Few pieces of equipment in bulk material handling are as adaptable or as consistently relied upon as the screw conveyor. Whether you’re distributing grain across a storage facility, cooling a processed food product, or batching chemical compounds on a production line, a properly engineered screw conveyor system does the work quietly and efficiently with minimal footprint and straightforward maintenance. The challenge isn’t finding a screw conveyor; it’s finding one built to the right specifications for your material and your process. Here’s what you need to know and why Orthman Conveying Systems, LLC is a name that keeps coming up in bulk handling operations around the world.
The Role of Screw Conveyors in Bulk Material Operations
A screw conveyor moves bulk materials through a rotating helical screw also called a flight inside a trough. What makes this technology so widely used isn’t just its mechanical simplicity; it’s the range of functions it can perform. Beyond basic horizontal transport, screw conveyors are used for distributing, collecting, mixing, heating and cooling, elevating, batching, and aerating bulk materials sometimes multiple functions within the same system.
Orthman Conveying Systems has built a global reputation on exactly this versatility. Their screw conveyors handle everything from alfalfa meal to zinc oxide a range that reflects the diverse industries and material types their systems are engineered to serve. That operational range is made possible by a standardized component system that allows configurations to be tailored to virtually any process requirement, incline, or discharge layout.
What Sets a Well-Engineered Screw Conveyor System Apart
Not all screw conveyor systems perform equally. The difference between a system that runs cleanly for decades and one that demands constant attention usually comes down to how well the components were specified for the application. Here are the factors that matter most:
- Standardized Parts for Easy Maintenance: Orthman uses a standardized set of components across their screw conveyor systems. This keeps the systems economical to purchase, easier to stock spare parts for, and faster to service when maintenance is required a practical advantage that reduces total cost of ownership over the life of the equipment.
- Flight and Pitch Configuration Options: The conveyor screw the component that physically moves the material can be fabricated in many different flight and pitch configurations. Different materials and process functions (mixing vs. straight transport, for example) require different screw geometry to perform correctly.
- Multiple Material of Construction Options: Conveyor screws and components can be fabricated from a variety of materials to match the product being handled whether that means standard carbon steel for dry industrial applications or specialized alloys for corrosive, abrasive, or food-grade environments.
- Enclosed Sanitary Construction: Components can be enclosed for sanitary construction, making Orthman screw conveyors a viable option for food processing, pharmaceutical, and other industries where contamination control is a hard requirement.
- Complete Power Transmission Packages: Orthman screw conveyors can be furnished with all necessary power transmission components, V-belts, sheaves, motors, and guards precision-designed to work together with the screw conveyor drive. This eliminates the guesswork of sourcing compatible components separately.
Where Screw Conveyors Deliver Real Operational Value
The ability to configure screw conveyor systems for a wide range of process functions is what makes them so valuable across different industries. The same underlying technology that moves grain in an agricultural facility can be configured to batch chemicals in a manufacturing plant, cool extruded food products in a processing line, or aerate dry bulk materials before packaging. What changes is the screw geometry, housing configuration, materials of construction, and drive setup.
Orthman screw conveyor systems are used across a broad range of applications, including:
- Distributing and collecting bulk materials across multiple feed or discharge points
- Mixing dry or semi-dry materials in production or processing lines
- Heating and cooling bulk products during processing
- Elevating materials at inclines where belt conveyors aren’t practical
- Batching precise quantities for downstream processes
- Aerating materials to prevent compaction or bridging
The ability to handle inclines and multiple discharge locations within a single system also makes screw conveyors a practical solution for facilities with complex layouts or multi-stage processes.
Why Orthman Conveying Systems Is a Trusted Name in Screw Conveyor Manufacturing
Orthman Conveying Systems, LLC, based in Cleburne, TX, has earned its position in the bulk handling industry through a combination of product diversity, engineering discipline, and a service network that supports customers after the equipment is installed. Their screw conveyor product line reflects the same principles that run through all their equipment: standardized components that are economical and easy to maintain, systems configurable to real-world process variants, and construction built to last.
The fact that Orthman screw conveyors handle materials from alfalfa meal to zinc oxide isn’t a marketing claim it’s a reflection of the engineering range their systems cover. Specialty components like 18-inch diameter flared screw conveyors speak to the depth of their fabrication capability, including non-standard configurations for applications that fall outside typical parameters.
Their parts and systems are readily available and backed by a responsive service network, a detail that matters significantly when equipment downtime affects production schedules.
Ready to Spec the Right Screw Conveyor System for Your Facility?
Whether you need a standard horizontal screw conveyor for a straightforward transport application or a custom-configured system for a multi-function process, Orthman Conveying Systems has the engineering experience and product depth to get you there. Their team can help you identify the right screw geometry, housing configuration, material of construction, and drive package for your specific material and process requirements.
Frequently Asked Questions About Screw Conveyors
What functions can a screw conveyor perform beyond basic material transport?
Screw conveyors are genuinely multi-functional. Beyond moving material from point A to point B, they can be configured to distribute material across multiple discharge points, collect material from multiple inlets, mix dry or semi-dry bulk products, heat or cool materials during transit, batch precise quantities, and aerate bulk materials to prevent compaction. The specific screw geometry, flight pitch, and housing configuration are what determine which functions a given system performs which is why working with an experienced manufacturer is important for getting the right result.
What types of materials can screw conveyors handle?
Screw conveyors can handle an enormous range of bulk materials like dry powders, granules, flakes, pellets, fibrous materials, and semi-viscous products. Orthman screw conveyors are used on materials ranging from alfalfa meal to zinc oxide, which gives a sense of how broad that range actually is. The key variables are bulk density, particle size, abrasiveness, moisture content, and flowability, all of which influence the screw design, housing material, and drive requirements. Matching those variables to the right configuration is what separates a system that runs reliably from one that wears out prematurely.
What flight and pitch configurations are available for conveyor screws?
Conveyor screws, the components that physically move material from the inlet to the discharge can be fabricated in many different flight and pitch configurations. Standard full-pitch flights are used for most basic transport applications, while half-pitch screws are common for inclined or to help meter flood fed inlets. Ribbon flights, cut flights, and paddle configurations serve mixing, aerating, or sticky-material applications. Orthman fabricates conveyor screws in a variety of configurations and materials to match the specific demands of each application.
Can screw conveyor systems handle inclined or angled conveying?
Yes. Screw conveyor systems can be configured to handle inclined conveying, though the angle of incline affects capacity and requires adjustments to screw geometry and speed. For steeper elevation requirements, Orthman also offers vertical screw conveyor systems, which are specifically engineered to lift material straight up using a synchronized horizontal feed screw and vertical screw driven by independent drives. The right solution depends on the elevation required, the material’s flowability, and the available space.
What does ‘sanitary construction’ mean for a screw conveyor, and when is it needed?
Sanitary construction refers to screw conveyor designs that minimize contamination risk typically through fully enclosed housings, smooth interior surfaces, and materials of construction that meet food-grade or pharmaceutical standards. Orthman screw conveyor components can be enclosed for sanitary construction, making them appropriate for food processing, nutraceutical, and similar industries where product purity standards are enforced. Specifying the right level of sanitary construction up front avoids costly retrofits later.
Does Orthman supply the complete drive package with their screw conveyor systems?
Yes. Orthman screw conveyors can be furnished with all necessary power transmission components, including V-belts, sheaves, motors, and guards all precision-designed to work with the screw conveyor drive. This eliminates the complexity of sourcing and integrating compatible drive components from separate suppliers. Getting the drive system right from the start ensures proper torque, speed, and power delivery for the material and capacity the system is designed to handle.
What makes Orthman screw conveyors easier to maintain than other systems?
Orthman uses a standardized set of parts across their screw conveyor systems, which has a direct impact on maintainability. Standardized components mean spare parts are more economical to stock and more readily available when something needs to be replaced. It also means service technicians can work across multiple conveyor lines in the same facility without needing to learn different systems. This design philosophy building for real-world serviceability, not just initial performance is part of what makes Orthman equipment a reliable long-term investment.
How do I get the Orthman Screw Conveyor Catalog or request a quote?
The Orthman Screw Conveyor Catalog is available for direct download from their website at orthmanconveying.com/. For quotes, application questions, or help specifying the right system for your needs, you can contact Orthman directly at 682-356-6200 or toll free at 877-664-2687. Industrial and distributor representatives are available nationwide their rep locator on the website makes it easy to find the right contact for your region.
