CAT 498-5587 219.164mm Inner Diameter Sleeve

CAT 498-5587 is a Caterpillar genuine heavy-duty axle wear-resistant sleeve (steel support bushing), with an inner diameter of 219.164 mm (8.628 inches). It is suitable for heavy-duty components such as the input shaft of the drive axle main reducer, balance shaft bearing housing, or boom hinge pin of Cat 777D/785D mining trucks and D11T bulldozers. It provides transition support, radial positioning, and wear protection between the axle and bearing/bearing housing, and withstands impacts and radial loads under extreme working conditions. The following is a professional technical and application guide:

Core Technical Parameters (Professional Version)

Item Details
Basic Attributes
Model: 498-5587, Type: Heavy-duty axle wear-resistant sleeve (straight-tube, flangeless, solid steel structure), Suitable for Cat 777D/785D mining truck drive axle main reducer input shaft, D11T bulldozer track frame balance shaft bearing housing, 988H loader boom upper hinge pin end, Material: SAE 4140 alloy tempered steel (tensile strength ≥1000 MPa, hardness HB 280-320), inner diameter 219.164 mm (tolerance H7, +0.063/0 mm), outer diameter 240.000 mm (tolerance g6, 0/-0.040 mm), total length 180 mm (tolerance ±0.20 mm), unit weight approximately 18.2 kg, rated radial load ≥350 kN, operating temperature -40℃ to +150℃, surface nitrided (nitriding depth 0.3-0.5 mm, surface hardness HV 700-900, salt spray resistance ≥200 hours), compatible shaft diameter 219.164 mm (tolerance js6), bearing housing bore diameter 240.000 mm (tolerance H7) Cat® Parts. Key Dimension: Inner Diameter 219.164 mm Dimensions: 8.628 inches (tolerance +0.063/0 mm), outer diameter 240.000 mm (9.449 inches, tolerance 0/-0.040 mm), length 180 mm (7.087 inches, tolerance ±0.20 mm), wall thickness 10.418 mm (tolerance ±0.05 mm), chamfered ends 15°×1.5 mm, inner hole surface roughness Ra≤0.8 μm, outer circle surface roughness Ra≤1.6 μm, coaxiality ≤0.05 mm, end face perpendicularity ≤0.03 mm. Material and Process: SAE 4140 alloy steel, quenched and tempered (quenching + high-temperature tempering), surface nitrided for enhanced wear and corrosion resistance, free from defects such as sand holes and cracks. The inner hole can be equipped with a lubrication groove (in some batches), suitable for grease lubrication (NLGI 2 lithium-based grease) or oil lubrication (ISO VG 68). Anti-wear hydraulic oil; wear resistance life ≥6000 hours under rated operating conditions; reassembly accuracy ≤0.08 mm. Compatible models: Cat 777D/785D/789D mining truck drive axle main reducer input shaft, D11T/D10T bulldozer track frame balance shaft bearing housing, 988H/992K loader boom hinge pin, 793D mining truck steering knuckle vertical shaft. Core function: shaft-bearing housing transition support for heavy-duty equipment, suitable for radial loads ≥300 kN and impact loads ≥25 kN, preventing direct wear between shaft and bearing housing, ensuring transmission/support accuracy. Assembly fit: Clearance fit with shaft (clearance 0.02-0.05 mm, easy installation and positioning); interference fit with bearing housing (interference 0.03-0.06 mm, heat fitting temperature 100-120℃); radial runout ≤0.08 mm after installation. mm, axial runout ≤0.10 mm, coaxiality error with matching bearing (e.g., 574-3204 tapered roller bearing) ≤0.05 mm.
Installation and Maintenance Points:
**Before installation, clean the inner and outer surfaces of the sleeve, the journal, and the bearing housing bore. Check the sleeve for deformation, cracks, and nitriding layer peeling. Measure the inner diameter/outer diameter/length and roundness to ensure they meet tolerances. Ensure the bearing housing bore is free of burrs and dents, and the journal surface is free of scratches.

During assembly, heat the sleeve to 100-120℃ (induction heating/oil bath, avoid localized overheating), quickly press it into the bearing housing bore and position it. After cooling, install the shaft assembly, ensuring the sleeve fits snugly against the bearing housing bore without gaps and that there is no jamming with the shaft.

Maintenance Recommendations: Check the lubrication status and surface wear every 1000 hours. If the inner bore wear >0.15 mm, surface peeling, or nitriding layer damage occurs, replace immediately to prevent accelerated wear of the shaft and bearing housing, which could lead to transmission failure.