Bearing Packer - Head Only Bearing packer head only for bench mounting or attachment to any Lincoln air operated economy, Series 20 or Series 40 grease pump. Services bearings 1-3/4 to 9-1/2 OD with minimum ID of 9/16. Accepts grease through fitting from high-pressure control valve or hand . For bench mount use 1/2 pipe flange. 102891 No -