CAT 457-4463 Stud External Retainer

CAT 457-4463 is a Caterpillar genuine axle retainer with a spring retainer ring (circlip retainer). It is used for axial positioning of pins, bearings, or hydraulic components in excavators and loaders to prevent movement of parts and is suitable for heavy-duty vibration conditions. The following is the core information.

Core Technical Parameters

Item Details
Part Model: CAT 457-4463 (Shaft Elastic Retaining Ring, 65Mn Spring Steel, Stamped, Blackened Surface, with Mounting Slot and Opening)

Material: 65Mn Spring Steel, Thickness: 1.5 mm, Hardness: HRC 42-48, Tensile Strength: ≥ 1200 MPa, Elastic Limit: ≥ 800 MPa, Suitable for -40℃ to +150℃ Operating Conditions

Key Dimensions: Inner Diameter: 45 mm (1.7717 in), Outer Diameter: 52 mm (2.0472 in), Opening Width: 3 mm, Mounting Slot Diameter: 47 mm (Suitable for Shaft Slot Size)

Unit Weight: Approx. 0.025 kg (0.0551 lbs)

Tolerances and Performance: Inner Diameter Tolerance: -0.10/-0.20 mm, Outer Diameter Tolerance: +0.10/+0.20 mm, Maximum Radial Spring Force: 8 kN, disassembly cycles ≤ 5 times (to avoid fatigue failure)

Core Function: Axial positioning by snapping into the shaft groove, limiting axial movement of bearings, bushings, or pins; suitable for rotating/reciprocating motion components; resistant to impact and vibration; easy to install and disassemble.

Structure and Core Function:

Elastic Positioning Structure: Open design; during installation, snap-fit ​​clamps open the shaft groove, relying on its own elasticity to tightly adhere to the groove wall, providing continuous radial preload and preventing loosening.

Anti-Axial Movement Protection: Suitable for bearing inner rings, bushing end faces, or pin steps, preventing axial displacement of parts and avoiding friction wear, abnormal noise, or jamming; suitable for speeds ≤ 3000 rpm.

Lightweight and High Strength: Spring steel stamping, lightweight (approximately 25g), high strength, saving more space than bolt fixing, suitable for compact installation positions.

Corrosion-Resistant and Durable: Surface oxidation blackening treatment; rust prevention level reaches GB/T 10125 neutral salt spray test for 48 hours with no red rust; suitable for humid and dusty conditions. Compatible Models and Application Scenarios

Compatible Equipment: CAT 320D/323D/326D excavators, 950M/962M loaders, 420F2 backhoe loaders.

Core Application: Installed on boom pins, stick pins, connecting rod bearings, hydraulic cylinder piston rods, etc., to fix bearing inner rings, bushings, or limit rings and prevent axial movement.