Ace Glass 8061-04 19 mm Shaft 45/50 High Speed Vacuum Trubore Bearing

Used with 8111 aluminum packing box. For shaft speeds of 1000 rpm. and higher, and vacuum operation down to 0.5 mm Hg. The seal is made entirely by the packing box. Only infrequent lubrication is required using 8122 packing and 8117 Stir-Lube®. Ace Glass recommends that you use 8113 vacuum adapter to avoid contaminating the flask contents with lubricant.