Varvel F RD32 Coaxial Gear Reducer – Output Shaft Ø35 x 70 mm

Ref: F RD32 Ø35

The Varvel FRD32 coaxial gearboxis part of the RD series, a range developed by Varvel, an Italianmanufacturer whose expertise in power transmissionis recognized in industrial markets worldwide. Designed to transform the high speed of an electric motor into a slow and powerful rotation, it meets the demands of modern production lines where mechanical reliability is non-negotiable.

Its solid keyed output shaft of Ø35x70mmhas a generous diameter that gives it excellent resistance to radial forces and high transmission capacity. It can easily accommodate pulleys, sprockets, friction wheels, or rigid couplings. The shaft height of 115mm, compliant with standardized industrial dimensions, facilitates its installation both in new constructions and when replacing existing equipment.

The maximum output torque of 420 Nmand the availability of 23 reduction ratios, covering a range from 2.25 to 63, make the FRD32a gearbox capable of meeting very different needs within the same installation: low-speed conveyors, continuous cycle production machines, automated equipment with variable speed, or drive systems subjected to cyclic loads. For each configuration, a ratio exists to optimize both the output speed and the level of transmitted torque.

Connection to the motor is made via a standardized IEC input flange, available in B5or B14configuration for IEC 71, 80, 90, 100, and 112sizes. No adapter parts are needed: the motor attaches directly to the flange, which reduces assembly time and ensures perfect alignment upon installation. The integrated elastic couplingplays an essential protective role by absorbing torque peaks at start-up and dampening unforeseen overloads, thus limiting premature wear of gears and bearings.

Depending on the specific constraints of each installation, the Varvel FRD32 gearboxcan be mounted by feet B3on a chassis or machine frame, or by output flangein Ø160mm, Ø200mm, or Ø250mmfor direct and rigid assembly on the driven machine.

Are you currently using a gearbox from another brand? Send us a photo of your equipmentand its nameplate, and our team will provide a precise technical equivalentwith the Varvel model best suited to your installation.

  • Power

    420 Nm

Documentation technique :

Why choose the Varvel F RD32 reducer — Output shaft Ø35mm?

When it comes to industrial power transmission, the name Varvel consistently comes up. This Italian manufacturer has over 60 years of experience in designing and producing reducers, gearmotors, and transmission components, with an established presence in major global industrial markets. Behind every Varvel product lies a demanding development process, rigorous material selection, and strict quality controls at every stage of manufacturing. For a design office or a maintenance manager, choosing Varvel means relying on a brand whose field reliability is well-proven.

Among its most accomplished ranges, the RD series includes helical gear coaxial reducers whose in-line architecture offers high mechanical efficiency and great flexibility of use. The F RD32 model is a particularly versatile variant: its compact square housing allows it to be installed in reduced spaces without sacrificing performance, while its modular design facilitates adaptation to different installation configurations.

Technical specifications of the FRD32 Ø35mm reducer

At the heart of the Varvel F RD32 reducer is a train of high-precision helical gears that ensures smooth and quiet mechanical transmission, with limited heat generation and perfectly controlled progressive wear. Here are its detailed technical characteristics:

  • Type: In-line helical gear coaxial reducer
  • Brand / Series: Varvel — RD Series, size 32
  • Output shaft: solid, keyed, Ø35x70mm
  • Shaft height: 115mm
  • Maximum output torque: 420 Nm
  • Number of available reduction ratios: 23 ratios (from 2.25 to 63)
  • Housing: square shape, compact construction
  • Lubrication: oil bath, reduced maintenance
  • ATEX version: available on request for explosive environments

Motor compatibility and IEC input flanges

The prefix F in the designation F RD32 indicates the presence of an integrated IEC input flange, designed to directly accommodate a standardized electric motor without an intermediate part. The reducer covers motor sizes IEC 71, 80, 90, 100 and 112, in both B5 round flange and B14 square flange versions.

IEC size 71 connects to B5 Ø160mm or B14 Ø120mm. IEC size 80 accepts a B5 Ø200mm or B14 Ø120mm flange. For IEC 90, the dimensions increase to B5 Ø200mm and B14 Ø140mm. IEC sizes 100 and IEC 112 share the same interface dimensions: B5 Ø250mm and B14 Ø160mm. This compatibility spectrum covers most industrial motorizations.

Mounting and installation

The Varvel F RD32 reducer offers two distinct mounting solutions to adapt to the constraints of each installation. Foot mounting meets the needs of classic installations on a frame or welded chassis. Output flange mounting is for configurations requiring direct and rigid assembly on the receiving machine, with the choice of three flange diameters: Ø160mm, Ø200mm or Ø250mm. The shaft height of 115mm, compliant with common industrial standards, facilitates the replacement of an existing reducer without modifying the installation.

23 available reduction ratios

Few reducers of this size offer such a wide range of choices. With 23 reduction ratios distributed between 2.25 and 63, the F RD32 can meet very different needs within the same range: 2.25 — 2.82 — 3.55 — 4.46 — 5.18 — 5.61 — 7.09 — 7.72 — 8.92 — 10.06 — 11.22 — 12.37 — 14.17 — 15.44 — 17.84 — 20.12 — 22.44 — 25.26 — 28.34 — 31.76 — 35.68 — 44.68 — 63.00. This wealth of choice allows selecting the most suitable ratio for each application, whether it's a slow, high-torque drive or an intermediate speed transmission.

What applications use the F RD32 coaxial reducer?

The Varvel F RD32 is a reducer found in a wide variety of industrial environments. The food industry uses it on its conveyor lines, mixers, and packaging equipment, where production continuity and ease of cleaning are imperatives. The machine tool and agriculture sectors use it for robust transmissions subjected to sustained work cycles. In the field of energy — photovoltaic trackers, wind systems — its long-term reliability is particularly appreciated. It also equips automation installations, robotics cells, and handling systems where precision and regularity of transmission are non-negotiable.

Key takeaways about the Varvel F RD32 reducer

The F RD32 is a complete industrial reducer, combining in a compact format a maximum output torque of 420 Nm, a range of 23 ratios between 2.25 and 63, extended IEC compatibility from size 71 to 112 in B5 and B14, mounting flexibility by feet or by flange in Ø160, Ø200 or Ø250mm, and a shaft height of 115mm facilitating integration. The modularity of its design limits stock references and reduces intervention times, while Varvel manufacturing quality guarantees reliable and quiet operation throughout the equipment's lifespan. An ATEX version is available for classified areas.

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