3/H Series

Combined Planetary/Helical Bevel Heavy Duty Gear Units

Download documents

3/H Series

The Bonfiglioli 3/H Series combines the high torque density of planetary gear units with the robustness and high-speed operation of the helical bevel heavy-duty products. This configuration can provide great power transmission in a very compact space, thanks to its angular layout. The 3/H Series can also come with a set of features such as hydraulic couplings or cooling circuits, adapted according to customers' needs..


Torque range
1,194,850 … 15,488,805 in-lb

Torque Range

Torque range
135,000 ...1,750,000 Nm

Gear ratios
89.1... 1,070

Certificate of compliance
Inspection certificate


  • Key benefits
    • Extremely high transmissible torque and power
    Suitable for all heavy-duty applications
    • High shock resistance
    • Reliability
    • Easy maintenance
    • High customization level
  • Main options
    Auxiliary thermal devices
    Forced Lubrication
    Backstop devices
    Torque arm
    Base plates
    Fluid couplings
    Shoe brakes

    Furthermore, special, complete and custom Power pack solutions are available as per customer needs.
  • Output
    Solid cylindrical shaft
    Solid shaft with keyway
    Solid shaft with supporting feet
    Solid shaft with keyway and supporting feet
    Hollow shaft with shrink disc
    Hollow shaft with keyway
  • Motors
    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
    Anti-condensation heaters


Brochure Heavy Duty

Product Catalogue –Right Angle Gearmotors & Units-3H

Product Range I&A

Download technical documentation

Register now to download the following documents

After having read the privacy disclosure:
By marking the relevant box below, I hereby authorise the company to process my contact data (information on my name, place and date of birth, tax code, address, telephone number, mobile telephone number, e-mail address) for marketing and advertising communication purposes, on promotional sales initiatives, trade fairs and events, receipt of newsletters, carried out using automated contact means (e-mail) and traditional contact means (for example, telephone call with an operator) or for market research and statistical surveys.

I may revoke my declaration of consent at any time to the company for future marketing communications by writing to corporatemkt@bonfiglioli.com

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.