High Load Self Lubricating Bronze Bearing Graphite Plugged Brass Sleeve Anti-Friction Copper Bush for Construction Machinery
Graphite Embedded Bronze Bushing, Self Lubricating Brass Bearing Sleeve, Oil-Free Copper Bush for Mold, Construction Machinery & Hydraulic Cylinder
Short Description (Top Bullet Points)
✅ Self-lubricating graphite inlay design, no continuous oil supply required
✅ High strength brass alloy substrate, excellent heavy load & shock resistance
✅ Low friction coefficient, anti-wear and long service life
✅ Works well in dusty, high temperature, hard-to-lubricate conditions
✅ Standard sizes in stock, OEM custom machining supported
Full Product Details
Introduction
Graphite embedded bronze bushing (oil-free brass sleeve) adopts high-strength brass alloy as base material, with solid graphite plugs embedded evenly on the sliding surface. During operation, graphite forms a stable solid lubricating film between the bushing and shaft. It solves the lubrication difficulty for equipment where oil filling is inconvenient. Widely used for low-speed, heavy-load, intermittent motion scenarios.
Technical Parameters
| Item | Technical Data |
|---|---|
| Base Material | High-strength Brass / Tin Bronze |
| Solid Lubricant | Graphite |
| Max Static Load | 100 N/mm² |
| Max Dynamic Load | 50 N/mm² |
| Max Sliding Speed | 0.5 m/s |
| Working Temperature Range | -40℃ ~ +300℃ |
| Friction Coefficient | 0.08 ~ 0.18 (dry friction) |
| Hardness of Matrix | HB 210 ~ 260 |
| Surface Roughness | Ra ≤ 0.8μm |
| Tolerance | ISO standard, custom tolerance available |
Core Advantages
- Oil-free self-lubricating: Reduce maintenance work, no frequent oil refilling
- Outstanding wear resistance & anti-seize performance, avoid shaft scratch
- Good thermal conductivity, stable performance under high temperature
- Shock absorption and low sliding noise
- Good corrosion resistance for most industrial environments
- Easy installation, compact structure
Application Fields
- Injection mold, die casting mold
- Construction machinery, excavator hinge joint
- Hydraulic cylinder guide parts
- Automation equipment and robot joints
- CNC machine tools, textile & packaging machinery
- Automotive equipment, agricultural machinery
- General heavy-duty articulated mechanical parts
Our Service
- Ready stock for standard sizes
- Custom production according to customer drawings or samples
- Precision CNC machining, strict quality inspection
- OEM & ODM acceptable
- Professional technical support for bearing type selection
Packaging
Anti-rust paper wrapping + export carton; wooden case for bulk order to prevent transit damage.
Keywords
bronze bushing, graphite brass bearing, self lubricating copper sleeve, oil free bush, brass bearing sleeve, heavy duty sliding bearing, mold bushing, excavator bushing, hydraulic cylinder bushing
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.