Edwards GMB Roots Vacuum Booster Pumps
The Edwards GMB25-40K Roots Vacuum Booster Pumps are high-capacity boosters developed for harsh applications requiring high displacement and dependable vacuum performance. The range includes GMB25K and GMB40K models, delivering swept volumes of 25,500 and 44,300 m³/h, respectively, at 3,960 rpm. Their lightweight rotor construction supports higher running speeds, while multiple backing configurations provide flexibility for large vacuum systems.
Product Specifications
| Specification | GMB25K | GMB40K |
|---|---|---|
| Displacement @ 3,960 rpm | 25,500 m³/h (15,009 cfm) | 44,300 m³/h (26,074 cfm) |
| Min Backing Capacity | 4,500 m³/h (2,649 cfm) | 6,500 m³/h (3,825 cfm) |
| Max Pressure Differential | 30 mbar (22.56 torr) | 25 mbar (18.75 torr) |
| Ultimate Pressure | <0.01 mbar (<0.008 torr) | <0.01 mbar (<0.008 torr) |
| Rotational Speed | 540–3,960 rpm | 540–3,960 rpm |
| Motor Power | IEC 30 kW / NEMA 40 hp | IEC 30 kW / NEMA 40 hp |
| Cooling Water Connection | R1/2" female | R1/2" female |
| Min Cooling Water Flow | 10 L/min (2.6 US gal/min) | 10 L/min (2.6 US gal/min) |
| Recommended Lubrication | Synthetic Ultragrade 150 | Synthetic Ultragrade 150 |
| Weight Without Motor | 1,400 kg (3,086 lb) | 2,088 kg (4,603 lb) |
GMB Roots Booster Pump Design and Features
Applications
GMB25K & GMB40K Configurations
The GMB range consists of GMB25K and GMB40K Roots vacuum booster pumps. Both models are available with standard and ATEX configurations, with IEC and NEMA options. The range also supports multiple backing configurations for large vacuum systems.
| Model | Configuration Options |
|---|---|
| GMB25K | Standard Pump, ATEX Pump, IEC, NEMA, CPI |
| GMB40K | Standard Pump, ATEX Pump, IEC, NEMA, CPI |
Talk to ACFM About GMB Vacuum Boosters
ACFM can provide information on the GMB25K and GMB40K, including available configurations and system requirements.