Bi-metal Split Bushing With Steel Backing And CuPb24Sn4 Lead Bronze Lining. Pre-machined Oil Holes And Oil Grooves. High Load Capacity, Good Wear Resistance.

1. Material Specification

- Backing: Low carbon steel (ST12 / 10# steel), high mechanical strength, good load-bearing capacity
- Inner layer: CuPb24Sn4 lead bronze alloy, excellent anti-friction & wear resistance, good embedability
- Structure: Bimetal composite, rolled split type, pre-notched joint design for easy installation

2. Dimensional & Tolerance

- Dimension: Customizable ID / OD / Width according to drawing
- Outer Diameter Tolerance: ISO H7
- Inner Diameter Tolerance: ISO F7 after press fit
- Surface Roughness:
  - Steel outer surface: Ra ≤ 1.6 μm
  - Bronze sliding surface: Ra ≤ 0.8 μm
- Oil holes & oil grooves: Pre-machined radial oil holes + axial oil grooves for lubricant retention

3. Features

1. Split joint design, convenient assembly and replacement
2. Steel base provides high rigidity; bronze inner layer delivers low friction
3. Built-in oil grooves and oil holes maintain continuous lubrication film
4. Good conformability, anti-seizure and dirt embedding property
5. Resistant to impact load, widely used for heavy duty rotating parts
6. Can be manufactured per OEM drawings & samples

4. Typical Application

- Heavy duty truck trunnion / balance shaft
- Construction machinery, engine connecting rod, gearbox
- Agricultural machinery, hydraulic equipment, general industrial gear units
- Automotive brake camshaft, chassis hinge components

5. Quality Standard

- Compliance: ISO 3547, ISO 9001
- Inspection: 100% dimensional check, material composition test, metallographic examination
- Surface treatment: Steel outer surface anti-rust oil coating