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A BS Series ID A_BS
The A Series combines high efficiency and reliability, low maintenance costs and a wide torque range. The right angle layout between INPUT and OUTPUT makes the A Series particularly compact. The gear set combination makes this right-angle product the most efficient and durable in Bonfiglioli's light- and medium-duty portfolio. The A 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 A Series.


  • Key benefits

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

    Surface protection up to C5
    Reinforced bearings
    Reduced Backlash
    Torque Arm
    Fluor Elastomer oil seals
    Double oil seals on input
    Taconite seals
  • Torque range

    100 ... 14,000 Nm
  • Torque range (IU)

    885 … 123,910 in-lb
  • Gear ratios

    4.9 ... 1,715
  • Certifications

    Certificate of compliance
    Inspection certificate
  • Transmissible mechanical power

    0.22 ...150kW
  • Output

    Feet and shaft mount with two bore options per size
    Solid shaft, splined hollow shaft, hollow shaft with shrink discs
  • 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 –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_ A