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SCREW CONVEYORS
Engineering Guide & Parts Catalogue
All rights reserved © WAMGROUP

CATALOG 2006
ISSUE CIRCULA TION DATE OF LATEST UPDATE

CREATION DATE

2002

A

100

04.06

The history of the screw conveyor-one of man’s simplest and most efficient tools for the conveying of bulk materials can be traced back more than 2,000 years to ancient Greece and the development of the"Archimedean Screw." About 240 b.c., Archimedes, a renowned Greek mathematician and inventor, perfected a spiraled tubular device for removing water from the hold of a large ship. In doing so, he became the first man to put the screw conveyor principle into practical application. Today the screw conveyor plays an important role in a wide variety of industries. Because it is compact, versatile andeconomical, it has become one of the most useful mechanisms for the transport and distribution of bulk materials. Aside from its utility as a means of moving materials, the screw conveyor, with certain modifications and/or variations in mechanical arrangement, may also be used to perform, a number of other important functions. It can be used to mix, blend or agitate. In applications where closecontrol of material flow is critical, the screw conveyor may be used as a highly accurate metering device. Operating in a jacketed housing it may be used as a heating or cooling device. Because it can be effectively sealed, it is extremely valuable in applications where dust or fumes must be confined inside the conveyor or where moisture or contaminants must be kept out. Since the company wasfirst established, WAM, Inc., has specialized in the design and manufacture of screw conveyor equipment and has built its reputation in this field. No matter what your requirements, you may be assured that WAM, Inc., is always a dependable source for quality and reliability in screw conveyor equipment and related components.

SCREW CONVEYORS
Equipment for Processing & Transporting all BulkMaterials

WAM, Inc. SCREW CONVEYORS ARE DESIGNED AND FABRICATED TO
ESTABLISHED INDUSTRY STANDARDS

CATALOG 2006

SCREW CONVEYORS
TABLE OF CONTENTS
4

ENGINEERING SECTION

Page

Introduction............................................................................................................................................................................. 2Design...................................................................................................................................................................................... 5 Bulk Material Characteristics............................................................................................................................................... 6 → 10 Bulk Material Characteristics Table1-2.............................................................................................................................. 11 → 21 Selection of Conveyor Size and Speed............................................................................................................................... 22 Capacity Horizontal Screw Conveyors Table1-6............................................................................................................... 23 Lump Size Limitations........................................................................................................................................................... 24 ComponentSelection............................................................................................................................................................ 25 Bearing Selection................................................................................................................................................................... 26 Horsepower Requirements................................................................................................................................................. 27 Horsepower Factor...
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