Shaftless Screw Conveyor Engineering Guide

KWS Shaftless Screw Conveyors are highly efficient at metering and conveying a variety of bulk materials. Better performance is achieved through zero-clearance between the trough and spiral, improving conveying efficiency and eliminating many of the flow-impeding issues common with shafted screw conveyors. Higher trough loading allows for lower operating speeds. Lower capital cost and lower overall maintenance costs are realized from equipment designed to require fewer parts. KWS Shaftless Screw Conveyors are designed for greater flexibility and efficiency in plant layout, providing for end-to-end, side inlet/discharge and vertical configurations.

Shaftless Screw Conveyor Engineering Guide – Index

Advantages of Using Shaftless Screw Conveyors

• Ideal for handling free-flowing to sticky and sluggish bulk materials
• Improved conveying efficiency when compared to other types of conveyors
• Greater flexibility for plant layout due to multiple configurations available
• Internal bearings are eliminated

Every KWS conveyor system is manufactured in the USA by highly skilled craftsmen dedicated to producing quality products every day. KWS designs and manufactures shaftless screw conveyors to meet the needs of many industries, including chemical, rendering, wood products and wastewater treatment. KWS Shaftless Screw Conveyors efficiently convey dry, semi-fluid or sticky bulk materials. The shaftless design provides a non-clogging conveying surface by eliminating the need for intermediate shaft bearings. Bulk materials discharged from centrifuges, filter presses or mixers can easily be metered or conveyed using a shaftless screw conveyor. The perfect solution for handling bulk materials with high moisture content is the KWS Shaftless Screw Conveyor. KWS developed the industry standards for shaftless screw conveyors and continues to create new and improved design standards. The KWS-350 high strength alloy spirals are the strongest, hardest and toughest in the industry.

Frequently Asked Questions

What is a shaftless screw conveyor?

Shaftless screw conveyors feature a continuous, non-clogging conveying surface without a center pipe, making them ideal for handling sticky, sluggish, high-moisture, and other difficult-to-convey materials. By eliminating the center shaft, these conveyors minimize material buildup and allow materials that would typically adhere to a traditional shafted screw to be conveyed efficiently and reliably. Shaftless screws ride on liners within the conveyor trough creating zero clearance between the spiral and trough. For more information, please review our Shaftless Screw Conveyor Engineering Guide.