| Thayer Product Family |
| Cable Suspension Scale Screw LIW Feeders |
| Approximate Feed Rate Range lbs/hr (@ 50 lb/ft³) |
| 0.005 – 600 (Consult Factory for Custom) |
| Scale Capacity (pounds) |
| 5.0 – 4,000 |
| Scale Suspension Type |
| Cable |
| Weigh Hopper Liquid Capacity (ft³) |
| 0.1 – 60 (Consult Factory for Custom) |
| Available Screws Diameter (in) |
| 0.25 – 6.0 (Consult Factory for Custom) |
| Load Cell Type |
| Strain Gauge / LVDT |
| Examples of Materials Handled |
| STARCH, TITANIUM DIOXIDE, SODA ASH, TALC, IRON OXIDE, CALCIUM CARBONATE, PP PELLETS, POLYETHYLENE PELLETS, CLAY, LIMESTONE, FOUNDRY MIX, FILTER AID, SODIUM BICARBONATE, SPICES, SNACK FOOD MIX. |
Screw Feeders
The broadest material volume range—enabled by Thayer Scale’s proven cable suspension architecture.
Thayer Scale’s family of general purpose loss-in-weight screw feeders deliver precision class accuracy and repeatability across 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.
- Powders & Fines: Starch, Titanium Dioxide (Tio₂), Cocoa Powder Tio₂, Soda Ash, Calcium Oxide, Talc, Pigments, Iron Oxide, Zinc Borate, Zinc Oxide, Quick Lime, Fluorspar, Zeolite, Calcium Carbonate, Vitamin Powder, Graphite Powder
- Pellets / Beads: PP Pellets, Plastic Pellets, Polyethylene Pellets, Candle Wax Beads
- Minerals & Ores: Stucco, Clay, Chromate Ore, Limestone, Foundry Mix, EAF Dust, Gypsum
- Chemicals / Industrial Additives: Filter Aid, Sodium Bicarbonate, Agricultural Chemicals, OSB Resin
- Food & Ingredient Mixes: Snack Food Mix, Dog Food Premix, Spices, Seasoning Additive
Get a Quote for a 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.
🧩 Load Cell Options for Any Application
Strain Gauge Load Cell: Rugged and accurate, rated 25–500 lbs. with 300% overload protection. LVDT Load Cell: High-resolution, tension-style design ideal for light loading and fine-feed applications and offering unparalleled overload protection at 1000% of rated output.
🧰 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 Screw Feeders
🌀 Precise, Reliable Feeding
Screw feeders enable precise and reliable feeding of cohesive, easily aerated and difficult to control powders.
🎯 Extended Operating Rang
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.
