Scroll vacuum pumps contain both a fixed and an orbiting scroll. As the orbiting scroll techniques, voids are created at the inlet of the pump, drawing in the gas. As the rotor further moves, the gas is 
Scroll Vacuum Pump 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 contamination of the pumped gas can be done. Furthermore, the leak-tight design aids in preventing contamination of the pumped gas by ambient surroundings. Maintenance is limited to changing the scroll tip seals which may be very easily performed by the operator and without the need for special tools.