Shaftless Screw Conveyors
Engineered for the materials a typical screw conveyor can’t handle — sticky, stringy, sludgy, and hard-to-move bulk products.
Built for the materials a typical screw conveyor can’t handle
Orthman Shaftless Screw Conveyors are built for products that defeat a conventional shafted screw. The continuous-helix screw rides directly on a replaceable trough liner, which eliminates hanger bearing supports entirely — a common wear point and failure risk in standard conveyors.
Because the design removes the center pipe, there’s no place for wet, sticky material to build up or for stringy product to wrap and bind. The result is a fully enclosed, self-clearing conveyor with full product clean-out, built for continuous duty in demanding sludge, bio-solid, and bulk-handling applications.
Strong, efficient, and built to run
Heavy-Duty Construction
Built to handle continuous duty with abrasive, high-load bulk materials without excess wear.
No Hanger Bearings
The continuous helix rides on the trough liner, removing a common wear and failure point found in shafted designs.
No Center Pipe
An open-core design prevents the product buildup that clogs and binds conventional shafted screws.
Full Product Clean-Out
The fully enclosed housing empties completely between runs, with no dead zones for material to collect.
Replaceable Trough Liner
Engineered to meet the demands of virtually any bulk material handling application, replaceable trough liners are available in a variety of premium wear materials, allowing each conveyor to be customized for maximum performance, durability, and operating life.
Custom Engineered
Every Orthman shaftless screw conveyor is engineered to meet the specific demands of the application, with customizable spirals, troughs, liners, drives, and discharge arrangements for optimum performance and reliability.
Configured to your application
Standard Trough
Fully enclosed carbon steel trough for general dry-to-damp bulk material handling.
Replaceable Trough Liners
Multiple liner materials available, including UHMW, AR steel, ceramic, and specialty wear materials.
Stainless Steel Construction
304 or 316 stainless for corrosive or washdown environments.
Extended-Length / Multi-Incline
Horizontal, inclined, or multi-section runs engineered to fit your facility’s layout.
Where shaftless conveyors go to work
Representative specifications
| Trough Diameter | 9″ – 24″ |
|---|---|
| Trough Length | Up to 80 ft per section |
| Incline | 0° – 30° |
| Trough Construction | Carbon steel or stainless steel |
| Liner Options | UHMW, AR steel, ceramic, or specialty wear materials |
| Drive | Shaft-mounted or direct-coupled gear reducer |
Representative ranges for layout and reference only — every unit is engineered to the specific application.
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