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This shaft sleeve is made of CuSn8 bronze as the base material and is an economical bearing with high load-bearing capacity and good wear resistance. The standard OOB-22 product has irregular diamond shaped oil holes or perforated oil holes on its working surface, which serve as a storage or refueling function and can easily form an oil film during initial movement, thereby reducing the initial friction coefficient. Mainly used in high load and low speed situations such as agricultural machinery and construction machinery.