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F-CLASS - 17 Pages

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Catalogue excerpts

Technical Specifications F-Class Four Bearing Vibrating Screens

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Thank you for your interest in the Tycan F-Class. General Information W.S. Tyler offers the F-Class as the number one vibrating screen for applications requiring a maximum degree of continuity, load independency and minimal force transmission. It is designed and constructed to be a rugged, dependable vibrating screen with many built-in features that are considered extras by other manufacturers. The circle-throw motion of the vibrating machine is developed by a double eccentric, counterbalanced shaft that is supported by four high performance, double spherical roller bearings. The motion of the...

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Figure 1 F-Class Si7e Availability Design Tools The F-Class is modeled in 3D environment prior to production. Using a 3D CAD system, the engineer produces a geometrically accurate, unambiguous, digital product model that is utilized throughout product development, manufacturing and assembly. Interacting with 3D model speeds up design, encourages innovation and identifies errors. It enables engineers to visually evaluate interference between parts, complicated geometric features, required tolerances, mechanism motion and assembly structure as the product evolves. Further, the virtual prototype...

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Figure 2 3-D CAD model showing Tycan F-Class Features (Application Dependent)

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• Drive System: Circle throw developed by double eccentric, counterbalanced shaft • Drive Transmission: V-Belts and pulleys • Drive Unit: Electric Motor STANDARD SPEEDS STANDARD THROW • Alloy steel shaft ground to precision tolerances • Heavy-duty, high performance, self-aligning spherical roller screen bearings with inner races fitted to the shaft and outer races mounted in the cast ductile iron bearing housing • "Loose-on-the-shaft" bearings provide easy installation, replacement, and equal load distribution • Labyrinth seals prevent grit or foreign matter from reaching the bearings • Steel...

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Side Plate • high strength carbon steel (ASTM A-36) • high rigidity due to formed 90"bend at top and 45° bend at bottom of side plate • body brackets serve as stiffeners in the mounting region of the screen • entire assembly is integrated by the use of highly durable HUCK™ bolt • area around the shaft assembly is reinforced with a reinforcing plate tying together the side plate, screen panel and shaft assembly Reinforcing Piote Figure 3 Side Plate and Reinforcing Mem

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Screen Panel • one piece panel design • HUCK™-Bolted screen body fastening for extra strength and rigidity • Formed side rail (90° top and 45° bottom bends) • rail options available to accommodate suitable media o flat deck e.g. perforated plate or rubber deck o rails for any urethane style panels (pin and sleeve arrangement or to accept grooved media) o side tensioned media • Finger Deck screen panel to accommodate Finger Deck media Figure 4 Screen Panel Figure 5 Finger Deck Screen Panel

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Feed Box and Back Plate • high strength carbon steel (ASTM A-36) • reinforced with gussets • interchangeable feed box and back plate (in most cases) • replaceable feed box liners available in QT400, urethane, rubber or high chromium • back plate increases the rigidity of the feed end of the machine

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Base Frame • high strength carbon steel (ASTM A-36) • heavy tubular members welded together to resist racking • designed to have adequate strength and stiffness to support the screen body thereby eliminating the need for a continuous structural beam under the base • motor support bolted to side of main beam of base frame can be mounted for either right or left side drive • sliding motor support base to facilitate proper tensioning of the V-belts Hanger Bracket—^ Figure 8 F-Class Base Fra

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The double eccentric shaft of an F-Class screen is supported by four bearings. The housings for the inside eccentric bearings are mounted to the side plates of the screen body and the housings for the outside eccentric bearings are supported by the side arms. The bearings are mounted on the eccentric positions of the shaft. The two pairs of eccentric positions are opposed in their location with respect to the center of rotation of the shaft. With this arrangement both the screen body and the side arms will be driven in a circle throw path of motion by the rotation of the shaft. Since the screen...

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• Supported by four high performance, double spherical roller screen bearings • PTFE coated bearings - PTFE coated bore helps minimize fretting corrosion between the bore of the bearing and the shaft caused by the necessary loose fit • Labyrinth seals prevent grit or foreign matter from reaching the bearings while preventing leakage of grease • Seamless steel tube housing with cast iron tube heads supplies reinforcement surrounding shaft area and provides lateral stability as well as shaft protection • Permanently installed tube housing allows for easy bearing exchange without seal breakage Figure...

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Mounting Options The F-Class screen is always provided with a base frame. The F-Class screen comes with one of two suspension units: 1. Direct support of the base frame with shear rubber mounts. Figure 11 Shear Rubber Mounting Unit

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2. Direct Support with Ty-Rider mounts. Figure 12 Ty-Rider Mounted F-Cl; Ty-Rider mounts are offered as an alternative to rubber mounts. Ty-Rider mounts are based upon the principle of four elastomeric elements inside the base of each oscillating unit. The elements transmit the oscillations of a system, while simultaneously damping vibration, shock, and noise. Due to the unique design, neither shear nor bending stresses occur at the support points, assuring long life. The key features that make Ty-Rider mounts superior to rubber mounts are: • Extended life - up to 3 times longer • Higher load...

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Vibration Analysis Inspection Every F-Class vibrating machine is backed by years of engineering experience. Prior to shipment each machine is carefully examined and operated over a prolonged period assuring correct balance, satisfactory bearing operating temperatures, smooth operation, acceptable noise levels, and quality workmanship. Each machine is evaluated using a computer vibration analysis tool to find any dynamic irregularities in a vibrating screen. This information makes it possible to view in the monitor the orbit points, peak to peak, median acceleration, displacements, frequency (RPM)...

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