This allows for multiple machine use within the same building or structure without the same reinforcing measures required to house traditional vibrating screens.
The F-Class is also ideal for screening situations that require consistent, load independent performance at constant g-force in all operational modes. Featuring a unique and reliable, proven four-bearing technology, the F-Class minimises structural vibration and delivers a consistent stroke, which two-bearing screens cannot provide, and with the right media choice virtually eliminates blinding and pegging.
With the ability to handle the toughest applications, the F-Class is designed and built for the scalping and classifying of minerals, stones, sand and gravel.
The F-Class features an advanced eccentric shaft design, supported by four high performance, double spherical roller bearings. The double eccentric shaft creates a constant positive stroke that handles material volume spikes without losing momentum. As the eccentric shaft turns, the screen body is forced to follow the shaft movement.
While it travels upward, the counterbalance weights move in the opposite direction and create an equal force to that generated by the body. As a result, the forces cancel each other, allowing a dynamically balanced system that transmits minimal to no vibrations into the structure.
This allows multiple screens to be placed side by side while minimising the investments into heavy structures. Furthermore, the design keeps noise emissions low for a quieter system and reduced overall plant noise. These features are the reason why demanding producers for products such as limestone utilise the F-Class in buildings housing up to 45 units and up to eight stories while minimising the investments into the required structures.
The continual circular screening action provided by the eccentric design also produces a constant, optimised g-force. This not only maximises screening efficiency, it makes the F-Class effective in wet and dry applications.
Designed for high tonnage outputs, the F-Class can process up to 5000 tonnes per hour, as well as provide fast, accurate sizing of virtually any material ranging in cut size from 0.15 inches to 9.76 inches. In addition to traditional screening, the F-Class is often used before primary crushers to screen out fines and eliminate crusher wear. It precisely screens material from six inches down to 20 mesh.
To provide maximum versatility, the F-Class can be run with up to three screen decks. The unit features incline from 10 to 25 degrees and come with a base frame that allows for simple installation in a customer?s existing structure.
The F-Class features a rugged HUCK-bolted screen body fastening, allowing for extra strength and rigidity. Side plates are constructed with high strength carbon steel. The area surrounding the shaft assembly is strengthened with a reinforcing plate which ties together the side plate, screen panel and shaft assembly.
Global screening experts work to design the ideal screens for each application. Each unit is built on platforms that combine a machine width and a drive type, consisting of an eccentric shaft assembly with bearing sizes ranging from 120mm to 160mm. Within the platform, the customer chooses basic parameters, such as screen length and the quantity of decks the application requires.
Within these parameters, the customer then chooses between multiple variables, such as deck set-up, suspension systems, reinforcing plates, wear lining as well as stroke and speed combinations.
Every F-Class vibrating machine is born from substantial engineering experience. All screens undergo extensive testing, inspections and vibration analysis prior to shipping. These inspections assure proper workmanship, correct balance and smooth operation.
During commissioning on-site, the screen is again tested to make sure it achieves optimal performance within the customer?s specific operation and performance targets. The F-Class is backed by a standard 18 month warranty from date of shipment, 12 months from the installation date, or 6000 operation hours, whichever comes first. This warranty can be increased with optional customer-specific warranty upgrade packages.
Source: WS Tyler