Self-lubricating sintered bearings

A self-lubricating sintered bearing is a metallic component with high porosity (20-25% in volume), impregnated in a lubricant oil. The oil contained in the porosity provides a constant lubrication between bearing and shaft, so the system does not need any additional external lubricant. Self-lubrication allows this type of sliding bearing to work under hydrodynamic conditions, resulting in a very low friction coefficient.

Self-lubricating sintered bearings have some advantages compared to other types of dry sliding bearings:

Reliability.
The constant oil presence eliminates the risk of seizure, and allows the bearing to work during thousands of hours without wear.

Economy.
Maintenance-free, no need for lubricants.

Performance.
Able to work under loads of up to 10 MPa, and speeds up to 8 m/s.
The maximum working PV is is the range of 10 MPa·m/s, but can be surpassed in special cases.
The dimensional precision is very high (up to IT 5 in diameter), and produces extremely low noise.

BEARINGS BY DESIGN

Their shape, material and oil are specifically designed for a given equipment.

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SELFOIL^® STANDARD BEARINGS

Their shape, material and dimensions are standard. SELFOIL^® is the best solution for retail, and is available off the shelf.

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SELFOIL^® RODS FOR MACHINING

These bearings are solid or hollow cylinders, to be machined to final dimensions when the system is not ready for standard SELFOIL^® bearings.

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AMES manufactures the self-lubricating bearings at AMES Solsona plant, which is specialised in this product. This plant includes a R&D laboratory specialised in bearings, able to provide customized solutions to their customers, in terms of material choice, oil, shapes, tolerances, and assembly method.

The main applications for self-lubricating sintered bearings are:

AUTOMOTIVE