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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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.

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

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.