CAT 476-7242 61mm Outside Diameter Sleeve Bearing

CAT 476-7242 is a Caterpillar Shaft Locating Sleeve used for locating and axially limiting the shaft ends of drive shafts, gearboxes, or hydraulic pumps in excavators, loaders, and other equipment. It prevents component movement, protects bearings and seals, and is a key positioning component in the transmission system (Cat® Parts). The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 476-7242, Type: Shaft Positioning Sleeve (Cylindrical, Keyless), Material: 42CrMo Alloy Steel (Heat Treatment, Hardness HRC32-38), Single Weight: Approx. 0.6 kg, Suitable Temperature: -40℃ to +180℃, Surface Treatment: Black Oxidation (Salt Spray Resistance ≥200 h), Installation Method: Cold Press Fit

Key Dimensions
Inner Diameter: 45 mm (Tolerance H7, 45.00-45.03 mm), Outer Diameter: 60 mm (Tolerance h6, 59.97-60.00 mm), Length: 50 mm (Tolerance ±0.1 mm), Chamfers at both ends: 2×45°, Wall Thickness: 7.5 mm, Interference with Shaft: 0.015-0.025 mm

Compatible Models and Parts
Compatible with Cat 336D2 This product is used for positioning the drive shaft of an excavator’s slewing mechanism, limiting the second shaft of a 966K loader’s gearbox, and fixing the shaft end of a D8T bulldozer’s hydraulic pump. 2-3 pieces are used per unit for axial positioning of gears, bearings, and other components to prevent movement during operation.

Performance Parameters: Rated axial load 80 kN, allowable speed 1500 rpm, impact load 120 kN. Suitable for mineral oil, hydraulic oil, and other media; can operate stably under vibration conditions.

Structural and Performance Advantages:
High-strength positioning: 42CrMo alloy steel with heat treatment, combining strength and toughness, capable of withstanding large axial loads and impacts, ensuring precise component positioning and preventing wear and malfunctions caused by movement.

Precise fit: Strict dimensional tolerances and interference fit design ensure a tight fit with the shaft after installation, without loosening, suitable for high-speed and vibration conditions, ensuring stable operation of the transmission system.

Corrosion and wear resistance: Blackened anodized surface treatment enhances corrosion and wear resistance, suitable for complex working conditions in construction machinery, and extends service life.

Stable Installation: Cylindrical structure, cold-press installation is possible, requiring no additional fasteners, ensuring reliable positioning, high installation efficiency, and suitability for rapid maintenance.

Installation and Maintenance Points: Before installation, clean the shaft and sleeve inner bore to remove oil and impurities, and check for damage. Use cold-press installation, controlling the pressure at 10-12 MPa to ensure the sleeve end face fits snugly against the shaft shoulder without misalignment.

Maintenance Every 2000 Hours: Check the sleeve for looseness or deformation. If the clearance exceeds 0.05 mm or cracks appear on the surface, replace it immediately. Use a dedicated puller during disassembly to avoid damaging the shaft and sleeve.

Prioritize original parts. Aftermarket parts may have insufficient material strength or dimensional inaccuracies, easily leading to positioning failure and damage to transmission components.