G2E120-AR77-01 ebm-papst: Compact Centrifugal Blower
The G2E120-AR77-01 differs significantly from the R-series fans. It is a single-inlet centrifugal blower housed in a galvanized sheet steel scroll (snail shell). This design uses forward-curved blades (Sirocco type), which accelerate the air to high velocities, converting dynamic pressure into static pressure within the scroll housing. The G2E120-AR77-01 is specifically designed for localized cooling, boiler burners, and component extraction where directed airflow is required via a flange outlet.
Detailed Technical Data
- Impeller Diameter: 120 mm.
- Housing Type: Scroll / Volute housing included.
- Voltage: 230 VAC (Single-phase, 50/60 Hz).
- Motor: M2E068-BF (High speed 2-pole).
- Capacitor: Integrated or external (check wiring).
- Mounting: Flange for duct connection.
Maintenance & Application Insights
Lifecycle State: Active. A critical spare part for gas burners and pellet stoves due to its high pressure relative to size. Diagnosis: A common failure mode in boiler applications is bearing seizure due to heat soak-back when the system turns off. Listen for high-pitched squealing. Also, check the capacitor if torque is low. Installation Advice: Ensure the outlet flange gasket is intact to prevent pressure leaks. Because it uses forward-curved blades, do not operate «free blowing» (without resistance) for long periods, as the motor can draw excessive current (overloading). It relies on system backpressure to operate at its nominal point. Compatibility: Fully compatible with standard burner control units and Siemens LOGO! relays. It provides the necessary combustion air or draft induction for industrial processes.
| Parameter | Value |
|---|---|
| Speed | 2350 RPM |
| Airflow | 260 – 300 m³/h |
| Power Input | 80 W |
| Outlet Dimensions | Standard Flange (Check drawing) |
Why Forward Curved?
Forward curved blowers deliver the maximum air volume for a given physical size, making the G2E120 ideal for tight spaces inside machinery.
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