Sintered Oil-impregnated Bearing Features
A sintered oil-impregnated bearing is a bearing that lubricates itself during use and is made using powder metallurgy technology whereby metal powder is packed and then heated to form a product which is then impregnated with oil via the many pores that are characteristic of sintered materials.
The presence of lubricant is necessary for a bearing to function correctly. In the case of a sintered oil-impregnated bearing, a pumping action occurs during operation due to the revolution of the shaft, and this sucks the oil inside the bearing outward. The oil wedge that occurs due to the oil lifts the shaft from the surface of the bearing and prevents metal contact. The heat generated from friction also causes the oil to expand and seep out to the bearing’s sliding surface, which has a cooling effect as well as a lubricating effect.
When the shaft is still, the oil on the sliding surface is once again absorbed back into the pores in the bearing by capillary force.
Strengths of Sintered Oil-impregnated Bearings
- Used in a wide variety of areas including automobiles, home appliances, and digital products.
- A range of advice can be provided on the basis of a bearing analysis after a reliability test for Porite products.
- Porite has in place an agile and adaptable system for customer-focused problem solving R&D and proposal-driven R&D.
- Porite is in a stronger position than its competitors thanks to its patented technology.
- Bearing performance evaluation tests are available with a testing device developed by Porite.
- Porite can undertake development of presses, automation devices, and other such things.
- We undertake joint development of specialized oil for sintered oil-impregnated bearings with major lubricating oil manufacturers.
- In-house design and production of precision molds is possible.
- We always aim to have our products incorporated in customers’ projects, so we are able to participate from the development phase.
Sintered Oil-impregnated Bearing Production Record 8 Billion/Year
World No.1 Share for Sintered Oil-impregnatedBearings for Micro Motors
Bearing Technology Dept. Development/Evaluation Framework
