Bi-Metal Bearings
Product Description
Bi-Metal Bearings are engineered bush bearings made using two bonded layers: a steel backing layer for strength and rigidity, and a bronze or copper alloy inner layer for superior wear resistance and low friction. Some grades include overlays of tin, lead, graphite, or PTFE to enhance self-lubrication and load-bearing properties. These bearings are widely used in rotating, reciprocating, and heavy mechanical load environments such as electric motors, submersible pumps, diesel engines, and compressors.
Applications
Commonly used in:
- Submersible & Industrial Pumps
- FHP Motors and HVAC Motors
- Internal Combustion Engines
- Compressors & Gearboxes
- Hydraulic and Industrial Machinery
- Connecting Rod Assemblies
- High-load Shaft Support and Guide Bushings
- Automotive Powertrain Components
Key Features
- High load-bearing capacity
- Low coefficient of friction
- Excellent seizure and fatigue resistance
- Suitable for high temperature and continuous operation
- Available in self-lubricating and lubricated variants
- High anti-wear surface with long working life
Material Construction
| Layer | Material | Purpose |
|---|---|---|
| Backing Layer | Low-carbon Steel | Strength & dimensional stability |
| Bearing Layer | Bronze / Copper Alloy (e.g., CuPb10Sn, CuSn8) | Load support & friction reduction |
| Optional Overlay | Lead / Tin / Graphite / PTFE | Self-lubrication & enhanced performance |
Available Types
- Cylindrical Bushes
- Flanged Bushings
- Half-Shell Bearings
- Custom Shaped Bearings (As per Drawing)
Size Range
| Parameter | Range |
|---|---|
| Inner Diameter (ID) | 6 mm – 200 mm |
| Outer Diameter (OD) | 8 mm – 220 mm |
| Length | 8 mm – 180 mm |
| Note: Custom OEM dimensions available based on drawing and sample. | |
Technical Specifications
| Property | Value |
|---|---|
| Maximum Load Capacity | Up to 120 MPa |
| Maximum Speed | Up to 6 m/s (Depending on Lubrication) |
| Working Temperature | -40°C to +220°C |
| Coefficient of Friction | 0.03 – 0.15 |
| Hardness (Bearing Surface) | 60–90 HB (Standard) / Customized Options Available |
Lubrication Options
- Grease-Lubricated
- Oil-Lubricated
- PTFE Dry Lubricated
- Solid-Lubricant Embedded Type (Graphite Plugged)
Industry Standards & Certification
- ISO 3547
- DIN 1494
- RoHS & REACH Compliant
- OEM / Automotive Grade Available
Advantages
- Superior performance under high load & vibration
- Extended bearing life under harsh operating conditions
- Reduced maintenance downtime
- Precision fit for motors, pumps, and rotating equipment
- Compatible with water, oil, and industrial lubrication systems
Packaging
- Bulk Packed
- Protective Paper Wrap + Carton Boxes
- Export Grade Wooden Crate
- OEM Branding and Laser Marking Available