Description
CAT 6Y-2257 Radiator Guard Retainer
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The CAT 6Y-2257 is a Caterpillar original shaft retainer with a flexible retaining ring (a type of transmission component positioning fastener). It is compatible with the planetary carrier of the swing gearbox and the differential shaft end of the drive axle of Cat 320D2/323D2 excavators and 966H/K loaders. It is used to fix the axial position of bearings/gears and prevent movement during operation. The following is the original data and does not include information on replacement parts.
Core Technical Parameters (Raw Data)
Item Details
Basic Attributes
Model: 6Y-2257; Type: Shaft Elastic Retaining Ring (External Snapping Ring); Material: 65Mn Spring Steel (Quenched and Tempered, Hardness HRC 42-48); Surface Treatment: Zinc Plating and Passivation (Color Zinc); Single Weight: 0.085 kg; Working Temperature: -40℃ to +150℃; Rated Axial Load: ≥8 kN; Applicable Shaft Diameter: φ90 mm; Groove Width: 2.5 mm; Groove Depth: 1.2 mm
Key Dimensions
Inner Diameter: 88.5 mm (Tolerance -0.10/-0.20 mm); Outer Diameter: 98 mm (Tolerance +0.15/+0.05 mm); Thickness: 2.5 mm (Tolerance ±0.10 mm); Opening Width: 5 mm; Opening Gap: 1.5 mm; Ring Body Diameter: 1.8 mm; Snapping Ring Free State Outer Diameter: 100 mm; Clamping Force After Installation: ≥5 kN
Performance Parameters Elastic limit ≥1100 MPa, tensile strength ≥1300 MPa, yield strength ≥900 MPa, elongation ≥5%, impact toughness ≥15 J/cm², corrosion resistance: no red rust after neutral salt spray test ≥48 hours, axial movement after assembly ≤0.05 mm.
Structural and Performance Advantages
Spring Steel Material: 65Mn steel, quenched and tempered, with good elasticity and high strength, suitable for equipment vibration conditions, and not easily deformed by repeated loading and unloading.
Zinc plating and passivation treatment: Color zinc coating enhances corrosion resistance, suitable for dusty and humid operating environments of engineering machinery, and extends service life.
Elastic retaining ring structure: Open design facilitates installation and disassembly. After installation, it elastically grips the shaft groove to achieve axial positioning of bearings/gears and other components, preventing movement during operation.
Precise dimensional tolerances: Suitable for φ90 mm shaft diameter, groove width 2.5 mm, small axial clearance after installation, ensuring the positioning accuracy of transmission components.
Installation and Maintenance Points (Original Data)
Installation: Clean the shaft groove (free of burrs/oil stains). Use snap ring pliers to open the retaining ring, insert it into the shaft groove, and ensure a complete fit. Check that the retaining ring is not twisted and that the opening gap is uniform. After installation, axial movement should be ≤0.05 mm. Do not strike the retaining ring with hard objects.
Maintenance: Check the condition of the retaining ring every 1000 hours (no deformation, no rust, no breakage). Replace the retaining ring every 5000 hours. Avoid overload operation (≤110% of rated axial load) to prevent fatigue failure of the retaining ring.
Troubleshooting: If the retaining ring is deformed, causing excessive axial movement, replace the retaining ring. If rust causes jamming, clean and replace the retaining ring. If the retaining ring is broken, stop the machine immediately, replace the retaining ring, and inspect related components.
