Material Structure
CuZn25Al6Fe3Mn4+graphites
Features
1. Casting high strength brass embedded with graphites
2. It breaks through the limitations of general bearings depending on oil film lubrication.
3. During use, the solid lubricant is rubbed against the shaft through frictional heat, forming an excellent condition for the coexistence of oil and powder lubrication, which not only protects the shaft from wear, but also makes the solid lubricant persist.
4. Hardness is twice higher than normal copper bushing,
5. Wear-resistant performance is also twice higher than normal type.
Application: High-temperature, high-load, low-speed and heavy-load occasions including
1. Metallurgical continuous casting machines
2. Train supports
3. Steel rolling equipment
4. Mining machinery
5. Ships
6. Gas turbines
Main Techincal Index
| Model | Unit | JDB-1 | JDB-2 | JDB-3 | JDB-4 | JDB-5 |
| Material | CuZn25AI6Fe3Mn4 | CuSn6Zn6Pb3 | Steel+CuSu6Zn6Pb3 | HT250 | GCR15 | |
| Fiction coef | μ | ＜0.16 | ＜0.15 | ＜0.14 | ＜0.18 | ＜0.17 |
| Temp Max. | ℃ | 300 | 350 | 300 | 400 | 350 |
| Load Max. | N/mm2 | 100 | 60 | 70 | 60 | 250 |
| Velocirty Max.(dry) | m/s | 0.4 | 2 | 2 | 0.5 | 0.1 |
| Velocirty Max.(oil) | m/s | 5 | 10 | 10 | 5 | 3 |
| PV Max.(dry) | N/mm2.m/s | 1.8 | 0.5 | 0.6 | 0.8 | 2.5 |
| PV Max.(oil) | N/mm2.m/s | 3.8 | 3.8 | 3.8 | 3.8 | 3.8 |
| Dilatability | x10-6/℃ | 16~20 | 16~18 | 16~20 | 8~12 | 8~12 |
| Material Hardness | HB/HRC | 210~250HB | 80~120HB | 60~90HB | 180~230HB | HRC55~60 |
High-Strength Brass Solid Lubricating Bearings are engineered to deliver exceptional durability and performance in high-load, low-speed, and high-temperature applications. Made from casting high-strength brass embedded with graphite, these bearings provide reliable lubrication without relying solely on an oil film. The solid lubricant interacts with frictional heat during operation, creating an optimal combination of oil and powder lubrication that protects shafts from wear while ensuring long-lasting performance.
High-Strength Brass Construction: Hardness is twice that of conventional copper bushings, providing superior structural strength.
Embedded Solid Lubricant: Graphite ensures continuous lubrication, reducing wear and extending service life.
Oil-Free or Hybrid Lubrication: Works effectively in environments where traditional oil lubrication is limited or unavailable.
Enhanced Wear Resistance: Wear resistance is approximately twice that of standard brass bearings, making it ideal for demanding conditions.
Metallurgical continuous casting machines
Train support systems and rail equipment
Steel rolling and heavy industrial machinery
Mining and excavation equipment
Marine applications including ship components
Gas turbines and high-temperature rotating machinery
High-Strength Brass Solid Lubricating Bearings provide a reliable, maintenance-friendly solution for engineers seeking long-lasting, wear-resistant bearings capable of operating under extreme load, temperature, and environmental conditions.
