Helical gear reducers - cast iron

H - IH - PH - CH

Helical gear reducers - cast iron

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  • H100U-FB-300x38M-T132sB5_CAM 1 maxi
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Designed to offer maximum reliability even in the harshest operating conditions, the H product series guarantees complete versatility and is suitable for applications that require high radial loads. 
The H-series includes a large number of extremely versatile models, in cast iron (sizes 030 to 140).

Certifications Available: ATEX 2GD/3GD

Warranty: Two years from date of delivery. 

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  • Sizes: 030-040-050-060-080-100-125-140
  • Available versions: H - fitted for motor coupling, IH - with input shaft, CH - with compact motor, PH - fitted for motor coupling with flexible joint
  • Casing with feet, flange F or universal U
  • Power up to 45 kW
  • Gears hardened and tempered with shaved or ground profile 
  • Gearing with 1, 2 and 3 reduction stages 
  • Reduction ratios between 1,23 and 282,10
  • Torque max 8.000 Nm and admissible radial loads max 55.000 N 
  • Cases in G200 grey cast iron for high strength and optimized with FEM analysis
  • Load capacity calculated to ISO 6336 and verified according to AGMA 2001
  • Painted with RAL 5010 blue epoxy-polyester powder 
  • Accessories: output flange, backstop device, viton oil seals

To enable us to identify the correct product for your requirements please complete the below form.

The highlighted fields are mandatory.

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Motor Type

Motor Information
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Protection degree

Gearbox speed (rpm)

Speed range (rpm)

Required torque (max/average)

Description of the application

Stop-Starts/Hr (Qty) - Duty


Casing version

Gearbox mounting

Mounting position (see catalogue)

Loading (Please refer to the “Service Factor” paragraph on the catalogue)

Fr/Fa radial/axial load

Connection(direct, coupling, belt drive, chain...)

Minimum Service Factor required

Certifications/ Regulations required

Presence of external heat sources ((from sun, environment and/or machines)

Installation environment
Type of atmosphere
The following information is useful and necessary to identify the correct product according to the European ATEX Directive 94/9/CE. Please, fill the blank spaces of this document. Important note: Motovario cannot supply products for Atex 1D/1G or Zone 0

Type of zone

Permitted surface temperature
GAS (Temperature class)


Motovario, if above information is provided, can confirm harmonization to EN1127-1 and from EN13463-1 to EN13483-8 for: H/HA Series - Helical gear reducers, B/BA Series - Helical bevel gear reducers, S Series - Shaft mounted gear reducers, NMRV/NMRV-P Series - Worm gear reducers.
In case of order, the information above must be provided to enable the supply of the product necessary certification, file number and data for the nameplate.
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