Our GAL series vacuum tables are made from cast aluminium and provide a high level of stability, in combination with exceptional clamping characteristics.
There are two different surfaces available:
The classical variant, with a hole pattern from 10 mm multi-purpose bores represents the ideal compromise between low-level leakage loss during milling and the requirement of enabling the clamping of small workpieces.
With this process, work is carried out with a pump which can provide a delivery of 1.2m/h.
For workpieces with a minimum width of 30 mm, there is a leakage-optimized surface, with which 3 times as many bores can be opened as with the classical variant before the workpiece loses its grip.
Here a vacuum pump with 0.6 - 0.8 m/h per dm² is usually adequate. The same perforated rubber mats are available for both variants to ensure that the vacuum table surface is not damaged during through-milling of the workpieces.
At the same time, the perforated rubber mat acts to increase the friction coefficient and also acts as a gasket providing a seal around the workpiece.
We use a perforated rubber mat in different geometrical shapes.
With careful use you can easily get 100 hours of use from an individual mat.
The through-milling depth in this case is generally less than 0.2 mm. The standard dimension of the perforated rubber mat is 1 mm; special designs with 2 - 3 mm thickness are available. For all GAL vacuum tables, a vacuum distributor is included in the series for the activation of individual chambers.
According to size, the vacuum table is subdivided into several vacuum chambers, which are arranged appropriately and separated from each other.
The vacuum is then drawn through a manifold with quick star fittings.
The manifold has ball valves which can be open and closed according to which chamber on the table the user wishes to allow vacuum to.