Description
CAT 425-9360 10mm Inner Diameter Sleeve Bushing
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The CAT 425-9360 is a Caterpillar genuine straight-tube standard load sleeve bearing (shoulder sleeve), suitable for pin hinges and light-to-medium load oscillating parts of mini excavators and loaders, balancing wear resistance and ease of assembly. The following are the key details.
Core Technical Parameters
Item Details
Part Model: CAT 425-9360 (Straight Cylinder, Flangeless, with Axial Lubrication Groove)
Material: 4140 Chromium-Molybdenum Steel Base, Inner Hole Surface Hardened (HRC 58-62), Hardened Layer Thickness: 0.6-1.0 mm, Suitable for Oil/Grease Lubrication, Operating Temperature: -40℃ to +120℃
Key Dimensions: Inner Diameter 30 mm (1.181 in), Outer Diameter 35 mm (1.378 in), Length 32 mm (1.260 in), Chamfer 0.8 mm, Wall Thickness 2.5 mm
Unit Weight: Approx. 0.046 kg (0.101 lbs)
Tolerances and Clearances: Inner Diameter Tolerance H7 (+0.025/0 mm), Outer Diameter Tolerance g6 (0/-0.016 mm), Recommended Clearance with Pin: 0.02-0.05 mm
Load Capacity: Radial Rated Load 48 kN, static allowable load 65 kN, coefficient of friction 0.09-0.12 (grease lubrication)
Structure and Core Functions
Wear Resistance: 4140 steel base with surface hardening layer, suitable for light to medium load articulation points such as booms and sticks under non-extreme impacts, balancing wear resistance and economy.
Lubrication Optimization: Internal axial lubrication groove design ensures uniform grease distribution, reduces dry friction, is suitable for intermittent oscillation conditions, and extends the life of pins and bearings.
Easy Assembly: Thin-walled straight cylindrical structure, can be cold-pressed, requiring no complex tooling, suitable for batch maintenance scenarios, reducing assembly time.
Precise Clearance: Strict tolerance control, reasonable fit clearance, ensures flexible rotation of articulated parts, avoiding jamming and abnormal wear.
Compatible Models and Application Scenarios
Compatible Equipment: CAT 301.7CR, 302.7CR mini excavators, 903M/904M mini loaders, 416F backhoe loaders, etc.
Core Applications: Used for boom pin bushings, stick cylinder clevis bushings, connecting rod hinge points, steering mechanism pivots, etc., providing radial support and suitable for light to medium loads and low to medium speed swing conditions.
Installation and Maintenance Points
Installation: Clean the mounting holes and bearing surfaces, ensuring they are free of burrs and scratches; apply a pressing force of 4-7 kN, using a dedicated press head to press evenly, avoiding striking the end face to prevent damage to the hardened layer.
After installation, the coaxiality should be ≤ 0.05 mm, and the clearance should be controlled between 0.02-0.05 mm, ensuring smooth rotation.
Maintenance: Lubrication: Add NLGI Grade 2 lithium-based grease every 300-500 hours, until overflowing; for oil lubrication, use CAT HYDO 10 hydraulic oil.
Inspection: Regularly monitor the clearance. If it exceeds 0.10 mm or abnormal noise occurs, replace the bearing immediately and check the pin wear.
