Scroll vacuum pumps consist of both a set and an orbiting scroll. As the orbiting scroll movements, voids are manufactured at the inlet of the pump, drawing in the gas. As the rotor additional moves, the gas is certainly steadily compressed until it really is discharged to atmosphere at the pump exhaust.
The 
scroll pump design provides 100% oil-free operation as it will not require any lubrication. The bearings are separated from the compression chamber so no Scroll Vacuum Pump contamination of the pumped gas is possible. In addition, the leak-tight design helps prevent contamination of the pumped gas by ambient air flow. Maintenance is bound to changing the scroll tip seals which can be very easily completed by the operator and without the need for special tools.