Hole machining
E 8
- -
DP 9
06 5
02 6
04 7
5- Cutting Edge Length
6- Insert Thickness
S
W
In.Circle Dimension (mm)
S
W
Thickness description
Thickness mark
Example
I
I
Code
Length
Code
Length
00 = 0.79 T0 = 0.99 01 = 1.59 T1 = 1.98 02 = 2.38 T2 = 2.58 03 = 3.18 T3 = 3.97 04 = 4.76 T4 = 4.96 05 = 5.56 T5 = 5.95 06 = 6.35 07 = 7.94 09 = 9.53 11 = 11.11 12 = 12.70 14 = 14.29 15 = 15.88
5.56
03
3.8
6.35
06
6.35
04
4.3
7.94
05
5.4
8.0
08
8.0
9.525
09
9.525
06
6.5
12.7
12
12.7
08
8.7
Insert thickness "S" refers to the distance between cutting edge nose and bottom
7- Corner Radius
Example 04 = 0.4 08 = 0.8 12 = 1.2
8- Cutting Edge Shape
Example
Description
E F T
Honed cutting edge Sharp cutting edge
Negative land
9- Geometry Code
DP
1. DP geometry has high efficiency. Suitable for short hole high speed drilling. 2. Strong square insert with reinforced geometry offers excellent hole straightness. 3. Drilling holder with helical flute provides excellent chip evacuation and high hole precision.
DU/DG
1. Suitable cutting angle makes perfect balance for the cutting force. 2. General purpose geometry combined with two grades are suitable for P, M, K, S materials, especially good for the chip control in soft materials. 3. Obtains good surface finish. 4. Good versatility. It's suitable for rotating and non-rotating machining.
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