Lip greasing device for rear PTFE oil seal assembly of engine crankshaft

The utility model relates to the technical field of sealing production equipment, and discloses an engine crankshaft rear PTFE oil seal assembly lip greasing device which comprises a greasing gun body, the left side of the greasing gun body is in a step shape, a tubular grease passing pipe is fixedly installed in the greasing gun body, and the grease passing pipe is connected with the grease gun body. The outer side of the left end of the grease passing pipe communicates with a first grease spraying pipe set and a second grease spraying pipe set which extend to the outer side of the left end of the greasing gun body, the first grease spraying pipe set and the second grease spraying pipe set are distributed on the outer side of the left end of the grease passing pipe in a staggered mode, and the other end of the first grease spraying pipe set extends to the left side of the greasing gun body. The second grease spraying pipe set extends to the outer side of the greasing gun body and is located on the left side