CAT 515-4361 SLEEVE

CAT 515-4361 is a Caterpillar heavy-duty wear sleeve used in the boom, stick, and bucket pin parts of excavators/loaders. It is compatible with models such as the 320GC/330GC excavator and the 950M/962M loader, and is responsible for radial positioning of the pin, wear prevention and friction reduction, and clearance compensation. It is suitable for heavy-duty high-frequency oscillating conditions and extends the service life of the pin and hinge structure. The following is the core information:

Core Technical Parameters

Item Details
Part Model CAT 515-4361 (5154361) Heavy-duty wear-resistant steel sleeve, suitable for 60mm diameter pins, used for wear prevention and positioning of hinged structure pins

Material 42CrMo alloy steel, integrally quenched HRC 50-55, surface hardening depth 2-3mm, inner hole chrome plated (plating thickness 0.05-0.1mm), Ra≤0.2μm, resistant to -40℃ to 120℃, suitable for mineral oil/hydraulic oil conditions

Key Dimensions Inner diameter 60mm, outer diameter 75mm, length 80mm, wall thickness 7.5mm, chamfer C1.5, single weight approximately 0.56kg (1.23lbs), suitable for mounting positions with 60mm diameter pins and 75mm mounting hole diameter

Compatible Models CAT Suitable for 320GC/330GC/349GC excavators, 950M/962M/972M loaders, 140M graders, D11T bulldozers, 777F mining trucks, etc., with hinge pins for boom-stick, stick-bucket, connecting rod-rocker arm, etc. Working pressure ≤50MPa

Performance Parameters: Radial load ≥80kN, surface hardness HRC 50-55, coefficient of friction ≤0.15 (with grease), suitable for swing frequency ≤10 times/minute, swing angle ≤±90°, service life ≥8000 working hours

Core Functions and Structural Features: Wear-resistant and friction-reducing: Alloy steel integral quenching + chrome plating of the inner hole improves surface hardness and wear resistance, reduces direct wear between the pin and the mounting hole, reduces friction loss at the hinge, and is suitable for heavy-duty high-frequency swing conditions.

Positioning Compensation: Precise dimensional tolerances (inner diameter tolerance H7, outer diameter tolerance g6) ensure radial positioning accuracy of the pin, compensate for assembly clearances in the hinge structure, suppress radial runout of the pin, and accommodate pin radial runout ≤0.05mm.

Fatigue Resistance: The 42CrMo material possesses high toughness and fatigue strength, suitable for long-term alternating loads, preventing sleeve cracking and deformation, and ensuring stable operation of the hinge structure.

High Adaptability: Chamfered ends facilitate installation, suitable for cold installation (-20℃) or press-fitting (pressure ≤5kN). After installation, it forms a stable fit with the pin and mounting holes, suitable for various Caterpillar engineering machinery hinge components.