The RD pumps are positive displacement roots vacuum pumps. The pump bearings, gears and seals are lubricated by oil fed from oil reservoirs at either ends of the roots pump. A series of seals stops the oil from reaching the vacuum side of the pump. Roots pumps helps in shifting the operating pressure to a high vacuum range due to rotation of gear timed rotors in opposite directions. Roots vacuum pumps are capable of improving the attainable ultimate pressure of a pump system by a factor of 10.
Particulars | Unit | RD250 | RD500 | RD1000 | RD1500 | RD3000 |
---|---|---|---|---|---|---|
Nominal pumping speed @ 50Hz | m3/hr (L/min) | 250 (4167) | 500 (8300) | 1500 (25000) | 1500 (25000) | 3000 (50000) |
Maximum pumping speed with backing pump | m3/hr (L/min) | 170 (2833) ED30A | 370 (6167) FD60 | 1020 (17000) SP300 | 1350 (22500) DP300 | 2250 (37500) 2XSP300 |
Ultimate total pressure | mbar (Torr) | 5x10-4 (3.75x10-4) | 5x10-4 (3.75x10-4) | 2x10-2 (1.5x10-2) | 5x10-3 (3.75x10-3) | 2x10-2 (1.5x10-2) |
Recommended backing pumps | ED30 | FD60, SP100 * | SP300 * | SP300 * | 2 X SP300 | |
Maximum allowable pressure difference | mbar (Torr) | 80 (60) | 80 (60) | 65 (49) | 65 (49) | 30 (23) |
Permissible cut-in pressure | mbar (Torr) | 30 (22.5) | 30 (22.5) | 30 (22.5) | 30 (22.5) | 30 (22.5) |
Motor power rating | kW (HP) | 1.1 (1.5) | 1.5 (2) | 3.7 (5) | 3.7 (5) | 7.5 (10) |
Nominal rotational speed @ 50Hz | rpm | 3000 | 3000 | 3000 | 3000 | 3000 |
Weight | kg (lb) | 97 (214) | 127 (280) | 275 (605) | 275 (605) | 450 (990) |
Inlet Connection | ISO 63 | ISO 100 | ISO 160 | ISO 160 | ISO 160 | |
Outlet Connection | ISO 63 | ISO 100 | ISO 100 | ISO 100 | ISO 160 | |
Cooling medium | Air | Air | Air | Water | Water | |
Oil capacity | Lts | 0.9 | 0.9 | 2 | 2 | 2 |
Recommended oil | HHVP make | MD-504 / Equivalent | ||||
Electrical | 3 Phase 380-440V (50Hz) |