Product Description
Stokes 61B Horizontal gas flow — 10 hp energy-efficient motor
New 61B mechanical booster • Part 90061BMH10EE
The Stokes 61B 6-inch mechanical booster is a rugged industrial Roots booster available with mechanical-seal or process-isolation arrangements and horizontal or vertical gas flow.
Features
- Bare-shaft and direct-drive configurations
- Horizontal or vertical gas-flow orientation
- Mechanical-seal and five-seal process-isolation arrangements
- Large sight glass and magnetic drain plugs simplify maintenance
Performance Graph
The graph is a VPS presentation of published Edwards family data. Confirm operating point, backing-pump capacity, process gas and motor selection before ordering.
Technical Specifications
| Specification | Value |
|---|---|
| Model | 61B |
| Part number | 90061BMH10EE |
| Selected configuration | Stokes 61B Horizontal gas flow — 10 hp energy-efficient motor |
| Nominal displacement | 2,210 m³/h at 1,800 rpm; 3,375 at 2,750 rpm; 3,685 at 3,000 rpm; 4,420 at 3,600 rpm |
| Maximum pressure differential | Bypass configuration; confirm process differential with VPS |
| Inlet connection | ASA/ANSI 8" |
| Outlet connection | ASA/ANSI 8" |
| Motor / drive | Configuration dependent; 7.5–18 kW (10–25 hp) |
| Cooling | Air or water cooled, depending on shaft-seal/process-isolation configuration |
| Sound level | |
| Typical weight | Approx. 625–1,185 lb, configuration dependent |
| Typical dimensions | Verify orientation-specific drawing before installation |
| Lubricant capacity | 1.9 L horizontal flow; 4.1 L vertical flow |
Available Configurations
| Part number | Configuration | Electrical / drive | Gas flow | Availability |
|---|---|---|---|---|
| 900-61B-MVR | Stokes 61B Vertical gas flow — Mechanical-seal bare shaft | Bare shaft; select compatible motor and drive | Vertical gas flow | Call for Pricing |
| 900-61B-MHR | Stokes 61B Horizontal gas flow — Mechanical-seal bare shaft | Bare shaft; select compatible motor and drive | Horizontal gas flow | Call for Pricing |
| 900-61B-5VR | Stokes 61B Vertical gas flow — Process-isolation bare shaft | Bare shaft; select compatible motor and drive | Vertical gas flow | Call for Pricing |
| 900-61B-5HR | Stokes 61B Horizontal gas flow — Process-isolation bare shaft | Bare shaft; select compatible motor and drive | Horizontal gas flow | Call for Pricing |
| 90061BMV10EE | Stokes 61B Vertical gas flow — 10 hp energy-efficient motor | 10 hp, 230/460V, 3-phase, 60 Hz | Vertical gas flow | Call for Pricing |
| 90061BMV25EE | Stokes 61B Vertical gas flow — 25 hp energy-efficient motor | 25 hp, 230/460V, 3-phase, 60 Hz | Vertical gas flow | Call for Pricing |
| 90061BMH10EE | Stokes 61B Horizontal gas flow — 10 hp energy-efficient motor | 10 hp, 230/460V, 3-phase, 60 Hz | Horizontal gas flow | This configuration |
| 90061B5V25EE | Stokes 61B Vertical gas flow — 25 hp process-isolation bypass | 25 hp, 230/460V, 3-phase, 60 Hz | Vertical gas flow | Call for Pricing |
| 90061B5H25EE | Stokes 61B Horizontal gas flow — 25 hp process-isolation bypass | 25 hp, 230/460V, 3-phase, 60 Hz | Horizontal gas flow | Call for Pricing |
Maintenance, Oil & Repair Kits
| Item | Guidance |
|---|---|
| Lubricant | Stokes V-Lube H or approved equivalent. |
| VPS service kit | Stokes 615 counter-clockwise repair kit 424096002CCW |
| Service note | Confirm rotation, horizontal/vertical flow orientation and seal arrangement before selecting a kit. |
Applications
Mechanical boosters are used to increase pumping speed and reduce pump-down time in industrial vacuum systems. Typical duties include heat treatment, metallurgy, vacuum coating, chemical processing, steel degassing, vacuum drying and large chamber evacuation. Final performance depends on the backing pump and system conductance.
VPS Resources
Need help sizing the booster system?
Send the required pumping speed, pressure range, backing pump, process gas, voltage, frequency, gas-flow orientation and seal requirements. VPS will help confirm the correct part number.
