CAT 237-4360 SLEEVE AS.

CAT 237-4360 is a Caterpillar shaft sleeve assembly (positioning/sealing type) for transmission/hydraulic systems. It is compatible with C13/C15 engines, 349D2 excavator slewing gearboxes, 992K loader gearboxes, etc. It is used with 159-5424 bearings and 168-8390 bearing seats to provide radial positioning, axial limiting and sealing protection for the shaft system, ensuring stable operation of the bearing system. The following is structured technical and application information:

Core Technical Parameters

Item Details
Basic Attributes
Model 237-4360, shaft sleeve assembly (including positioning sleeve, sealing ring, and retaining ring), material is 42CrMo alloy structural steel (tempered hardness HRC32-38, surface hard chrome plated, thickness 0.05-0.08 mm, Ra≤0.16 μm, wear-resistant, corrosion-resistant, and fatigue-resistant), single weight approximately 0.8 kg, operating temperature -40℃ to +120℃, suitable for medium speed (≤2500 rpm), medium load conditions, used with 159-5424 bearing and 168-8390 seat ring

Key Dimensions
Inner diameter 100 mm (fitting journal, tolerance 0/-0.020 mm), outer diameter 120 mm (tolerance +0.025/0 mm), total length 65 mm (tolerance 0/-0.12 mm) mm), positioning step height 8 mm (tolerance 0/-0.05 mm), sealing groove diameter 110 mm (tolerance + 0.015/0 mm), sealing groove width 5 mm (tolerance 0/-0.05 mm), fit tolerance k6 (+0.012/-0.008 mm), radial runout ≤0.015 mm, end face perpendicularity ≤0.01 mm. Compatible Models and Parts: Compatible with Cat C13/C15 engines (crankshaft bearing positioning sleeve), 349D2 excavators (slewing gearbox output shaft sleeve), 992K loaders (gearbox input shaft sleeve), D11T bulldozers (final drive gearbox sleeve), and compatible with 159-5424 bearings, 168-8390 seat rings, 1J-0581 bearing caps, and 474-9675 O-rings. Performance Indicators: Rated radial load 80 kN, axial load capacity… 50 kN, impact load resistance ≥30 kN, sealing ring oil pressure resistance 0.8 MPa, service life ≥10000 hours (normal operating conditions)

Installation and Maintenance Points:
**Before installation:** Clean the inner and outer surfaces of the sleeve, journal, and mating surfaces. Check for cracks, rust, and deformation. Measure dimensions and fit tolerances. Apply Cat-specific assembly oil to the journal and use cold-press installation to avoid sleeve deformation caused by heat fitting.

Use a special press to evenly press the sleeve into the journal, ensuring the positioning step fits snugly against the bearing inner ring end face. Do not strike the sleeve end face to prevent damage to the alloy structural steel. After installation, check the fit between the sleeve and journal to ensure there is no looseness or gap, and that the sealing ring is properly installed without twisting.

Maintenance and Replacement: Check the sleeve surface wear and sealing ring aging every 1500 hours. If the sleeve outer diameter wear is >0.1 mm or the sealing ring shows cracks or aging, replace it immediately. It is recommended to replace it simultaneously with the bearing, bearing seat, and bearing cap to ensure shaft positioning and sealing effectiveness.