Purchase now: Bonfiglioli BN 80A 6 AC Electric Motor
Purchase now: Atlantechdrives provides you the BN 80A 6 230/400-50 IP55, an exceptionally rugged and highly reliable three-phase asynchronous AC induction motor manufactured by the global power transmission experts at Bonfiglioli. Designed to comply strictly with IEC international dimension standards, the BN series is universally recognized for its unparalleled durability in severe industrial applications. This specific model is built on an IEC 80A aluminum frame. Most importantly, it features a highly specialized 6-pole stator winding. Operating at a standard 50Hz frequency, it delivers a synchronous speed of 1000 RPM (typically running around 920-960 RPM under nominal full load). This lower base rotational speed generates vastly superior starting and running torque compared to standard 4-pole (1500 RPM) motors of the same horsepower rating. This makes it the absolute ideal prime mover for heavy-duty agitators, massive industrial mixers, slow-moving crushers, and high-torque conveyor drives where mechanical force is prioritized over raw speed. Encased in a thermally optimized housing with an IP55 protection rating, it effectively repels abrasive factory dust and low-pressure water jets, ensuring continuous uptime in harsh manufacturing environments.
Technical Specifications of the BN 80A 6 Motor
This industrial motor utilizes premium-grade copper windings and high-quality Class F electrical insulation, ensuring it can withstand significant internal heat generation without electrical breakdown during heavy starting loads. The dynamically balanced rotor guarantees silent, vibration-free 24/7 operation.
- Part Number: BN 80A 6 230/400-50 IP55
- Motor Type: 3-Phase AC Induction Motor
- Frame Size: IEC 80A (Lightweight aluminum construction)
- Number of Poles: 6-Pole (1000 RPM synchronous speed at 50Hz)
- Voltage Requirement: 230V Delta (Δ) / 400V Star (Y)
- Frequency: 50 Hz
- Protection Rating: IP55 (Dust-tight and water jet protected)
- Cooling Method: IC411 (Totally Enclosed Fan Cooled – TEFC)
Expert Installation Advice: 6-Pole Dynamics and Terminal Wiring
Understanding the mechanical output and electrical wiring of your motor is critical for preventing catastrophic failure. Expert Tip: Because this is a 6-pole motor (1000 RPM), it provides approximately 50% more rotational torque for the same horsepower rating than a standard 4-pole motor. When integrating this motor with a gearbox, you must calculate your final output speed and torque based on this lower 950 RPM operational base speed. Furthermore, the motor’s nameplate explicitly states «230/400V». This dictates that the individual copper coils inside the stator are engineered to handle a maximum of 230 Volts. If your factory provides a standard 400V 3-phase power supply, you must arrange the brass terminal links inside the junction box into the «Star» (Y) configuration to safely distribute the voltage. Incorrectly wiring this motor in Delta (Δ) at 400V will melt the copper insulation within seconds, causing a severe electrical short.
Maintenance and VFD Compatibility at Low Speeds
The BN 80A 6 features robust Class F insulation, making it highly suitable for operation with Variable Frequency Drives (VFDs) or inverters. However, because it is a TEFC (Totally Enclosed Fan Cooled) motor, the rear plastic fan is directly attached to the rotor shaft. If you use a VFD to run this already slow 6-pole motor at exceptionally low frequencies (below 20 Hz) under heavy load, the fan will not push enough air over the cooling fins to dissipate the heat generated by the copper losses. For continuous, high-torque low-speed operation, you must install an external forced-ventilation unit (servo-fan) to prevent thermal tripping and bearing failure.
Frequently Asked Questions (FAQs)
Q: Can I safely run this 50Hz motor on a 60Hz power grid?
A: Yes. Most Bonfiglioli 50Hz motors can safely operate on a 60Hz grid. However, the synchronous speed will increase by 20% (from 1000 RPM to 1200 RPM), and you must adjust your driven machine’s gearing to compensate for the higher rotational output.
Q: What does the «A» mean in the 80A frame size?
A: The IEC 80 frame size dictates the physical dimensions (shaft height, bolt hole spacing). The «A» designates the specific power rating (core length) within that 80 frame geometry, providing a slightly lower horsepower rating than the extended «B» variant.
Do you need more references from this brand? Explore our full catalog of Bonfiglioli here.
For optimal torque control in slow-moving industrial applications, this 6-pole asynchronous motor is engineered to seamlessly drive compact units like the VF 30 F1 10 P63 B5 worm gearbox.
