Bimetallic Bearing Steel Backed Bronze Alloy Sliding Bushing Heavy Load Boundary Lubrication Bi-Metal Sleeve for Construction Machinery & Mining Equipment

1. Material Structure

JF-800 is a two-layer steel-copper bimetallic sliding bushing, sintered alloy bearing for heavy load boundary lubrication.

Backing: Low carbon steel base, provides high mechanical strength and rigidity
Surface alloy layer: Sintered CuPb10Sn10 / CuSn6Zn6Pb3 bronze alloy layer, good wear resistance and embeddability
2. Material & Performance Features

High Load & Impact Resistance: Steel backing combined with lead bronze alloy, excellent fatigue strength, withstand heavy alternating impact load.
Good Embeddability & Conformability: Soft bronze alloy layer can embed tiny foreign particles, adapt to slight shaft misalignment and protect mating shaft surface.
Excellent Wear Resistance Under Boundary Lubrication: Stable tribological performance with intermittent grease or oil supply.
High Thermal Conductivity: Rapidly dissipate friction heat to avoid local overheating and bearing seizure.
Cost Effective: Replace solid bronze bushings, reduce material cost while maintaining high load performance.

3. Application Scenarios

Suitable for heavy-duty low-speed rotary and oscillating motion. Widely used in heavy vehicle balance bridge bushes, construction machinery track roller bushes, automotive leaf spring bushes, engine connecting rod pin bushes, agricultural machinery, mining equipment and hydraulic heavy load hinge components.