2.0mm, opening width 6mm, fitting mounting hole φ75mm, tolerance GB/T 894.1 – 2017

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

Matching Relationship: Compatible with 089-0822/089-7694 bushings, 088-6188 bearings, 090-5965 Matching retainer and 087-1873 dust ring, used for axial positioning of articulated joint assemblies.

Suitable for:
Suitable parts: Articulation points of skid steer loaders, mini excavators (boom and frame, connecting rod and boom, etc.). Installed in the pin groove, it axially locks bushings, bearings, and other components to prevent axial movement during operation, avoid abnormal wear and impact, and ensure stable operation of the articulated joint.

Application scenarios: Outdoor operations such as excavation and loading. Quick installation and reliable locking are achieved through the elastic deformation of spring steel. Suitable for high-frequency vibration and variable load conditions, it is impact-resistant and fatigue-resistant, suitable for harsh working conditions, extends component life, and reduces maintenance costs.

Core functions: Elastic locking, axial positioning, prevention of component movement, suitability for high-frequency vibration and variable load conditions, ensuring stable operation of articulated joints, simplifying installation and disassembly processes, and improving maintenance efficiency.

Installation and Maintenance Points

Installation: Clean the pin groove, use snap ring pliers to open the retaining ring, and smoothly place it into the groove, ensuring it is fully embedded without any misalignment; install it in conjunction with the bushing, bearing, and dust ring to ensure no axial movement and smooth, unobstructed operation.

Maintenance: Check the retaining ring for deformation, breakage, or corrosion every 200 hours; replace it immediately if any abnormalities are found to prevent parts from falling off and causing malfunctions.

Replacement: Remove the old retaining ring with snap ring pliers and inspect the groove for damage; verify the dimensions of the new retaining ring before installation, and test the hinge area after embedding to confirm there are no abnormal noises or axial movement.