CAT 535-6285 BUSHING-SEM

CAT 535-6285 is a Caterpillar genuine composite bearing bushing (SEM series), adapted for the steering and suspension systems of power graders, used for sway support and load damping in joint areas. The following is raw data only, excluding replacement parts information for Cat®…

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model: 535-6285; Type: Composite Bearing Bushing; Material: Carbon Steel Matrix + Bearing Composite Material; Weight: 0.9 kg; Operating Temperature: -30℃ to +110℃; Rated Static Load: 180 kN; Rated Dynamic Load: 85 kN; Fitting Clearance: 0.05-0.12 mm; Lubrication Method: Grease Lubrication; Fitting Oscillation Frequency: ≤1.2 Hz

Key Dimensions (Metric/Imperial): Inner Diameter: 50 mm (1.97 in); Outer Diameter: 65 mm (2.56 in); Overall Length: 45 mm (1.77 in); Wall Thickness: 7.5 mm (0.30 in); Flange Diameter: 75 mm (2.95 in); Flange Thickness: 5 mm (0.20 in); Fit Tolerance: H7/h6; Surface Roughness: Ra≤0.08 μm

Performance Parameters
Matrix Hardness: HB 220-260; Composite Material Layer Thickness: 0.8-1.2 mm, coefficient of friction ≤0.08 (grease lubrication), compressive strength ≥250 MPa, wear rate of wear-resistant layer ≤0.03 mm/1000h, no sealing structure, compatible system working pressure ≤15 MPa

Structure and Compatibility Characteristics

Composite Structure: Carbon steel matrix ensures structural strength; bearing composite material layer (containing solid lubricant) reduces friction and wear, suitable for oscillating conditions such as steering knuckles and connecting rods, reducing joint jamming and abnormal noise.

Flange Positioning: Flange structure is used for axial positioning, preventing bushing movement within the mounting hole, suitable for frequent oscillation and impact loads of suspension systems, ensuring assembly stability.

Self-Lubricating Compatibility: Suitable for dusty and vibrating conditions of motor graders; the composite material layer can store grease, reducing lubrication maintenance frequency and extending the service life of joint components.

Compatible Models and Application Scenarios

Motor Graders: 120 GC, 140 GCCat®…

Application Scenarios: Steering knuckle bushings, suspension link bushings, and blade lifting mechanism joints, adapting to the steering and leveling actions of graders, ensuring overall machine control precision and operational efficiency.

Installation and Maintenance Points (Original Data)

Installation: Clean the mounting holes and pins, ensuring no burrs or rust on the surface. Mounting hole tolerance H7, pin tolerance h6.

Use the cold-fit method, pressing evenly with a special press. Do not strike the flange face. After installation, check end face runout ≤ 0.05 mm.

After installation, add NLGI 2 lithium-based grease. Perform a no-load swing test 5-8 times to ensure no jamming and normal clearance.

Maintenance: Check bushing clearance every 1500 hours. Replace immediately if clearance exceeds 0.3 mm.

Replenish grease every 400 hours, cleaning the grease fitting to prevent contaminants from entering, suitable for dusty working conditions.