Custom screw jacks used in dough sheeters and gauge rolls

In the production of biscuits and similar food products, the sheet forming and cutting process requires a three-roll sheeter (pictured), which takes either a bulk or metered feed of dough and forms a compacted sheet ready for the gauge rolls. The sheeter three-roll arrangement provides optimum control over the size and condition of the dough sheet. Gauge rolls then achieve and maintain the desired thickness of a sheet of biscuit dough. This is a key function in the forming and cutting process for crackers and hard sweet biscuits. Repeatable precision is matched by low operating costs. Baker Perkins' TruClean sheeters and gauge rolls are designed to meet the latest industry requirements for hygienic operation.

The sheeters and gauge rolls each have a set of two mechanically linked Kelston cubic screw jacks that are driven by a geared motor to accurately raise and lower an eccentrically mounted roll, giving fine gap adjustment. Laminated and sheeted products are gauged to the chosen thickness, relaxed, and then embossed and cut before passing into an oven. Typically one sheeter and three gauge roll stations are incorporated in a biscuit line.

10kN and 25kN translating screw jacks have been custom built by Kelston to achieve the demanding hygienic and wash-down standards set by Baker Perkins. They feature double clevis mounting and Kelston's own design of screw cover that encloses the lifting screw threads, even when the jacks are fully extended. External parts of the screw jacks are made from 316 grade stainless steel and 6082T6 aluminium finished with hard-wearing matt anodising.

Follow the link for more information about cubic screw jacks from Kelston Precision Gears.