CAT 146-6768 RETAINER

CAT 146-6768 is a Caterpillar genuine axle retaining ring (external retaining ring/axle clip), suitable for positioning and fixing the shaft end of components such as engines and transmission systems. The following are precise original factory specifications and application information, excluding replacement parts (Cat®…).

Core Technical Parameters

Item Details
Part Model: CAT 146-6768 (Shaft Elastic Retaining Ring / External Circlip)

Material: 65Mn spring steel, quenched and tempered, hardness 48–52 HRC; galvanized and passivated surface, no white rust after 96 hours of salt spray testing, strong corrosion resistance Cat®…

Key Dimensions: Inner diameter 38 mm (1.496 in), outer diameter 45 mm (1.772 in), thickness 1.5 mm (0.059 in), opening width 3.2 mm, groove width matching 1.6 mm, groove diameter 38.2 mm

Performance Parameters: Radial elastic force ≥ 120 N, ultimate tensile strength 1050 MPa, yield strength 900 MPa, operating temperature -40℃ ~ +150℃, single installation deformation ≤ 0.08 mm

Unit Weight: Approx. 0.018 kg (0.0397 lbs)

Tolerance Standards Inner diameter tolerance ±0.05 mm, thickness tolerance ±0.03 mm, opening size tolerance ±0.1 mm, surface roughness Ra ≤ 0.8 μm

Surface Treatment: Zinc plating and passivation to improve corrosion resistance and suitability for harsh working conditions in engineering machinery, such as humid and dusty environments (Cat®)…

Structure and Core Features:

Elastic retaining ring structure: Utilizing an open design, it relies on its own elasticity to engage within the annular groove of the shaft, achieving axial positioning and fixation of parts on the shaft (such as bearings, gears, sleeves, etc.) and preventing axial movement.

High elasticity and high strength: Made of 65Mn spring steel, professionally heat-treated, possessing excellent elasticity and strength, capable of withstanding frequent assembly and vibration conditions, and not easily deformed or broken.

Precise fit: Strict dimensional tolerances and groove diameter matching design ensure a tight fit with the shaft groove after installation, precise positioning, reliable axial fixation, and stable operation of the component.

Corrosion-resistant design: Galvanized passivation surface treatment effectively resists corrosive media such as moisture and dust in the working environment of construction machinery, extending service life and reducing maintenance frequency.

Compatible Models and Application Scenarios

Compatible Equipment: CAT 305.5E2/306E2 excavators, 246D/249D skid steer loaders, C4.4/C6.6 engines, 938M loaders, etc.

Core Applications: Used for axial positioning and fixing of bearings, gears, gaskets, and other components in engine camshafts, crankshaft front/rear ends, transmission system drive shafts, gearbox gear shafts, and hydraulic pump shafts, preventing axial movement of components during operation, ensuring transmission accuracy and system stability. Suitable for medium-light to medium-heavy load working conditions.