CAT 2G-4168 29.5mm Thick Adjusting Ring

CAT 2G-4168 is a Caterpillar genuine external retaining ring for shafts (open-type elastic retaining ring), suitable for positioning the shaft ends of components such as engines and transmissions to prevent axial movement of parts. The following are precise original part information:

Core Technical Parameters
Item Details
Part Model: CAT 2G-4168 (2G4168) External Retaining Ring for Shafts (Open-type Elastic Retaining Ring), Weight: Approx. 0.05 kg (0.11 lb), Suitable for axial positioning of shaft ends

Core Material: 65Mn spring steel, integrally quenched and tempered, hardness HRC 42-48, surface galvanized and passivated for rust prevention, suitable for vibration and impact conditions in engineering machinery

Key Dimensions: Shaft diameter: 38.1 mm (1.50 in), Free outer diameter: 45.2 mm (1.78 in), Groove diameter: 42.5 mm (1.67 in), Groove width: 1.5 mm (0.06 in), Thickness: 1.2 mm mm (0.05 in), standard open-type external snap ring structure.

Structural Features: Open-type elastic design; during assembly, it can radially retract and embed into the groove on the shaft. Used to fix bearings, gears, bushings, etc., preventing axial movement and adapting to positioning requirements under dynamic working conditions.

Compatible Models: Compatible with CAT 3306/3406C diesel engines (crankshaft/camshaft end positioning), D6D/D6E bulldozers, 950G/962G loaders (gearbox input/output shaft positioning snap rings).

Accessories: Compatible with bearings and bushings with a shaft diameter of 38.1 mm; matching installation tool: CAT 1U-7360 snap ring pliers.

Core Functions and Installation Points:

Axial Positioning: Used to fix components within the shaft end groove, preventing axial movement of bearings, gears, etc. during operation, ensuring the stability of transmission system components and avoiding abnormal wear or failure.

Installation Specifications: Clean the grooves on the shaft and the surface of the retaining circlip, removing oil and burrs. Check the groove dimensions and retaining circlip fit.

Use dedicated retaining circlip pliers (CAT 1U-7360) to radially retract the retaining circlip and insert it into the groove. Do not pry it open. Ensure the retaining circlip is fully inserted and without deformation.

After installation, check the fit between the retaining circlip and the groove to ensure there is no looseness and no axial movement or play in the components.

Maintenance Recommendations: Each time you disassemble a component, check the retaining circlip’s elasticity and surface condition. If deformation, cracks, or corrosion are found, replace it immediately with an original CAT circlip.

When replacing, always use the same model CAT 2G-4168 original part to avoid mismatched dimensions or materials that could cause positioning failure.