DIAMOND CORE BIT 20MM FOR TILES

Ø20mm Diamond core bit

Application:
The diamond core bit is used to drill holes in:

Ceramic tiles
Marble
Grade 5 porcelain (hardest)
Granite
Glass
Slate

The diamond core cuts faster, smoother and lasts longer than any other core 
drills.
How to use the diamond core bit:
The diamond core drill bit must be used with water at all times when 
drilling. The water serves as a coolant to prevent the diamonds from 
overheating. The maximum allowable temperature for a diamond core bit is 500°C.
There is no pilot drill with the diamond core bit. A low rpm rotary drill 
with a planetary gearbox is required to be used with a diamond core bit. It is 
possible to use a cordless drill, but in the lowest gear setting. No hammer 
action is used.

Tightly fasten the diamond core bit in the drill's chuck.
Keep the bit steady at a 45° angle 
with the starting point on the edge of the assigned area to be 
drilled whilst the bit is rotating.
A notch will be made (this is normal). 
Gradually move the drill from 45° to 90° and continue drilling until 
finished.
Allow the diamond core bit to cool down completely before proceeding to 
drill another hole.

Water can be applied by:

spraying water on the surface,
using a wet sponge,
attaching a water feed device. This is necessary when drilling into a 
wall tile.

Please have a look at the video in the tabs above 
showing how to use the diamond core bit.
An indication of the correct spindle speed:


DIAMOND CORE BIT DIAMETER
SPINDLE SPEED


ø5.0mm
800 rpm


ø6.0mm
600 rpm


ø7.0mm
500 rpm


ø8.0mm
500 rpm


Ø10.0mm
400 rpm


More than Ø10.0mm (>10.0mm)
less than 400 rpm


 
IMPORTANT:

The tool life will mostly depend on the proper usage and the hardness of the items 
drilled into. It is normal for a diamond core bit to last up to 10 or more 
drilled holes in hard tiles. Please remember to always use 
water when drilling with diamond core bits.