Sintered iron-copper-based oil-containing bearings that respond to material cost reduction while maintaining the sliding performance of motor bearings.

In automotive and home appliance motors, there is a challenge to ensure stable sliding performance while also keeping material costs down. In particular, copper-based sintered oil-impregnated bearings are susceptible to fluctuations in copper prices, and reducing the amount of copper used raises concerns about whether friction characteristics will deteriorate during material selection. The Diamet F350 is an iron-copper-based sintered oil-impregnated bearing that achieves a high copper coating rate on the sliding surface while keeping the copper content low by using special copper powder. On the inner diameter surface of the bearing, it maintains a copper content of 15% with a copper surface area ratio of over 30%. ■ Balancing material cost reduction and sliding performance ▼ Material cost ratio of 0.6 compared to the comparative material F336 ▼ Reduction of copper content from 48-52% to 13-17% ▼ Improvement of copper coating rate on the sliding surface through special copper powder ■ Friction characteristics ▼ Maintains friction characteristics equivalent to the comparative material F336 ▼ The bearing itself is impregnated with lubricating oil, exhibiting self-lubricating functionality This can be utilized in the material selection for motor components where there is a desire to reduce copper usage while maintaining bearing performance. Documents summarizing the material composition, copper coating rate, and friction characteristics of the F350, as well as more detailed benefits from material cost reduction and maintenance of sliding performance, can be downloaded from the link below.

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