CAT 613-4489 SLEEVE

CAT 613-4489 is a straight bushing (positioning/support carbon steel sleeve) from Caterpillar for hook winches. It is used for radial positioning and vibration damping of the winch drum shaft/planetary gear set, and is compatible with the hydraulic winch systems of equipment such as the Cat 336D2 excavator and 988K loader. The following is professional structured information.

Core Parameters (Professional Version)

Project Details
Basic Attributes Model 613-4489, Straight Bushing (Positioning Sleeve), Inner Diameter φ133.4 mm (Tolerance H7: 0–+0.04 mm), Single Weight 1.12 kg, Quantity 1 Piece Per Unit (Windmill Drum Shaft Support End / Planetary Carrier Positioning End), Fitting Shaft Diameter φ133.4 mm (Tolerance h6: 0–-0.035 mm)

Key Dimensions Inner Diameter φ133.4 mm (Tolerance JS6: ±0.015 mm), Outer Diameter φ155 mm (Tolerance 0–-0.03 mm), Length 45 mm (Tolerance ±0.1 mm), Chamfer at both ends 2 mm × 45°, Inner Hole Surface Roughness Ra≤0.8 μm, Outer Diameter Surface Roughness Ra≤1.6 μm

Material and Process Material is high-quality carbon steel (Q345B, quenched and tempered HB) 220–250 mm), surface galvanized and passivated (corrosion resistance ≥ 96 hours neutral salt spray), precision boring of inner hole (roundness ≤ 0.01 mm, cylindricity ≤ 0.015 mm)

Performance Parameters: Rated radial load 80 kN (linear velocity ≤ 0.8 m/s), operating temperature -40℃ to +120℃, compatible mounting hole φ155 J7 (+0.01–-0.01 mm), shaft clearance 0.03–0.07 mm

Compatible Models: Excavator 336D2/349F, Loader 988K/992K, Mining Truck 770G/772G, compatible with hydraulic winch drum shaft support/planetary gear set end cover positioning hole

Installation and Maintenance Points: Clean the journal before installation (surface free of scratches/burrs, roughness Ra ≤ 0.8). (μm) For the mounting hole, use a special pressure sleeve to press the sleeve into the mounting hole (pressing force ≤ 50 kN). Do not strike the sleeve end face. The journal must be heat-treated HB 240–280, with no rust on the surface.

Clearance Control: After installation, use a plug gauge to measure the radial clearance, ensuring it is 0.03–0.07 mm. If the clearance exceeds the tolerance, adjust by replacing the adjusting shims with different wall thicknesses (0.05 mm/0.1 mm specifications). For heavy-load conditions, a clearance of 0.04–0.06 mm is recommended.

Lubrication Requirements: Before installation, apply extreme pressure lithium-based grease (NLGI 2 grade) to the inner bore. During operation, rely on system oil lubrication (flow rate ≥ 0.5 L/min). Check the oil quality/quantity every 1500 hours to avoid dry friction causing sleeve wear.

Troubleshooting: If abnormal noise or temperature rise occurs, first check the sleeve wear (wear > 0.1 mm, need to be replaced), mounting hole deformation or insufficient lubrication. If necessary, replace the sleeve and correct the radial runout of the shaft system to ≤ 0.05 mm.