Does the graphite copper sleeve slide or rotate?

The graphite copper sleeve is a graphite sliding bearing with self-lubricating properties. It can perform axial linear motion and rotational motion relative to the shaft, and can also perform axial linear motion and rotational motion at the same time. But no matter what kind of movement, sliding friction rather than rolling friction is generated between the graphite copper sleeve and the shaft.
The graphite on the graphite copper sleeve is arranged in a geometric pattern and overlaps in the direction of movement. The graphite area generally accounts for 25~30% of the entire friction surface, making it effective in any direction of movement without affecting the matrix. structural strength and load-bearing capacity.
The graphite copper sleeve can effectively suppress wear, heat, locking and other unfavorable phenomena under working conditions without oil lubrication. At the same time, the graphite copper sleeve can also be machined with oil grooves and oil holes on the base body, using grease to assist lubrication. Under oil lubrication, It can also reduce the friction coefficient and improve the service life.
During the entire service life of the graphite copper sleeve, no additional lubrication is required. This is an important advantage for some structures that are difficult to maintain. Traditional bearings are very expensive and damaging to maintain, and the maintenance-free nature of graphite copper sleeves is the perfect solution to this unique problem.

Advantages of graphite copper sleeves:

• Maintenance-free or low-maintenance operation
• Lubricant will not leach out
• High load can be achieved
• Long maintenance cycle
• High temperature range
• Dirt-resistant
• Corrosion resistance

There are many copper alloy base materials available for graphite copper sleeves, such as:

• CuZn25Al5Mn4Fe3 manganese bronze
• CuSn5Pb5Zn5 lead-tin bronze
• CuAl10Ni5Fe5 Nickel Aluminum Bronze
• CuSn12 tin bronze
• etc.

For more optional materials and corresponding applicable working conditions, please contact Mingxu Bearing for consultation.
Graphite-based solid lubricants are very suitable for atmospheric conditions.
For applications in water or seawater, we have a special solid lubricant available based on MoS2 and PTFE as well as other additives.