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Extruder

Twin Shaft Feeders

Controlled Feeding for Extrusion or Other Process Equipment

Bonnot Twin Shaft Feeders use twin counter-rotating shafts to positively feed large batch volumes into downstream extrusion or process equipment, reducing bridging and manual feeding intervention.

Variable pitch knives and an adjustable gate allow residence time and output rate to be tuned to the application, while a direct-connect gear motor and sealed gear case keep the design low-maintenance. Custom bases and orientation options let the feeder be fitted to your existing plant layout with a minimized footprint.

Technical line drawing of a Twin Shaft Extruder featuring an industrial mixer with a motor, gearbox, and internal paddles. The unit is rectangular, with support legs and mounting flanges visible at both ends.

Extruder Design Features

1Twin Shafts for large batch handling

2Variable pitch knives and gate to change residence time and output rate

3Direct Connect Gear Motor

4Custom bases and orientation available to minimize the footprint

5Sealed Gear Case for durability

Specifications

Extruder Standard Specifications

8 Series TF

Industrial auger mixer with dual rotating shafts and helical blades, electric motor, and gear mechanisms. This Twin Shaft Extruder is constructed from metal and designed for blending or processing bulk materials. Viewed from an overhead angle.
Layout
55" x 21" x 19"
Hopper Opening
42" x 16"
Hopper Motor
5 HP
Close-up of a stainless steel industrial machine part resembling a Twin Shaft Extruder, with multiple angled metal blades attached to horizontal rods, secured by bolts and nuts, designed for mixing or processing materials.

Twin Shafts with Variable Pitch Knives

Bolt through variable pitch knives allow for varying the residence time, shear and mix. Also, easy to replace when worn.

Twin Shaft Feeder Mounted

In typical production environments, our Twin Shaft Feeders are mounted directly above in order to direct feed our extruders.

A large industrial machine, resembling a Twin Shaft Extruder with its robust motor, gears, and handwheel, stands on a factory floor. A red safety barrier is in the background, and trays with parts rest on the machine’s base.

FREE FEASIBILITY TESTING

WANT TO PROVE IT OUT?

The Bonnot test facility offers free feasibility trials for the TF series — different knife configurations, gate settings, and full material testing.

  • EARLY RESEARCH

    EXPLORE THE TF SERIES

    Not sure which size fits your batch volume? We'll help you match your material to the right configuration.

    VIEW TF SERIES SPECS

  • TECHNICAL EVALUATION

    BOOK A TECHNICAL CONSULTATION

    Discuss knife pitch, residence time, and downstream integration directly with a Bonnot process engineer.

    SCHEDULE A CONSULTATION

  • READY TO INTEGRATE

    DISCUSS YOUR INTEGRATION

    Tell us about your material and downstream extruder. We'll recommend the right feeder.

Trusted by the Best

  • The Honeywell UOP logo with “Honeywell” in red bold letters above and “uop” in blue lowercase letters below on a light background, representing advanced technologies such as the Twin Packer Extruder.
  • Arkema logo in blue capital letters with the words “Innovative Chemistry” in smaller red font underneath. The background is light gray, evoking the advanced technology behind solutions like the Twin Packer Extruder.
  • SC Johnson logo with the text, “A family company at work for a better world,“ in black and red on a light background, subtly incorporating a laboratory extruder image to highlight the company’s commitment to innovation and quality.

Relevant Ancillary Equipment

A metal industrial Terrier Extruder machine labeled “Bonnot,” featuring an electric motor, rectangular hopper, and cylindrical extrusion section on a sturdy base.

Terrier Extruders

A gray industrial Twin Packer Extruder machine with a yellow vertical feed chute, a cylindrical motor on the left, and a “Bonnot” label on the front. The machine features a rectangular base and metallic components.

Twin Packer Extruders

A white rectangular industrial device with a display screen, red button, side nozzle, and a blue “B BONNOT” logo on the front panel. The unit features advanced extruder controls, connection ports, and a gray handle on the bottom.

Extruder Controls