Composed of Fe-Cu, the entire sintered bronze bearings are oilless bearings that contain oil in approximately 20% of pores, and feature low coefficient of friction and excellent wear resistance. Lubricating oil impregnated in the micro pores of Fe-Cu-based sintered metal is released to the friction surface under the influence of temperature and pressure during operation, and performs smooth lubrication. After the operation is finished, the lubricating oil is absorbed into the micro pores again, allowing semi-permanent use.
Structure
Cross Section Before and After Operation of Bearing-Shaft
500 Times Magnification
Characteristics
- It can be used without lubrication, but it exhibits better performance during lubrication.
- Solid lubricant and oil are evenly distributed, so it can be used in any direction.
- It features a low coefficient of friction and excellent wear resistance.
- Compared to copper alloy bearings, the unit price is superior.
- Used for joints (arms, links) of construction machinery.
Mechanical & Physical properties
| Material | Hardness (HRB) | Oil Volume (%) | Temperature (℃) |
| 200W | Min. 70 | Min. 17 | -40~+120 |
▶ Value indicated above is general value and it can be changed without notification for improvement.
Use
- Boom, Arm, Arm Cylinder, Bucket of Excavator