Varvel Worm Gearbox - F RS 28 - Output Shaft Ø14mm

Ref: F RS 28 Ø14

The Varvel FRS28 worm gearboxis a compact model with a round aluminum casing, designed to provide efficient speed reduction while increasing output torque. Its compact design facilitates integration into small spaces, making it particularly suitable for conveying, automation, and small industrial machinery applications.

It features a Ø14 mm hollow output shaft, allowing for simple and reliable direct transmission without the need for complex coupling.

The gearbox can be installed in several configurations to adapt to all mechanical constraints: direct mounting on a PC version frame, flange mounting (FA or FL type) with standardized center distances, foot mounting, or installation with a torque arm equipped with silent blocks to absorb mechanical forces and vibrations. These solutions ensure flexible, stable, and durable integration on most industrial equipment.

Compatible motors for this gearbox are standardized IEC 56 and IEC 63 three-phase asynchronous electric motors, selected based on the required power and torque.

To ensure perfect compatibility during a replacement, it is recommended to provide the nameplate of the existing gearbox, which allows for precise identification of the technical equivalent or an optimized solution suited to the application.

  • Power

    20 Nm

Documentation technique :

Our Varvel F RS28 worm gear reducer, ideal for equipping all types of industrial and agricultural applications.

Our Varvel F RS28 worm gear reducer is a compact, robust, and versatile transmission solution, designed to meet the requirements of a wide range of industrial and agricultural applications. It offers an excellent balance of performance, reliability, and ease of integration into machinery. At Dymatec Industries, this reducer is selected and configured to ensure optimal compatibility with modern industrial environments, while providing simplified maintenance and a long service life. Manufactured entirely in Italy, in the Emilia-Romagna region, it benefits from recognized expertise in mechanical power transmission and is particularly suitable for conveyors, mixers, transport systems, agricultural machinery, automated lines, labeling machines, and continuous industrial equipment.

How to select your Varvel F RS28 worm gear reducer?

This reducer is equipped with a G-version motor-reducer coupling, ensuring direct and efficient torque transmission while facilitating assembly and maintenance operations. This design prevents the motor shaft from seizing in the reducer even after long periods of use, thus guaranteeing simple, fast, and economical maintenance.

Available reduction ratios

The reducer is available with a wide range of reduction ratios: 5, 7, 10, 15, 20, 28, 40, 49, 56, 70, 80, 100, allowing precise adaptation of output speed and torque according to the needs of each industrial application. The reduction ratio makes it easy to determine the output speed by dividing the motor speed by the chosen ratio.

Machine mounting systems

The reducer can be installed in several configurations to adapt to all mechanical constraints with direct casing mounting (PC version), flange mounting (FA or FL type with standardized bolt circles), foot mounting, or installation with a torque arm equipped with silent blocks to absorb mechanical forces and vibrations. These solutions ensure flexible, stable, and durable integration on most industrial equipment.

Output shafts and configurations

The reducer is delivered standard with a Ø14 mm hollow shaft for compact and direct mounting but can also be configured with a single solid output shaft (AS) or a double solid output shaft (AD) depending on the application's needs.

Motor input flange configuration and compatibility

The reducer is compatible with various standardized electric motor configurations thanks to its motor input flanges. It can be equipped with IEC 56 B5 Ø120 or IEC 56 B14 Ø80 with coupling for a motor with a Ø9 x 20 mm shaft, or with IEC 63 B5 Ø140 or IEC 63 B14 Ø90 with coupling for a motor with a Ø11 x 23 mm shaft. These configurations ensure a precise mechanical connection between the motor and reducer, guaranteeing optimal torque transfer and simple installation.

The reducer is compatible with IEC 56B5 / IEC 56B14 / IEC 63B5 / IEC 63B14 motors.

Available options for the FRS28

The FRS28 model can be configured with numerous technical options to adapt its performance to the specific requirements of each application:

  • AD: double output shaft
  • AS: single output shaft
  • ASC: protection cover for hollow shaft
  • TLI: internal torque limiter
  • TLE: adjustable external torque limiter
  • GRM: reduced backlash version for increased precision
  • VB: screw extension on the opposite side of the shaft for specific drive
  • VIT: Viton seals for aggressive environments
  • ATEX version: suitable for explosive atmospheres

Replacement and multi-brand compatibility

To ensure a reliable replacement of an existing reducer, it is essential to verify that the output shaft is indeed Ø14 mm, to guarantee perfect mechanical compatibility with the installed equipment.

In case of replacement or modernization of equipment, it is recommended to provide the nameplate of the existing reducer to identify an equivalent solution or optimize application performance.

Worm gear reducers are generally interchangeable between several renowned manufacturers, including:

  • Motovario
  • Bonfiglioli
  • SITI
  • STM
  • SEW-Eurodrive (depending on specific configurations)
  • Rossi

Depending on the needs, it is possible to offer either a replacement with identical characteristics or an improved solution in terms of efficiency, torque, or service life.

Our technical and sales team remains available to assist in choosing the reducer best suited to industrial constraints and to ensure integration without major modifications to the installation.

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