| Thayer Product Family |
| Platform Scale Screw LIW Feeders |
| Approximate Feed Rate Range lbs/hr (@ 50 lb/ft³) |
| 0.005 – 200 |
| Scale Capacity (pounds) |
| 3.0 – 500 |
| Scale Type |
| Flexure Suspension (Platform Scale) |
| Weigh Hopper Liquid Capacity (ft³) |
| 0.1 – 9.75 |
| Available Screws Diameter (in) |
| 0.2 – 4.0 |
| Load Cell Type |
| Strain Gauge |
| Examples of Materials Handled |
| COCOA POWDER, RICE, ALMONDS, PP PELLETS, CALCIUM STEARATE, PIGMENT, CRUMB RUBBER, TRONA ORE, CALCIUM CARBONATE, TIO2, GRAPHITE POWDER, QUICK LIME, CANDLE WAX, GROUND BIOMASS. |
Compact Screw Feeders
Precision dosing performance, designed to fit where others can’t.
Thayer Scale’s family of compact loss-in-weight screw feeders deliver precision class accuracy and repeatability in a small footprint feeder. Our family of feeders offers a range of feed rates and scale capacities for every powder or granule feeding need.
Thayer Scale’s loss-in-weight screw feeders feature a patented system for reliable metering, virtually eliminating common problems associated with feeding powders.
The optional (patented) “compound flight” feed screw can be used with most materials to downwardly extend the operating range of the feeder by a factor of 10 (typically).The patented “U-trough” feed chamber with independently driven agitator assures precise, reliable material delivery to the feed screw. It eliminates material build-up, controls material aeration and delivers a steady constant flow of material.
Industry Applications
Suitable for cohesive powders and granules.
- Food Ingredients: Cocoa Powder, Flour, Rice, Sugar, Almonds, Toffee Chips, Powdered Milk Additive, Salt, Spice, Rice Powder, Flour, Whey Powder, Seasoning
- Plastics & Polymers: Impact Modifier, PP Pellets, Advawax, Calcium Stearate, Additive Powders, Stearate, Plastic Additive, Pigment
- Rubber Materials: Crumb Rubber, Rubber Granules
- Minerals / Chemicals: Trona Ore, Micro-Cel E, Calcium Carbonate, TIO2, Borax, Graphite Powder, Zinc Oxide, Kaolin Clay, Guar Gum, Quick Lime, Copper Powder, Talc, Pharmaceutical Powder, Carbon Black, Sodium Borate, Coal Fines, Ferrous Sulfate, Lead Oxide, TSP, Lithium Ion Powder
- Other Industrial Materials: Candle Wax, Ground Biomass, Vitamin Additive
Get a Quote for a Compact Screw Loss-In-Weight Feeder
Core Technologies
🌀 “U-Trough” Hopper & Agitator
The first practical AND economical means for metering difficult powders. An independently driven agitator maintains optimum material conditioning while screw speed can vary to control flow rate. The U-shaped trough and agitator combination effectively de-aerates and contain powders.
🔩 Compound Flight Feed Screw
Optional patented “compound flight” feed screw can be used with most materials to downwardly extend the operating range of the feeder by a factor of 10 (typically).
⚖️ Fully Mass-Counterbalanced Platform Scale
Maximizes load cell utilization by measuring only the live load and isolating the material weight signal from vibration, shock, and external forces.
🧩 Strain Gauge Load Cell:
Rugged and accurate, rated 25–500 lbs. with 300% overload protection.
🧰 Built-In Automatic Test Weight Lifter (ATWL)
Built-in calibration system applies a known test load at the press of a button. Enables quick, verifiable calibration checks without halting production or manual intervention.
Key Benefits
of Thayer Scale’s Compact Screw Feeders
🌀 Precise, Reliable Feeding
Screw feeders enable precise and reliable feeding of cohesive, easily aerated and difficult to control powders.
🎯 Extended Operating Range
Feeds from a few grams per minutes up to 10s of 1000s of pounds/hour.
🧼 Easy To Clean
Breaks down completely in under one minute for quick, thorough sanitation. Built from durable stainless steel for long-term, trouble-free performance.
🧱 Built to Survive
Unlike lightweight designs made for short-term convenience or scale sensitivity, our feeders are engineered for long-term durability, without compromising accuracy.
🔄 Integrated Material Agitation Options
Prevents flow issues like bridging, funnel flow, adhesion, and cohesion for consistent material feeding.
📐 Flexible Mounting Options
Supports floor-mounted, rotating, stationary, wheeled, forklift-based, or suspended installations.
