Scheppach DP19Vario Original Bedienungsanleitung Seite 36

The drill blocks the workpiece.
Excessive run and wobbling of the
drill
36 | GB
Workpiece and drill are tilted or
speed is too high.
Inadequate V-belt tension
Bent drill.
Excessive wear on the spindle
bearings.
The drill is not centred in the chuck.
Chuck is not firmly fixed.
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Reline the workpiece or fix it. See
also "Position the workpiece"
Set the V-belt tension. See also
"Setting of the speed and V-belt
tension".
Use a straight drill.
Replace the spindle bearing.
Check the centering. See also
"Setting the drill"
Correctly fix the chuck. See also
"Installing the drill chuck"