Custom Feedscrews
Solutions for a Wide Range of Industry Applications
We design and fabricate auger-type conveyor screws up to 120 in OD and 65 ft long.
We form sectional, helicoid, ribbon, and dual-start flights from heavy plate or strip, and hold ± 1/16 in pitch tolerance. Our products deliver smooth, reliable bulk-handling performance for abrasive, food-grade, and high-speed applications.
Screw Conveyors & Custom Feedscrew Highlights
- Ø 1/2″–60″ screws built in one-piece or precision-coupled sections
- Sectional, helicoid, tapered, cut, folded & double-start flights formed in-house
- AWS D1.1/ASME IX certified welding with submerged-arc and pulse-MIG or TRIG processes
- ±0.0625″ pitch accuracy via CNC-plasma cut blanks and hydraulic flight press
- Dynamic balancing available for quiet operation
| Criteria | Spec | Notes |
|---|---|---|
| Outside Diameter Range | Min: 1/2 in, Max: 150 in | Forming dies and weld fixtures accommodate very small test flights through large screw conveyor sections. |
| Plate Thickness Range | Min: 0.06 in, Max: 2 in | 16 gauge minimum; thicker sections reviewed case-by-case. |
| Pitch Tolerance After Forming | +/- 1/8 in | Measured chord-wise over full 360°; tighter tolerances possible with post-machining. |
| Concentricity (Run-Out) After Welding | 0.01 in TIR | Measured as total indicator runout (TIR) on a rotating fixture; straightening performed if out of spec. |
| Surface Finish After Forming | Mill finish | Others upon request. |
| Common Materials | Carbon & alloy steels (A36, 1045), Stainless steels (304L, 316L), Abrasion-resistant steels (AR400/Hardox), & Nickel alloys (Inconel 600/625) | Other alloys such as A514 or duplex stainless available on request. |
| Typical Lead Time | 1-3 weeks | Based on job size, alloy, and press availability. |
| Production Scale | No minimum or maximum | Order quantities from one-off replacements to long-run OEM programs. |
OD-OUTSIDE DIAMETER
When a helicoid flight is formed, the bar stock crushes; that is, it decreases in width, expands at the section next to the axle, and decreases at the outside. The amount of this crush varies with the size of the flight. A sectional flight has a uniform cross section.
P-PITCH
Pitch is the distance between flights measured center to center. Pitch can be made just about any distance desired. Screws may have more than one pitch.
RH OR LH
Right Hand or Left Hand. Flights and feedscrew may be made either hand.
ID – INSIDE DIAMETER
Inside diameter or axle size is usually made so flights will fit on standard round stock or standard pipe; however, intermediate sizes may be obtained.
GRADE OF MATERIAL
Flights can be produced in carbon steel; however, in order to achieve certain desired characteristics, ant ductile material can be used – stainless steel, manganese steel, alloy steel, abrasion resistant steel, platinum, nickel alloys, and others.
DRIVE FITTINGS
Screw can be fitted with drive connections, sockets, bushings, axle extensions, or collars as required.
Flights and feedscrews may be made either Right Hand or Left Hand.
Flights can be produced in carbon steel; however, in order to achieve certain desired characteristics, any ductile material can be used- stainless steel, alloy steel, abrasion resistant steel, platinum, nickel alloys, and others.
Screws can be fitted with drive connections, sockets, bushings, axle extensions, or collars as required.
Our business is making flights and feedscrews to match your specifications. As you can see we have some unusual capabilities. Let us put them to work for you. We would like to be your screw conveyor manufacturer.
Phone, fax, email, or mail us your inquiry today and we will promptly work up a quotation for you.
Engineering Information
These are just a small cross sample of available screw conveyor sizes. OD, pitch and ID can be increased in 1/16″ increments. Send us your specifications and we will promptly work up a quotation for you.
