Varvel Worm Gearbox - F RT 40 - Output Shaft Ø18mm

Ref: F RT 40 Ø18

The Varvel FRT40 worm gearbox stands out for its square aluminum housingand compact design, ideal for integration into confined spaces. Designed to reduce speed while maximizing output torque, it perfectly meets the needs of conveying, automation, and industrial machinery. Its Ø18 mm hollow output shaftensures direct and reliable transmission, without requiring additional coupling.

For mounting, several options are available: on the housing (PC), by feet (B3), by output flange (F or FL), or via a torque arm with silent blocksfor environments subject to vibrations. The gearbox is compatible with standard IEC 56, IEC 63, and IEC 71 three-phase asynchronous motors, chosen according to the required power and torque.

In case of replacement, provide us with the nameplateof your old gearbox: we will offer you the exact equivalent or a more efficient solutionadapted to your installation.

  • Power

    60 Nm

Documentation technique :

Discover the Varvel F RT40 worm gearbox

The Varvel F RT40 worm gearbox with a square casing is a compact, robust, and high-performance mechanical transmission solution, designed for the most demanding industrial and agricultural environments. Combining reliability, efficiency, and ease of integration, it adapts to a wide variety of machines and installations.

At Dymatec Industries, each gearbox is carefully selected and configured to ensure total compatibility with modern equipment, while simplifying maintenance and maximizing service life. Entirely made in Italy, in theEmilia-Romagna region, it benefits from recognized expertise in mechanical transmission. It is perfectly suited for:

  • Conveyors and transport systems
  • Mixers and continuous operation equipment
  • Agricultural machinery
  • Automated lines and labeling machines

How to choose your Varvel F RT40 worm gearbox?

The F RT40 integrates a motor-gearbox coupling in G version, ensuring direct and efficient torque transmission while facilitating assembly. This design prevents the motor shaft from seizing in the gearbox, even after prolonged use, for quick, simple, and economical maintenance.

Available reduction ratios

A wide range of ratios is available to precisely adapt the output speed and torque to each application:

  • 5, 7, 10, 15, 20, 28, 40, 49, 56, 70, 80, 100

The output speed is obtained by dividing the motor speed by the selected ratio.

Machine mounting systems

The F RT40 can be installed in several configurations to meet all mechanical constraints:

  • PC — Direct mounting on casing
  • F or FL — Output flange mounting with standardized center distances
  • B3 — Foot mounting
  • BRV — Torque arm equipped with silent blocks to absorb forces and vibrations

These solutions ensure flexible, stable, and durable integration on the vast majority of industrial equipment.

Output shafts and configurations

In standard configuration, the gearbox is supplied with a Ø18 mm hollow shaft for compact and direct mounting. It can also be configured with:

  • AS — Single solid output shaft
  • AD — Double solid output shaft

Motor input flange configuration and compatibility

The F RT40 is compatible with the most common standardized electric motors:

  • IEC 56 B5 Ø120 or IEC 56 B14 Ø80 — for motors with Ø9 × 20 mm shaft
  • IEC 63 B5 Ø140 or IEC 63 B14 Ø90 — for motors with Ø11 × 23 mm shaft
  • IEC 71 B5 Ø160 or IEC 71 B14 Ø105 — for motors with Ø14 × 30 mm shaft

These configurations ensure a precise mechanical connection and optimal torque transfer. The gearbox is compatible with IEC 56B5, IEC 56B14, IEC 63B5, IEC 63B14, IEC 71B5 and IEC 71B14 standards.

Available options for the Varvel F RT40 gearbox

The F RT40 model can be customized with numerous technical options:

  • AD — Double output shaft
  • AS — Single output shaft
  • ASC — Protective cover for hollow shaft
  • TLI — Internal torque limiter
  • TLE — Adjustable external torque limiter
  • CS — Tapered roller bearing at output
  • GRM — Low backlash version for increased precision
  • VB — Worm extension on the opposite side of the shaft
  • VIT — Viton seals for aggressive environments
  • ATEX — Version for explosive atmospheres
  • TS — Vent hole
  • SLP — Tachometer version PC/FL
  • SLS — Tachometer version S

Which brands is the Varvel F RT40 Ø18mm gearbox compatible with?

For a reliable replacement, ensure that the existing output shaft is Ø18 mm to guarantee perfect mechanical compatibility with the existing installation. In case of replacement or upgrade, send us the nameplate of the existing gearbox to quickly identify an equivalent or optimized solution.

Worm gearboxes are generally interchangeable with those from the following manufacturers:

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

Depending on your needs, we can offer 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 you in choosing the most suitable gearbox and ensure integration without major modification to your installation.

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