F Series

Helical Parallel-Shaft Gearmotors & Units

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F Series

The F Series is an outstanding solution for customers looking for a drive that can maximize mounting flexibility. Thanks to the housing's lateral holes, the F Series can also be side mounted directly into the machine, in addition to all the conventional mounting positions. This gearmotor guarantees elevated efficiency, reliability and low-noise operation. High torque density, a range of wide gear ratios and a compact design complete the F Series' characteristics. The F Series can be completed with a wide range of electric motors entirely manufactured by Bonfiglioli. Asynchronous motors both IEC and compact (BN-BE-BX/M-ME-MX), servomotors (BMD) and reluctance motors (BSR) can be coupled with the F Series.


Torque range
1,239 … 123,910 in-lb

Torque Range

Torque range
140 ... 14,000 Nm

Gear ratios
6.4 ... 2,099

Transmissible Mechanical Power
0.09 ... 123 kW


  • Key benefits
    • High mounting flexibility
    • Minimized mounting space
    • Robustness
    • Reduced standard backlash
    • High dynamic and energy saving solution
    • Wide output speed selection range
    • (ATEX) gearbox for explosive environnements 2G/2D
  • Main options
    • Backstop
    • Reduced backlash
    • Lateral holes for side mounting
    • Torque arm (with anti-vibrating bushings)
  • Certifications
    Certificate of compliance
    Inspection certificate
  • Output
    Keyed hollow shaft - Two dimensions for each size
    Keyless shrink disc fitting
    Plug-in solid output shaft as an option
    Quick fit
  • Motors
    Input with solid shaft
    Input with e-motor coupling:
    • M, ME, MX [compact asynchronous]
    • BMD [servo permanent magnet]
    • BSR [IEC reluctance]
    • BN, BE, BX [IEC asynchronous]
    • BS [IEC single phase]
  • Motor options
    Thermistors and thermostat sensors
    Independent forced cooling
    Incremental, sin/cos absolute single/multi-turn encoders
    Anti-condensation heaters


Product Catalogue –Industrial Gearmotors-C-A-F-S-IE2-IE3

Product Catalogue –Industrial Gearmotors-C-A-F-S-NEMA

Product Catalogue –Industrial Gearmotors-C-A-F-NEMA

Product Catalogue –Parallel Industrial Gearmotors-C-A-F-S


Selection Of Gearboxes- Industrial Gearmotors-C-A-F-S-VF-W

Product Range I&A

Spare Parts List_ F
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