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C SeriesIDC
Helical In-Line Gear units
The C Series is designed for the requirements of standard tasks in the industrial environment. These series achieve first-rate reliability, efficiency, robustness, and a wide output torque range. The extremely wide range of gear ratios, achieved through 2-, 3- or 4-stage versions, allows the customer to adapt the C Series to every application and to find the perfect match for output speed requirements. The C 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 C Series.


  • Key benefits

    - Minimized mounting space
    - Robustness
    - Reduced standard backlash
    - High dynamic and energy saving solution
    - Wide output speed selection range
    - ATEX gearbox for explosive environments 2G/2D
  • Main options

    Main option
    Surface protection up to C5
    Double oil seals
    Fluor Elastomer Seals
    Reduced Backlash
  • Torque range

    45 ... 12,000 Nm
  • Torque range (IU)

    398 … 106,208 in-lb
  • Gear ratios

    2.6 ... 1,481
  • Certifications

    Certificate of compliance
    Inspection certificate
  • Transmissible mechanical power

    0.09 ... 213 kW
  • Output

    Feet or flange mounting, B14 flange
    Metric or inch series solid output shaft
  • 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]
  • Motors options

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

Download Documents


Product Catalogue –In-Line Gearmotors & Units-C-ATEX

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

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

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

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

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

Spare Parts List_ C