The invention belongs to the field of
machine repair, and particularly relates to a bearing lubricating device. The bearing lubricating device comprises a
machine frame, a lubricating portion and a rotary portion. A sliding rail is arranged on the
machine frame. The lubricating portion comprises a supporting seat, an
oil tank and two or more oiling units symmetrically arranged relative to the axisof the supporting seat, a first flow guide hole is formed in the supporting seat, and the
oil tank is provided with an oil inlet
pipe communicating with the first flow guide hole. Each oiling unit comprises an
electromagnet fixed to the machine frame, an oiling bar connected with the machine frame in a sliding mode and a sliding hole formed in the supporting seat, wherein a tension spring is fixed between one end of the oiling bar and the
electromagnet, the other end of the oiling bar extends into the sliding hole, an oil outlet and a second flow guide hole capable of communicating with the first flow guide hole are formed in the oiling bar, and the oil outlet communicates with the second flow guide hole. The rotary portion comprises a moving table, a rotary table and a rotary wheel, themoving table can slide on the sliding rail, the rotary table is rotationally connected with the moving table, a positioning shaft is arranged on the rotary table, and the rotary wheel and the rotary table are in belt transmission. By means of the scheme, the problem of non-uniform
lubrication in the prior art is solved.