Shoulder Bimetal Guide Bushing, Steel Backed Bronze Composite Bearing Sleeve, Applicable To General Machinery Low-speed Heavy Load Bearing Positions

1. Material Specification

Outer Shell: SUJ2 High Carbon Chromium Bearing Steel, Hardness HRC 60~64 after carburizing & quenching
Inner Liner: Tin Bronze / High Strength Brass Alloy, fine machined inner surface
Bonding: High-strength metallurgical bonding between steel and bronze layer, no delamination under load
Surface Finish:
  Outer steel surface: Ra ≤ 0.8 μm brushed finish
  Inner bronze bore: Ra ≤ 0.4 μm precision honing

2. Dimensional & Tolerance

Structure: Flanged shoulder type, for mounting positioning
Bore Tolerance: H7
Outer Diameter Tolerance: g6
Perpendicularity of flange face: ≤0.003 mm
Available standard bore sizes: 10mm,13mm,16mm,20mm,25mm,30mm (custom sizes acceptable)
3. Key Features

1. Bimetallic composite structure: combines high rigidity of steel and excellent wear resistance of bronze
2. Flange shoulder design for easy axial positioning during installation
3. Precision machining for high straightness and low clearance movement
4. Good anti-seizure property, suitable for reciprocating linear motion
5. Stable performance under continuous cyclic load in stamping dies

4. Application Scope

Progressive stamping dies, stripper plate guide assembly
Precision automation linear sliding mechanisms
Hydraulic & pneumatic cylinder guide sleeves
General machinery low-speed heavy load bearing positions