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Custom 6.4-inch Bonnot single-screw extruder rendering

Custom Extruders

Custom single-screw extruder design and manufacturing, since 1891

THE BONNOT COMPANY DESIGNS AND BUILDS CUSTOM SINGLE-SCREW EXTRUDERS FOR APPLICATIONS WHERE STANDARD COMMERCIAL EQUIPMENT FALLS SHORT.

Since 1891, we’ve engineered specialty extrusion equipment across food, chemical, catalyst, carbon, and industrial materials. We start from a proven base design, then run trials in our test facility to refine and optimize the configuration for your material and throughput. Custom Bonnot extruders can be specified across a range of sizes, screw geometries, length-to-diameter (L/D) ratios, horsepower, and RPM ranges, with controls matched to your process.

  • WHAT IS A CUSTOM EXTRUDER?

    A custom extruder is an extrusion machine engineered for a specific material, throughput, and process rather than sold as a fixed standard model. Bonnot builds custom single-screw extruders by adapting screw geometry, length-to-diameter ratio, feed section, drive, and die to the exact requirements of your application. This lets processors run materials or output rates that off-the-shelf extruders cannot handle reliably.

  • MATERIALS & INDUSTRIES WE SERVE

    Bonnot custom single-screw extruders process a wide range of materials, including food and pet food, chemicals, catalysts, activated carbon, rubber, clay and ceramics, bulk molding compound, hydrocolloids, sealants, and rodenticides. We serve food processing, specialty chemical, catalyst and carbon production, rubber, and industrial manufacturing. Because each machine is engineered to the material, Bonnot routinely handles abrasive, high-viscosity, and heat-sensitive formulations that standard extruders cannot run reliably.

  • THE BONNOT TEST FACILITY: PROVE IT BEFORE YOU BUY

    Every Bonnot custom extruder starts in our test facility. We run your actual material on Bonnot equipment to validate screw design, throughput, and product quality before your machine is built — so the final specification comes from measured results, not assumptions. Because throughput depends on material, die, and configuration, empirical testing is how we confirm your machine will hit its target output.

  • CUSTOM EXTRUDER SPECIFICATIONS
    • Screw diameter 1″ (25 mm) lab → 24″ (610 mm) large-scale production
    • L/D ratio ≈2:1 (short, high-pressure packer builds) → 20:1 (long cold-forming / cooking barrels)
    • Horsepower 0.5 HP (1 Series lab) → 125 HP (10 Series); most production units 10–75 HP
    • Motor / RPM Motors ~1,780 rpm (or 2-speed 3000/600) through ~37:1–47:1 reducers; auger runs in the low tens of rpm, from ~5 rpm at the low setting
    • Throughput Not fixed — determined by material, die, and configuration; established empirically at startup

EXTRUDER DESIGN FEATURES

custom extruder

  1. Custom feed sections to accommodate your batch size

  2. Packer, Screw Geometry & Die Shape

  3. Custom contact component material selection to resist wear and corrosion

  4. Temperature Control Manifold

  5. Designs suitable for higher torque loads and to match the exact throughput you need

  6. Custom bases to match centerline height with takeoff equipment or to add casters for mobility to fit your plant layout

  7. Custom designs for cleanability to aid with faster material changeovers

  8. Custom dies to match the desired shape and size of your extrudate

A turnkey custom extrusion system for a medical application, integrating commercial components into a single validated line — an example of Bonnot's customization and systems-integration capability.

This system demonstrates the level of customization and integration of commercial components for a medical application.

Cooking Extruder

A cooking extruder system using both steam and water for precise process temperature control across five separate zones.

Bonnot cooking extruder with steam and water injection ports for multi-zone temperature control
Rubber extruder integrated with a gear pump for metered, low-output delivery

Gear Pump Integration

A gear pump integrated into a full bale feeder for highly metered, low-output delivery — one example of how Bonnot integrates commercial components to enhance a base design.

Trusted by the Best

  • The J.M. Smucker Co. logo features abstract fruit shapes in red, green, yellow, and teal above the company name in black text on a white background, reflecting the creativity and innovation found in their custom extruder processes.
  • The image shows the Dow logo, featuring the word “Dow” in white capital letters inside a red diamond shape on a light gray background, often recognized in industries utilizing advanced technologies such as Live Bottom Extruder systems.
  • The image shows the blue P&G logo, with the letters “P” and “G” connected by an ampersand, on a light gray background. This sleek design could easily represent innovation in industries like Custom Extruder manufacturing.
  • The image shows the ExxonMobil logo in red text on a light gray background. The capitalized “Exxon” features overlapping Xs, reflecting the precision and innovation found in a Custom Extruder. “Mobil” is written in the same font, with no space between the words.
  • Red Avery Dennison logo featuring a triangular geometric symbol on the left and the company name “Avery Dennison” in bold, uppercase red letters on the right, all on a light gray background—a design that reflects the innovative spirit of a custom extruder within the industry.

FREE FEASIBILITY TESTING

WANT TO PROVE IT OUT?

The Bonnot test facility offers free feasibility trials for custom builds — different screw geometries, feed sections, contact materials, and full material testing.

  • EARLY RESEARCH

    EXPLORE CONFIGURATION RANGES

    Not sure what's achievable for your material? Review our screw diameter, L/D ratio, and horsepower ranges to see what's possible.

    VIEW SPECIFICATION RANGES

  • TECHNICAL EVALUATION

    BOOK A TECHNICAL CONSULTATION

    Discuss feed geometry, drive configuration, and die-face requirements directly with a Bonnot process engineer.

    SCHEDULE A CONSULTATION

  • READY TO TRIAL

    BOOK A FREE TRIAL RUN

    Bring your material to our facility. We'll run a trial, measure key parameters, and send you samples.

Relevant Ancillary Equipment

A metal mechanical assembly with an open rectangular housing, an attached motor, precision screws, and a circular plate featuring multiple holes—resembling the core of an advanced extruder cutter. The internal components and mounting brackets are visible, highlighting its robust design for precise material handling.

Extruder Cutter

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

Frequently Asked Questions

  • WHAT IS A CUSTOM EXTRUDER?

    A custom extruder is a single-screw extrusion machine engineered for a specific material, throughput, and process rather than sold as a fixed standard model. Bonnot has built custom extruders since 1891.

  • WHAT SIZE EXTRUDERS DOES BONNOT BUILD?

    Bonnot custom single-screw extruders range from 1-inch (25 mm) laboratory units to 24-inch (610 mm) large-scale production machines.

  • HOW MUCH HORSEPOWER DO BONNOT EXTRUDERS HAVE?

    Bonnot extruders range from 0.5 HP laboratory units to 125 HP production machines, with most production units running between 10 and 75 HP.

  • CAN I TEST MY MATERIAL BEFORE COMMITTING TO A CUSTOM BUILD?

    Yes. Bonnot runs trials in its test facility on your actual material, so the final machine is specified from measured throughput and product-quality results.

  • WHAT MATERIALS CAN BONNOT EXTRUDERS PROCESS?

    Bonnot custom extruders process food, pet food, chemicals, catalysts, carbon, rubber, clay, ceramics, hydrocolloids, sealants, and other specialty materials.

  • HOW LONG HAS BONNOT BEEN BUILDING EXTRUDERS?

    The Bonnot Company has designed and manufactured extruders since 1891.