Heavy Duty Series


IE3 and IE4 asynchronous three phase electric motor

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Heavy Duty Series

BX and BY Heavy Duty asynchronous motors are manufactured to exceed the requirements of the most demanding industrial applications. Bonfiglioli Heavy Duty Asynchronous motors, indeed, comes with a best in class set of features: cast iron frame, C3 corrosion protection, regreasable bearings, and Shock Pulse Measurement predisposition as standard on all sizes, are only few of the characteristics that makes these motors the most suitable also in the harshest enviroments. Moreover, Heavy Duty BX and BY can be further personalized and adapted to our customers needs thanks to a wide range of available options. Additionaly, independetly by the motor size, all the BX Heavy Duty motors can be equipped with DC brake. Concluding, Heavy Duty motors are available with IEC frame and are certified to fulfill the Minimum Efficiency Performances, set by most of the worldwide countries.


EN7, EN8

Temperature sensor
E3, D3, K1

Degree of protection
Standard IP55 also for Brakemotors

Power range
IE4: 75 - 200kW
IE3: 30 - 355kW

Mounting options
IM B35

3-Phase asynchronous induction motor


  • Key benefits
    • Robustness
    • Long lifetime
    • Wide power range
    • Energy saving
    • Compliant to all the MEPS
    • Complete (Gearbox+Motor) Solution
    • Control flexibility
    • Global motor (can be utilized in most of the markets)
  • Sizes
    IE4 motors:
    • from size 280 to size 355
    IE3 motors:
    • from size 200 to size 355
  • Certifications
    IE4 motors:
    • CE/UKCA

    IE3 motors:
    • CE/UKCA
    • UL
    • CEL
    • NBR
    • EECA
    • BIS
  • Conformity
    Efficiency - IEC 60034-30:2008
    Low Voltage Directive - 2006/95/EC
    Electromegnetic Compatibility Directive - 2006/95/EC
  • Power supply & Power range
    Avaiable Voltages as Standard:
    400/690 - 50Hz
    380/660 - 50Hz
    460 - 60Hz
    440/760 - 60Hz
  • Motor options
    • Thermistors and thermostat sensors
    • Independent forced cooling
    • Heavy Duty Encoders
    • Tropicalization
    • Anti-Condensate Heaters
    • Up to IP56 protection

Types & Powers

    BY 280SCK 75
    BY 280MAK 90
    BY 315SCK 110
    BY 315SDK 132
    BY 315MBK 160
    BY 355SAK 200
    BX 200LAK 30
    BX 225SAK 37
    BX 225SBK 45
    BX 250MAK 55
    BX 280SAK 75
    BX 280SBK 90
    BX 315SAK 110
    BX 315SBK 132
    BX 315SCK 160
    BX 315MAK 200
    BX 355MAK 250
    BX 355MBK 315
    BX 355MCK 355


Product Catalogue Asynchronous Motors BX_ENG_R04_0

Leaflet Heavy Duty Motors

Product Range I&A

BX Heavy Duty Asynchronous Motors - User Manual
Other files

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