Description
The ebm-papst R2E133-BH66-07 (also known as R2E133BH6607) is an unhoused backward-curved AC motorized centrifugal impeller measuring 133 mm (5.24 in) in diameter by 73 mm (2.87 in) in depth, powered by an integrated M2E052-BF single-phase external rotor motor. Operating on a nominal 230 VAC 50/60 Hz supply with a 1.0 µF run capacitor, it delivers nominal speeds of 2700 RPM (50 Hz) and 3200 RPM (60 Hz), yielding airflows up to 240 m³/h (141.3 CFM) and 280 m³/h (164.8 CFM) under power consumptions of 25 W and 28 W respectively. The mechanical structure features a fiberglass-reinforced PA 6 composite 7-blade impeller mounted to a die-cast aluminum rotor supported by dual precision ball bearings. Electrical safety and reliability are ensured through internally wired thermal overload protection (TOP), an IP44 rating, Class B insulation, and a flexible PVC flying lead connection with crimped brass splice terminals.
Key Features
- External Rotor Design: Features an integrated M2E052-BF permanent split capacitor motor ensuring compact axial depth and balanced operation.
- Aerodynamic PA6 Impeller: Injection-molded 7-blade backward-curved composite wheel engineered for high static pressure development and quiet airflow discharge.
- Dual Ball Bearings: Heavy-duty sealed ball bearing system guarantees maintenance-free continuous S1 duty across all installation orientations.
- Integrated Motor Protection: Built-in thermal overload protector wired internally shields the winding against locked-rotor and over-temperature faults.
- Robust Environmental Sealing: Rated IP44 with Class I electrical safety, low touch leakage current, and moisture-resistant rotor encapsulation.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | R2E133-BH66-07 |
| Alternate Part Number | R2E133BH6607 |
| Item Number | 10276-5-9980 |
| Integrated Motor Model | M2E052-BF |
| Product Series | R2E133 |
| Product Category | AC Centrifugal Fans |
| Fan / Component Type | Motorized Impeller (Backward-Curved Centrifugal Fan, Unhoused) |
| Phase & Supply Type | 1~ Single-Phase AC |
| Rated Voltage | 230 VAC |
| Frequency | 50 / 60 Hz |
| Speed (RPM) | 2700 RPM (50 Hz) / 3200 RPM (60 Hz) |
| Free-Air Speed (rfa) | 2735 RPM (50 Hz) / 3200 RPM (60 Hz) |
| Power Rating | 25 W (50 Hz) / 28 W (60 Hz) |
| Rated Current | 0.11 A (50 Hz) / 0.13 A (60 Hz) |
| Motor Run Capacitor | 1.0 µF |
| Capacitor Voltage Rating | 400 VDB |
| Capacitor Safety Standard | P0 (CE) |
| Airflow | 141.3 CFM (240 m³/h at 50 Hz) / 164.8 CFM (280 m³/h at 60 Hz) |
| Min. Back Pressure | 0 Pa (0 in H₂O) |
| Max. Static Pressure (Curve Limit) | 0.562 in H₂O (140 Pa at 50 Hz) / 0.722 in H₂O (180 Pa at 60 Hz) |
| Data Definition Mode | rfa (Running at free air) |
| Impeller Diameter | 133 mm (5.24 in) |
| Total Depth / Thickness | 73.00 mm (2.87 in) |
| Number of Blades | 7 |
| Impeller Material | PA plastic 6, fiberglass-reinforced |
| Rotor Surface | Cast in aluminium |
| Bearing Type | Dual Ball Bearings |
| Direction of Rotation | Clockwise, seen on rotor |
| Installation / Mounting Position | Any orientation |
| Screw Depth | Max. 5 mm |
| Operating Mode / Duty Cycle | S1 (Continuous operation) |
| Termination & Cable Specs | 4-wire PVC cable line with crimped brass lead tips |
| Cable Exit | Variable |
| Wiring Pinout / Connection | U1 = Blue, Z = Brown, U2 = Black, PE = Green/Yellow |
| Optional Accessory | Inlet nozzle 09566-2-4013 (sold separately) |
| Motor Protection | Thermal overload protector (TOP) wired internally |
| Ingress Protection (IP) | IP44 |
| Electrical Protection Class | Class I |
| Insulation Class | Class B |
| Touch / Leakage Current | < 0.75 mA (IEC 60990) |
| Max. Ambient Operating Temperature | 55 °C / 131 °F (50 Hz), 65 °C / 149 °F (60 Hz) |
| Min. Ambient Operating Temperature | -25 °C (-13 °F) |
| Permissible Storage Temperature Range | -40 °C to +80 °C (-40 °F to +176 °F) |
| Standards & Compliance | CE, EN 60335-1, CCC, EAC, GOST, RoHS3 |
Applications
The ebm-papst R2E133-BH66-07 backward-curved motorized impeller is purpose-engineered for integration into compact ventilation plenums, cleanroom fan filter units (FFUs), and residential heat recovery ventilation (HRV/ERV) modules. It serves as a high-reliability exhaust and intake air mover in laboratory bio-safety cabinets, commercial air purifiers, and duct-mounted air filtration stages. Industrial OEMs and facility maintenance engineers also utilize this unit for targeted thermal dissipation within electrical power conversion cubicles, inverter cabinets, and medical equipment cooling enclosures.
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