Abstract: Reentrant grooves and inside flats of P/M oil-impregnated bearings are usually made by machining. The cutting groove machine introduced in this paper can automatically cutreentrant grooves and flanges on oilless bronze bearings. The machine is made of bed and components of spindle, compact-feeding, clamping and tool post, and the working procedures of executive mechanisms are controlled by cams. Comparing with original manual operation both quality and quantity of cutting groove can be increased.The cutting groove machine especially can reduce labour intensity and ensure safty in production.Therefore the machine is well accepted by operating workers.