Terrier Extruders
Robust, Durable, High Volume Processing & Easy to Maintain
The Bonnot Company offers a line of Terrier Extruders to cost effectively meet your most demanding requirements.
Extruder Design Features
1High Torque Drive
2Robust Gear Box
3Jacketed, Grooved Barrel (optional)
4Counter Rotating Packer
5Jacketed Hopper (optional)
Product Information
The Bonnot Terrier is the company's core general-purpose single-screw extruder, available from 1" nominal through 8" and designed for the widest possible range of clay and firelogs. The Terrier's construction centres on a segmented, cast carbon steel screw and hardened barrel, supported by a heavy-duty gearbox and variable-speed drive. Output scales from bench-top laboratory quantities on the 1" unit through to high-volume continuous production on the 8" model, making the Terrier equally suitable for formulation development work and large-scale commercial manufacturing.
Two feed configurations are available across the series: the SP (Single Packer) variant, which adds an integral force-feed hopper for materials that bridge or surge under gravity, and the NP (No Packer) configuration, which serves free-flowing and pre-plasticised feeds without the additional mechanical complexity of an upstream packer. Jacketed barrel sections and rotary union auger conditioning are available throughout the range, and the open-frame construction facilitates cleaning and die changeover - properties that reduce downtime on multi-product lines and accelerate formulation development cycles in pilot environments.
Advantages at a glance
The Terrier covers the widest output range in the Bonnot product line, from laboratory quantities through to high-volume continuous production, across a mechanically consistent series that allows the same process chemistry and screw geometry to scale from research through to commercial manufacturing without re-development. This consistency is the primary commercial argument for the Terrier in pilot-to-production development programmes, where the cost and time associated with re-optimising a process for an architecturally different production machine can exceed the value of the initial development work.
The SP and NP configuration options mean that the feed system is factory-matched to the flow characteristics of the material from the point of specification, rather than being adapted in the field after commissioning. SP machines carry an integral single-packer that handles bridging and surge-prone materials.
The heavy-duty helical or planetary gearbox with variable-speed motor provides smooth torque delivery across the full speed range - a property that reduces screw wear. Jacketed barrel sections and optional rotary union auger conditioning allow independent heating and cooling of the material as it travels through each zone, while standard flange interfaces allow die changeover in minutes rather than hours.
Industries and materials served
Food, Pet Food, and Confectionery
Terrier extruders in food-grade stainless steel process snack doughs, breakfast cereal intermediates, pet food pastes, and confectionery masses. The variable-speed drive provides precise texture control at low shear rates - a requirement for structured food products where over-shearing at the screw causes loss of the particulate texture that differentiates a premium product from a homogenised one.
Firelog, Biomass, and Combustion Products
The Terrier-architecture machine processes wax-impregnated sawdust, compressed biomass, and fire-starter compositions into cylindrical logs and briquettes. The high-pressure barrel capability manages the dense, abrasive feedstocks involved, while the SP feed system handles the inconsistent flow behaviour of sawdust and biomass blends that resist gravity feeding in standard hopper geometries.
available in a range of sizes
1 Series NP
- Output
- 5-15lbs/hour
- Layout
- 21" x 22" x 16"
- Hopper Opening
- 3” x 2.4”
- Power
- 0.5 - 3 HP
8" Terrier with Packer
High volume robust design extruder.
Want to prove it out?
The Bonnot Company is pleased to offer FREE feasibility testing in our test facility. Come and take advantage of our comprehensive catalog of test equipment; different extruder designs, screw geometries, forming dies, temperature control options, mixers and material testing equipment.
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