EIBENSTOCK BST 152/53 Original Instructions Manual page 21

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At the beginning, drill very slowly, since the drill bit does only starts cutting with a
fraction of the cut surface in the material. If you drill too fast or with too much
pressure, the drill bit could get jammed.
In order to reach the max. drilling depth, you probably have to use an
extension for the drill bit!
Demounting the Core Drill Unit

Move the machine holder with the core drill upwards until it locks in the final
top position.

Remove the drill bit.

Loosen the fastening nut (F) (see page 15)

While doing so, hold the drill rig firmly!

Remove the drill rig.

Unscrew the quick action clamping screw (D) (see page 15).
After drilling put the column back in the
90°position.
The scale on the toothed column makes adjusting
the drilling angle easier.
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