The TURBOVAC model 361C P/N 85675 is a turbomolecular pump featuring grease-lubricated bearings. This unit is engineered to pump vacuum chambers down to pressures in the high-vacuum range. A TURBOTRONIK frequency converter and a forevacuum pump are required for the operation of the TURBOVAC. These units are not suitable for operation without a forevacuum pump. The turbomolecular pumps from Oerlikon Leybold Vacuum generate a clean high and ultra-high vacuum, are easy to operate and are exceptionally reliable. In connection with a well rated backing pump, pressures below 10-10 mbar (0.75 x 10-10 Torr) can be attained.