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T-CLASS - 17 Pages

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Catalogue excerpts

Technical Specifications T-Class Two Bearing Vibrating Screens

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Thank you for your interest in the Tycan T-Class. General Information W.S. Tyler offers the T-Class vibrating screen with field proven features that make it a versatile performer. It is designed to be a rugged dependable vibrating screen for use in the screening of a wide variety of materials. The circle throw motion of the T-Class Series is developed by a unbalanced concentric shaft assembly, which is supported by two high performance, double spherical roller screen bearings. The circle throw action is very effective in moving coarse material to the top of the bed so that the fines and near mesh...

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T-Class 2 3 4 Width (ft) 5 6 7 8 4 6 8 Length (ft) 10 12 14 16 18 20 22 24 Figure 1 T-Class Size Availability Design Tools The T-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...

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

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• Drive System: Circle throw developed by counterbalanced shaft assembly • 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 counterweighted...

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• Wheel guards and drive guards provide protection from rotating parts 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 tying in the side plate and screen panels • entire assembly is integrated by the use of highly durable HUCK™ bolt • for machines with larger bearing sizes, the area around the shaft assembly is reinforced with a reinforcing plate or ring tying together the side plate, screen panel and shaft assembly Figure 3 Side Plate and...

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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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Drive • • • • • • • • • • Concentric, unbalanced, free swing shaft assembly Circle throw motion developed by a counterbalanced shaft assembly Calculated balance weights Supported by two high performance, double spherical roller screen bearings PTFE Explorer Bearings – PTFE coated bore helps minimize fretting corrosion between the bore of the bearing and the shaft caused by the necessary loose fit design Single point greasing per bearing minimizes grease points Labyrinth seals prevent grit or foreign matter from reaching the bearings while preventing leakage of grease Seamless steel tube housing...

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Mounting Options The T-Class screen can be designed with one of four mounting options: 1. Direct support with coil springs used in conjunction with stabilizing units. The stabilizing units provide lateral stability and control machine movement limiting critical frequencies during start up and shut down. Stabilizing Units Figure 11 Coil Springs and Stabilizing Unit

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Direct support with Ty-Rider mounts (standard on machines smaller than 5' Figure 12 Ty-Rider Mounted T-Class Ty-Rider mounts are offered as an alternative to conventional spring mounting systems. Ty-Rider mounts are based upon the principle of four elastomeric elements inside the base of each osciliating 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. Figure 13 Double Ty-Rider Configuration

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The key features of Ty-Rider mounts that are superior to coil springs are: • Extended life • Lateral stability • Support tensile, compressive and shear stresses • Reduced noise level • Prevents excessive and uncontrolled oscillation through start-up and shut Figure 14 Cable Suspension 4. Combination of floor mounting and cable suspension.

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Vibration Analysis Inspection Every T-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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Figure 16 Vibration Analysis Orbit Plots A software suite processes the information resulting in a report featuring detail information for each measuring point and an evaluation for the entire machine. The summary brief points to modifications that are necessary to achieve optimum

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