Torque Range

Industrial Planetary Gearmotors & Units

Bonfiglioli's 300M Series is an outstanding solution for all heavy-duty applications where compactness is not an option. Thanks to its modular design, the 300M Series can be customized to match an extremely wide range of applications. Bonfiglioli's expertise in planetary technology ensures high-quality product design and manufacturing procedures. The 300 Series operates without unwanted downtime even in the harshest environments. This planetary gearbox achieves top-class flexibility thanks to several outputs, as well as input configurations available for all 20 sizes. The 300M Series can be completed with a wide range of electric motors entirely manufactured by Bonfiglioli. Asynchronous motors (BN-BE-BX/M-ME-MX) can be coupled with 300M Series gearboxes, providing our customers a complete solution.


Key Benefits

  • High torque density
  • Extreme speed reduction and high output torque
  • Low maintenance cost
  • Extremely customizable
  • High customization level
  • Flexibility
  • ATEX per explosive atmosphere 2G/2D


Main Options

  • In line/right angle version
  • Independent cooling unit
  • Patented integrated cooling solution
  • Taconite seals
  • ATEX certification for explosive environments


Torque Range

1,250...1,286,700 Nm


Gear Ratios

3.4 ... 2,916



  • Certificate of compliance
  • Inspection certificate
  • ATEX


Brake Options

  • Negative multi-disk brake



  • Foot or Flange mounted
  • Splined shaft (solid, heavy duty, hollow, hollow with axial bloackage device)
  • Solid keyed shaft (solid, heavy duty, stirrer/mixer version)
  • Hollow shaft with double keyway or shrink disk



Input with solid shaft

Input with e-motor coupling:

  • M, ME, MX [compact asynchronous]
  • BN, BE, BX [IEC asynchronous]
  • BSR [IEC reluctance]
  • BS [IEC single phase]


Motor Options

  • Thermistors and thermostat sensors
  • Independent forced cooling
  • Incremental, sin/cos absolute single/multi-turn encoders
  • Tropicalization
  • Anti-condensate heaters
  • Backstop


Highly transmissible torque/weight ratio

Combined version (HD, A, W/VF series)

High quality standards

High shock resistance

Wide range of options and accessories

Electric and hydraulic motor compatible

Built-in cooling fan

ATEX version 2G/2D

Type File Size
Brochure   GR Bonfiglioli Offerings   688.85 Kb   View   Download
Catalogue   Planetary gearboxes - 300M Industrial Series   81.37 Mb   View   Download
Brochure   Planetary Drive 300M Series   77.31 Kb   View   Download
Catalogue   S/H Combined Gearboxes   1.28 Mb   View   Download
Brochure   Heavy Industry Solutions   564.19 Kb   View   Download

Authorized Distributor For: