Page 70 - HOLE MAKING CATALOG p001-148

INDEXABLE DRILLS USER GUIDE

• When drilling stainless steel or high temperature • Prior to using 8D or 12D drills, it is recommended to drill a
alloys using the ICM drilling head, it is highly 0.5xD pre-hole using a short or centering drill.
recommended to apply high-pressure oil or 7-10% Enter the pre-hole at slow speed and feed until 2-5 mm
mineral or vegetable based oil emulsion. from its bottom. Start the cooling system and increase
rotation to the recommended drilling speed. Hold for 2-3
• Following is the recommended coolant seconds, then continue at the recommended drilling feed.
flow rate and pressure.
1 Pre-hole 0.5xD deep for centering
Coolant Flow Rate (liter/min)
30 flow
0.5xD
rate
2 Slow rotation and feed while entering the pre-hole
20
1.5xD
10
3 Maintain for 2-3 seconds and
5 activate the cooling system

6.8 12 16 20 25 4 Continue drilling at recommended cutting conditions
Drill Diameter D (mm)

Minimum Coolant Pressure (bar)

15
12 8, 12X D

5XD
10 3 X D
8 1.5 X D
5

3 25

6 12 16 20

Drill Diameter D (mm)

• For optimal performance, it is recommended to adjust
runout of outer points or chisel with a maximum of
0.02 mm. Large runout will influence drill
performance tool life and hole quality.

• No setup time is needed after indexing
the SUMOCHAM drill head.

• SUMOCHAM drills can be used either on
milling centers or lathe machines.

• When using SUMOCHAM drill in stationary (lathe)
applications, we recommend using the ISCAR GYRO
device or eccenter sleeve to reduce misalignment.
Misalignment will cause poor performance of the
SUMOCHAM drill or even tool breakage.

68 ISCAR