The RL90-18/18NH from EBM-Papst is a DC-powered centrifugal fan with forward-curved blades in a 120×120×38 mm format. The fan is designed for axial air intake and radial air outlet, making it well-suited for compact blower solutions with high static pressure. With a brushless DC motor and ball bearings, it offers long service life and reliable performance.
The RL90-18/18NH is ideal for electronics cabinets, medical equipment, and industrial apparatus where a compact size, high static pressure, and quiet operation are critical requirements.
- Voltage: 48 V DC (range 36–53 V)
- Airflow: up to 54 m³/h at free air flow
- Maximum static pressure: 300 Pa
- Optimal operating point: 28 m³/h at 160 Pa
- Speed: 3500 rpm
- Power: 14.7 W
- Bearing type: ball bearing
- Motor protection: automatic restart at locked rotor and reverse polarity protection
- Connection: 310 mm cable
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Technical specifications
Datasheet (PDF) - download| Product attribute | Value |
|---|---|
| Airflow at 0 Pa | 54 m³/h |
| Speed | 3500 rpm |
| Power | 14.7 W |
| Voltage | 48 V DC VAC |
| Motor frame | The fan has dimensions of 120 x 120 x 38 mm and a mass of 0.42 kg. Mounting is done via the flanges with ISO 4762 M4 screws, degreased and without washers. The maximum tightening torque for the mounting screws is 280 Ncm in all corners. The motor shaft can be mounted in any position. |
| Casing | plastic |
| Impeller | The fan impeller is made of plastic and is designed for a centrifugal fan (blower) with axial air intake and radial air discharge. At a nominal speed of 3500 rpm, a maximum free air flow of 54 m³/h and a maximum static pressure of 300 Pa are achieved. The optimal operating point is 28 m³/h at 160 Pa. |
| Bearing type | ball bearing |
| Motor protection | automatic restart on locked rotor |
| Motor code | RL90-18/18NH |
| Rotation direction | clockwise |
| Motor type | The motor is a DC-powered brushless motor with a nominal voltage of 48 V DC and a voltage range of 36–53 V. The power consumption is 14.7 W at free air flow and nominal voltage. The motor has reverse polarity protection via a rectifier diode and automatic restart in case of locked rotor. The protection class is class III according to electrical safety standards. |
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