Arbor 14-30mm, Hex Shank 9.50mm 210026
The arbor comes inclusive center drill article 210032 with length 80 mm.
This 80 mm long center drill rises above the hole saws with diameters:
Diameter 14 - 16 mm, approx. 5 mm
Diameter 20 - 30 mm, approx. 14 mm
Diameter 32 - 152 mm, approx. 18 mm
For hard materials such as ceramic, porcelain, tiles, stone etc. do we therefore recommend from hole saw Diameter 20 mm the shorter center drill article Art. 210046, length 70 mm.
Highly recommended for drilling in floor tiles with underneath floor heating loops. The longer center drill could damage the heating loops.
The center drill must be used only at the start of the drilling operation. After the hole saw has cut about 1 mm into the material, the center drill can be removed. Use water as a coolant to prevent heat build up on the cutting surface.
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