CAT 498-1045 SLEEVE

CAT 498-1045 is a heavy-duty seamless steel sleeve for Caterpillar engineering machinery, adapted for the pin hinge joints of the traveling and working devices, used to withstand radial heavy loads and impacts. The following is raw data only, without replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 498-1045, Type: Seamless Steel Sleeve, Material: Chromium-Molybdenum Alloy Steel (4140), Single Weight: 3.18 kg (7.01 lbs), Working Temperature: -40℃ to +150℃, Radial Load Capacity: ≥320 kN, Surface: Carburizing and Quenching + Oxidation Blackening, Corrosion Resistance: ≥120 hours Salt Spray, Hardness: HRC 58-62, Elastic Modulus: 206 GPa, Coefficient of Thermal Expansion: 11.7×10^-6/℃

Key Dimensions (Metric / Imperial)
Outer Diameter: 82.55 mm (3.250 in), Inner Diameter: 63.50 mm (2.500 in), Total Length: 127.0 mm (5.000 in), Wall Thickness: 9.525 mm (0.375 in), Chamfer at Both Ends: C2 mm, Outer Diameter Tolerance: + 0.025/-0.015 mm, Inner diameter tolerance + 0.010/-0.005 mm, Length tolerance + 0.15/-0.08 mm, Roundness ≤0.012 mm, Surface roughness Ra≤0.8 μm

Performance Parameters: Compatible bore diameter 82.55 mm (H7 tolerance), compatible shaft diameter 63.50 mm, Installation interference 0.20-0.30 mm, Maximum permissible speed 600 rpm, Coefficient of friction ≤0.005 (lubricated condition), Breaking load ≥400 kN, Wear life ≥6000 hours (standard operating conditions)

Structure and Compatibility Characteristics: Seamless heavy-duty structure: Seamlessly rolled as a whole, with no weld seams or weak points, suitable for the track frames, booms, sticks, and other articulated parts of bulldozers, loaders, and excavators. It can withstand continuous impact and vibration, avoiding local deformation and cracking.

High-precision fit: High precision in the fit between the inner diameter and shaft diameter, and the outer diameter and hole diameter, with a clearance ≤0.05 mm, ensuring the accuracy of articulated movement, reducing relative wear between the pin and sleeve, and extending component life.

Wear-resistant reinforcement: Carburized and quenched layer depth 0.9-1.3 mm, surface hardness HRC 58-62, core hardness HRC 30-35, balancing surface wear resistance and core toughness, suitable for high-intensity operations.

Compatible models and application scenarios:

Bulldozers: D8T, D9T, etc. track frame balance beam pins, blade hinge points, suitable for heavy-load impact conditions in bulldozing operations.

Loaders: 982M, 988K, etc. boom and rocker arm hinge points, bucket pins, suitable for frequent material loading and unloading movements and heavy-load requirements.

Excavators: 349D2, 390F, etc., with boom and bucket hinge points and boom cylinder lugs adapted to the vibration and impact conditions of excavation operations.