Most often used for pre-screening, the typical feed materials that require grizzly screens versus the typical vibrating screen are very coarse aggregates. Read More…
Leading Manufacturers
Eriez
Erie, PA | 800-345-4946ERIEZ is a global manufacturer of an entire range of vibratory feeders and related machinery. We serve all the process industries, including food, chemical, pharmaceutical, ceramics, glass, packaging, metalworking, minerals processing and others.
Carrier Vibrating Equipment, Inc.
Louisville, KY | 502-969-3171Internationally known, Carrier Vibrating Equipment specializes in manufacturing vibratory feeders and screeners. We have been pioneers in process equipment technology for over 60 years.
General Kinematics
Crystal Lake, IL | 815-455-3222At General Kinematics, we design and manufacture vibratory feeders, conveyors and more for applications in foundries, recycling mining, coal and food processing.
Rodix Inc.
Rockford, IL | 800-562-1868Rodix manufactures vibratory feeder controls, inline track drives, drive bases, & bulk storage hoppers for part feeding systems. Our line of vibratory feeder controls feature variable amplitude, variable frequency, line-voltage compensation, UL/cUL Listed, CE Marked, and more. We have experience working with machine integrators, vibratory feed system builders, and manufacturers.
U.S. Automation, LLC
Huntertown, IN | 260-338-1100U.S. Automation was established in 2003 to provide our customers with high quality, cost-effective, state of the art automation equipment, palletizing/conveyor systems, vibratory feeder systems, replacement parts & more. With our combined 150 years of experience and our internal machining, we are able to design and build most products in-house, thereby controlling and maintaining cost and quality.
Sweco
Florence, KY | 859-371-4360Sweco engineers and manufactures equipment for particle separation and size reduction. These processes are accomplished through the use of vibrating screens. Some of our quality, efficient equipment includes round and rectangular separators plus other separation product.
Grizzly Screens - General KinematicsAble to handle both wet and dry materials, grizzly screens often handle materials such as minerals, ore, blasted or ripped rock, gypsum, foundry materials and large stone. Grizzly screens can offer multiple sizing decks on a single unit as well as side plates that provide additional height to ensure that large materials stay on the screen.
Grizzly screens can provide either linear or circular motion and each type offers its own advantages. Linear motion grizzly screens work best for scalping ahead of primary cone crushers in mining applications, while circular motion grizzly screens for heavy duty medium to fine pre or post-screening.
Primarily used for the heavy duty screening of undersized materials in bulk material handling applications, the most common industries that utilize grizzly screens include mining, construction, foundry, recycling and industrial.
Most often fed through either a pan or apron feeder, grizzly screens consist of an inclined or horizontal screen with parallel sets of grizzly bars that are held by spacers at varied openings depending on the size of the material being screened.
The grizzly bars are often constructed of manganese steel, but can also be made from ceramic materials. Typically, grizzly screens consist of a screening body is connected to a tray; materials enter the vibrating screen through a feed box located at the base of the tray. The vibrators are often either electromagnetic or electromechanical, and are placed at intervals underneath the screening body. While electromechanical vibrators are more common and simpler in design, electromagnetic vibrators offer a smoother conveying motion.
The suspending device supports the structural framework that the screens are mounted on and are typically either leaf springs or steel coil springs. These springs serve as shock absorbers as well as ensuring that the vibrations occur at a natural frequency. An electric motor is attached to the structural framework and causes the materials to be vibrated in a specific direction.
Grizzly screens are able to provide either linear motion or circular motion through the use of roller bearings, shafts or couplings.