CAT 5V-5498 67.2mm Outer Diameter Universal Joint Retainer

The CAT 5V-5498 is a Caterpillar flexible positioning retainer (circlip/spring pin retainer) used to fix transmission components. It is suitable for the final drive, gearbox, or hydraulic pump of excavators and loaders, and is used to lock the axial position of bearings, gears or bushings to prevent component movement, ensure the stability of the transmission system, and is suitable for medium and high speed and medium load conditions. It has strong resistance to vibration and impact. The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 5V-5498, Type: Elastic Positioning Fixture (Spring + Positioning Pin Integrated Structure), Material: 65Mn Spring Steel (Quenched + Tempered, Hardness HRC 42-48), Surface: Zinc-plated and passivated (Corrosion Resistance ≥ 96 hours Salt Spray Test), Single Weight: Approximately 0.12 kg, Operating Temperature: -40℃ to +150℃, Installation Method: Elastic Clip Connection + Bolt-assisted Fixing, Design Life: ≥ 10000 hours (Normal Operating Conditions)

Key Dimensions
Inner Diameter: 25.4 mm (1 inch, Tolerance 0/+0.01 mm), Outer Diameter: 38.1 mm (1.5 inch, Tolerance 0/-0.015 mm), Total Height: 22.225 mm (0.875 inch, Tolerance 0/-0.08 mm), Spring Opening Width: 8 mm, Positioning Pin Diameter: 6.35 mm mm, snap ring thickness 2.3 mm, locating pin length 12.7 mm, snap ring elastic deformation ≤3 mm (during installation)

Compatible Models and Accessories: Compatible with Cat 320D2 and 336D2 excavators (final drive planetary carrier bearing positioning), 966M loader (transmission gear shaft axial fixation), 349D2 hydraulic pump drive shaft bearing locking, with matching 5V-5499 elastic washers, 366-9274 retaining rings, M8×20 bolts, and flat washers (8 mm)

Performance Parameters: Axial locking force ≥8 kN, radial clamping force ≥5 kN, fatigue life ≥5000 cycles (elastic deformation cycles), impact load resistance ≥12 kN, anti-loosening torque ≥15 N・m (with matching M8 bolts)

Structural and Performance Advantages: 65Mn spring steel material, quenched + Tempered finish, balancing elasticity and rigidity; snap ring design for quick installation and disassembly; precise positioning pin to prevent axial movement of components; suitable for maintenance scenarios requiring frequent disassembly and assembly.

Integrated structure (snap ring + positioning pin) eliminates the risk of loosening after installation; galvanized passivated surface enhances corrosion resistance, suitable for harsh outdoor operating conditions in construction machinery, reducing the risk of failure due to rust.

The flexible snap-fit ​​design absorbs transmission system vibration, reduces impact between components, protects core components such as bearings and gears, improves the overall reliability of the transmission system, and is suitable for medium- and high-speed operation.

Installation and Maintenance Points: Before installation, clean the mounting groove, shaft shoulder, and bearing end face of the retainer, checking for burrs and rust. Measure the diameter of the mounting groove (38.1 mm) to ensure an interference fit of 0.02-0.03 mm between the snap ring and the groove.

Use special snap ring pliers to open the snap ring opening and insert it into the mounting slot, ensuring the locating pin is embedded in the locating hole on the shaft. After installation, check the snap ring’s fit with the slot; ensure there is no looseness or jamming. Tighten the matching bolts to a torque of 15 N·m.

Maintenance: Check the retainer’s elasticity and the condition of the locating pin every 2000 hours. If the snap ring shows plastic deformation or the locating pin is worn, replace it immediately. When installing a new retainer, replace the matching elastic washer to avoid reusing old washers, which could lead to anti-loosening failure.