Description
ebm-papst R1G225-AF07-52 (also known as R1G225AF0752) is an unhoused backward-curved motorized centrifugal impeller driven by an electronically commutated M1G074-BF brushless DC motor, measuring Ø225 mm × 99.00 mm (Ø8.86 in × 3.90 in). Operating across a nominal 24 VDC input (16 to 28 VDC range), it delivers 663 CFM (1,126.5 m³/h) of high-efficiency airflow at 2600 RPM while consuming 100 W with a nominal draw of 4.6 A. Engineered with seven glass fiber-reinforced PA66 blades, dual precision ball bearings, and a rugged black-coated rotor, it provides IP42 protection with integrated reverse polarity, soft start, and locked-rotor safety. System interconnection is achieved through four 20 AWG wire leads with crimped brass splice terminals, supporting both 0–10 V / PWM speed control and active tachometer feedback.
Key Features
- Electronically Commutated Motor: Delivers superior energy efficiency and thermal reliability utilizing an integrated brushless DC M1G074-BF drive.
- Aerodynamic Impeller Design: Features seven backward-curved PA66 fiberglass-reinforced blades engineered to overcome high back pressure in compact plenums.
- Dynamic Control Interface: Accepts linear 0–10 VDC or PWM input signals alongside an open-collector tachometer speed monitor.
- Heavy-Duty Mechanical Build: Utilizes dual precision ball bearings and an all-position mounting architecture rated for continuous S1 operation.
- Built-In Electronic Protection: Integrates reverse polarity safeguards, motor current limiting, locked-rotor shutdown, and gentle soft-starting functionality.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | R1G225-AF07-52 |
| Alternate Part Number | R1G225AF0752 |
| Internal Item Number | 50980-5-9980 |
| Integrated Motor Model | M1G074-BF |
| Product Series | R1G225 |
| Product Category | EC Centrifugal Fans |
| Fan / Component Type | Motorized Impeller (Backward-Curved, Single Inlet) |
| Supply Type | DC Brushless |
| Rated Voltage | 24 VDC |
| Operating Voltage Range | 16.0 to 28.0 VDC |
| Rated Speed | 2600 RPM |
| Power Input | 100 W |
| Rated Current | 4.6 A |
| Airflow | 663 CFM (1,126.5 m³/h) |
| Noise Level | 67.0 dB(A) |
| Airflow Direction | Centrifugal (Radial Discharge) |
| Impeller Diameter | 225 mm (8.86 in) |
| Overall Depth / Thickness | 99.00 mm (3.90 in) |
| Number of Blades | 7 |
| Impeller Material | PA66 Plastic (Fiberglass-Reinforced) |
| Rotor Surface | Coated in Black |
| Bearing Type | Dual Ball Bearings |
| Direction of Rotation | Clockwise (Seen on Rotor) |
| Mounting Position | Any (Universal Orientation) |
| Operating Mode / Duty Cycle | Continuous (S1) |
| Weight | 1.5 kg (3.31 lbs) |
| Mounting Screw Depth | Max. 6 mm |
| Optional Inlet Nozzle Accessory | Part No. 96358-2-4013 |
| Termination & Cable Specs | 4-Conductor Cable, 20 AWG, Brass Lead Tips Crimped |
| Cable Exit | Variable |
| Wiring Pinout / Connection | Pin 1 (Red): +24 VDC Power Supply (Ripple 3.5%) | Pin 2 (Yellow): 0-10 VDC / PWM Control Input (Re > 100 kΩ) | Pin 3 (White): DUE Tachometer Output (3 pulses/rev, Isink max 10 mA) | Pin 4 (Blue): GND Reference Ground |
| Control Features | 0-10 VDC / PWM Speed Control Input, Speed Monitoring Tach Output, Soft Start, Motor Current Limit |
| Motor Protection | Reverse Polarity Protection, Locked-Rotor Protection, Current Limiting |
| Insulation Class | Class B |
| Ingress Protection (IP) | IP42 |
| Humidity Class | F0 |
| EMC Interference Emission | According to EN 55022 (Class B) |
| EMC Interference Immunity | According to EN 61000-6-2 (Industrial Environment) |
| Operating Ambient Temperature | -25 °C to +60 °C (-13 °F to +140 °F) |
| Storage Ambient Temperature | -40 °C to +80 °C (-40 °F to +176 °F) |
| Conforming Standards | EN 60950-1 |
| Agency Approvals | UL 1004-1, CSA C22.2 No. 77, EAC, RoHS3 Compliant |
Applications
ebm-papst R1G225-AF07-52 motorized impellers provide high-efficiency forced-air circulation across telecommunications power shelves, cellular base station battery enclosures, and server cabinet heat exchangers. They are extensively deployed as primary cooling blowers inside cleanroom fan filter units (FFUs), railway electronic cabinets, and commercial building heat recovery ventilation (HRV) plenums. Facility maintenance teams and OEM engineers also integrate this unhoused centrifugal assembly into medical diagnostic systems, variable speed drive plenums, and uninterruptible power supply (UPS) inverter enclosures.
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