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罗茨泵
PMB-C 系列
PMB-060C
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大型PMB系列、是采用皮带驱动的低速运转的罗茨泵。
与坚固的摇动活塞型油回转真空泵组合使用、在金属、汽车产业应用最多，在化学、医药、食品等产业也有广泛应用。
与坚固的摇动活塞型油回转真空泵组合使用、在金属、汽车产业应用最多，在化学、医药、食品等产业也有广泛应用。
特点
- 由于没有润滑油，因此对于水蒸气和溶剂等的蒸汽，也可以具有稳定性。
- 可以选择排气方向。 增加了设备设计的自由度，并且可以使设备更紧凑。
用途
真空炉等的大型腔体排气
规格
| Model | PMB-040C | PMB-060C | |
| Actual pumping speed *1 | 50Hz | 3800m3/h (63300L/min) |
6200m3/h (103300L/min) |
| 60Hz | |||
| Maximum suction pressure | 50Hz | 8.0 x 102Pa | |
| 60Hz | |||
| Ultimate pressure *2 | 6.7 x 10-1Pa | ||
| Allowable drive pressure | 1.0 x 10-3Pa | ||
| Motor (number of poles) *3 | 15kW (4P) | 18.5kW (4P) | |
| Oil *4 | ULVOIL R-7 | ||
| Oil capacity | 8.0L | ||
| Cooling water | Cooling method | Water cooling | |
| Primary side pressure | 0.1～0.3MPa | ||
| Inlet/outlet differential pressure | 0.05MPa | ||
| Cooling water volume | 10L/min | ||
| Cooling water temperature | 5 to 30℃ | ||
| Suction diameter JIS B 2290 | Corresponds to VG250 | Corresponds to VG300 | |
| Exhaust port diameter JIS B 2290 | Equivalent to VF150 | Equivalent to VF200 | |
| External dimensions L x W x H *5 |
772 x 1182 x 680mm | 772 x 1452 x 680mm | |
| Weight | 970kg (without motor) |
1100kg (without motor) |
|
| Standard backing pump | PKS-070 | PKS-070 x 2 | |
| Note） | SI units are used in this specification. The following conversion can be used for non-SI units. Ultimate pressure：6.7×10-1 Pa = 5×10-3 Torr, Pressure：0.05/0.1/0.2/0.3 Mpa = ~0.5/0.1/2/3 atmospheres |
| *1 | Measured value at 13 Pa |
| *2 | Measured by pirani vacuum gauge (with standard backing pump and oil). The value would be 6.7 x 10-2 Pa when measured with a McLeod vacuum gauge. |
| *3 | 00 VAC 50/60 Hz; 200 VAC 60 Hz; 3-phase |
| *4 | Pump oil types other than the standard type are available. Contact ULVAC. |
| *5 | W = width, D = depth, H = height |
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