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Screw Feeders

With a huge range of models and configurations, and over 50,000 units in the field, Schenck’s line of screw feeders can meter nearly any product in any environment. And with their high degree of reliability, precision, and customizability, they often provide the best performance for these applications on the market. The characteristics shared by all feeders are listed in the table, and options for each model class are detailed below.
Throughputs 0.007–1,137 ft³/h
Perfect for Powders, granules, chips, flakes & fibers, organics and inorganics, other virgin & recycled materials
Made In USA
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Screw Feeder

Models

High Precision Feeders – 1.1 to 330 lbs./hr. (0.007–0.56ft³/hr, application-dependent)

Ideal for volumetric or gravimetric low feed rate applications. This unit features a quick and easy disassembly dual arm external hopper agitation system for maximizing material handling versatility and simplified maintenance. Disposable or recyclable EPDM feed hoppers are also available.

Specs

  • Accuracy:
    – Gravimetric: ±0.25–1%
    – Volumetric:  ±1.5–2.5%
  • Materials
    – Contact: 304 SS (screws), EDPM, PTFE (Rulon 641)
    – Non-contact: 316 SS, EDPM, PTFE, PET-P
  • IP65 washdown
  • Dust-proof, quick-release clamps on all product-contact parts

Options

  • 3-A Sanitary or Standard Configurations
  • Electrical: 240V, 1-phase, 4A /or/ 120v, 1-phase, 8A
  • Hopper:
    – Sizes: 0 (no hopper for continuous operation), 4, 12, or 36 L
    – Cover: manual or auto
  • Screw Diameters: 0.27, 0.5, 0.75, 1.25”

Universal Feeders – 3.4 to 1,137 ft³/hr

Accommodating the widest range of sizes and configurations, the Universal model (Mechatron) can operate Typical applications are found in the plastics, chemical, food, detergent pharmaceutical, building materials, and cement industries. And with components easily-accessed from the non-process side, it significantly reduces time needed for maintenance and cleaning.

Specs

  • Accuracy:
    – Volumetric: ±2 – 5%
    – Gravimetric: to spec.

Options

  • Controls: Local or remote
  • Materials:
    – Toner-resistant or static dissipative coating
    – 304/316 SS & HDPE contact surfaces
    – Standard or 3-A Sanitary configuration
  • Hopper
    – Rigid or flexible interiors (for flow assist)
    – Sizes: 0 (no hopper for continuous operation), numerous sizes from 2.9–100ft³
    – Open, manual, or auto-covers
  • Screws
    – 304 or 316 SS
    – Single or dual feed
  • Motor
    – 460 VAC, 3 PH, 50 or 60Hz
    – Gear ratios: 14:45, 18:40, 24:36, or 26:32
    – Explosion proof or wash down

Whereas vibratory feeders are better for irregular product and those that would damage or be damaged by feed screws, screw feeders can handle certain products better, such as liquids and viscous or sticky slurries. If your product fits in neither or both categories, reach out and we’ll identify the best solution.

High precision (hygienic design)
High precision (hygienic design, exploded view showing components)
High-precision feeder shown with stainless
Benefits of high precision feeder are many
High Precision Feeder cleaning procedure
Bulk flow screw feeder
Universal Feeder cleaning and dismantling procedure
Screw Feeders

Bulk Feeders – 282 to 1,112 ft³/hr

The bulk feeder is ideal for lighter, more fluffy powdered products. Most popular for plastic film extrusion and compounding, it can directly fill large vessels or maintain load for smaller, downstream feeders. The system is designed to allow easy dismantling for cleaning and is available in steel for more abrasive applications.
Accuracy to spec.

Features:

  • Internal Agitator (bottom-driven for balance)
  • Double-wound helix feeder (maintains smooth feed at low speeds)
  • Modular components (easily adaptable for different speeds and products)
  • Tube-in-tube discharge minimizes wear

Options:

  • Hoppers: 35, 53, 71, or 88ft³
  • Screw Diameters; Feed Rates:
    – 5.9”; 176–282ft³/hr
    – 7.9”; 353–565ft³/hr
    – 9.8”; 706–1,112ft³/hr
    High precision (hygienic design)
    High precision (hygienic design, exploded view showing components)
    High-precision feeder shown with stainless
    Benefits of high precision feeder are many
    High Precision Feeder cleaning procedure
    Bulk flow screw feeder
    Universal Feeder cleaning and dismantling procedure
    Screw Feeders

    Whereas vibratory feeders are better for irregular product and those that would damage or be damaged by feed screws, screw feeders can handle certain products better, such as liquids and viscous or sticky slurries. If your product fits in neither or both categories, reach out and we’ll identify the best solution.

    >40 Years’ Experience

    From equipment sales to integration and service, ABM Equipment has scaled and optimized systems just like yours. Give us a call or fill out the form below to find out how we can scale your processes and reduce your operating costs.

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