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DRILLING (INDEXABLE TYPE)
TAW
RECOMMENDED CUTTING CONDITIONS
Drill Diameter & 14.0 & 15.4 & 15.5 & 18.4 & 18.5 & 21.4
Work Material Conditions Cutting Speed Feed Cutting Speed Feed Cutting Speed Feed
P Mild Steel (mm/rev) (m/min) (mm/rev) (m/min) (mm/rev)
Hardness (m/min)
< 180HB 70 (6090) 0.20 (0.15 0.25) 80 (60 100) 0.25 (0.20 0.30) 90 (70110) 0.25 (0.20 0.30)
Carbon Steel 180 280HB 70 (6090) 0.20 (0.150.25) 80 (60100) 0.25 (0.200.30) 80 (60100) 0.25 (0.20 0.30)
Alloy Steel 280 350HB 60 (5080) 0.15 (0.120.18) 70 (5090) 0.20 (0.150.25) 70 (5090) 0.20 (0.15 0.25)
M Stainless Steel < 200HB 50 (4060) 0.15 (0.120.18) 50 (40 60) 0.15 (0.12 0.18) 60 (5070) 0.20 (0.15 0.22)
K Cast Iron 70 (5090) 0.20 (0.150.25) 80 (6090) 0.25 (0.200.30) 90 (70110) 0.25 (0.20 0.30)
Tensile Strength 70 (5090) 0.20 (0.150.25) 80 (6090) 0.25 (0.200.30) 80 (6090) 0.25 (0.20 0.30)
Ductile Cast Iron < 350N/mm2
Tensile Strength
< 450N/mm2
Drill Diameter & 21.5 & 24.4 & 24.5 & 27.4 & 27.5 & 30.4
Work Material Conditions Cutting Speed Feed Cutting Speed Feed Cutting Speed Feed
P Mild Steel (mm/rev) (m/min) (mm/rev) (m/min) (mm/rev)
Hardness (m/min)
< 180HB 100 (80120) 0.30 (0.250.35) 110 (80120) 0.30 (0.250.35) 110 (80120) 0.30 (0.25 0.35)
Carbon Steel 180 280HB 90 (70110) 0.30 (0.250.35) 100 (80120) 0.30 (0.250.35) 100 (80120) 0.30 (0.25 0.35)
Alloy Steel 280 350HB 80 (60100) 0.25 (0.200.30) 90 (70110) 0.25 (0.200.30) 90 (70110) 0.25 (0.20 0.30)
M Stainless Steel < 200HB 60 (5070) 0.20 (0.150.22) 70 (60 80) 0.25 (0.20 0.28) 70 (6080) 0.25 (0.20 0.28)
K Cast Iron 100 (80110) 0.35 (0.250.40) 110 (90120) 0.35 (0.250.40) 110 (90120) 0.40 (0.30 0.45)
Tensile Strength 0.30 (0.250.35) 100 (80110) 0.30 (0.25 0.35) 100 (80 110) 0.30 (0.25 0.35)
Ductile Cast Iron < 350N/mm2 90 (60100)
Tensile Strength
< 450N/mm2
(Note 1) H type honing is recommended when machining mild steel and stainless steel.
(Note 2) Recommended for use only with a rigid machine and set up. Use the internal coolant system when machining stainless steel.
(MQL and mist machining should not be used.)
DRILLING TAW DRILLS y HONE WIDTH (Honing Standard) Hone Width (mm)
If an insert with honing other than standard is needed, please order Honing Type 0
using the symbols below. F 0.02 0.05
G 0.05 0.10
(Insert Order Number) H 0.10 0.15
0.15 0.20
TAWNH1400To -(Standard) 0.20 0.25
K 0.25 0.30
TAW H : H Type Honing Symbol S
Product Name None : U Type M
N : General Use Insert Diameter Honing Type
B : For Bridges
CUTTING y NOTES ON USE
DATA
INSERT INSTALLATION
a Remove the clamp screw to install the insert. (H type insert)
a Loosen the clamp screw to install the insert. (U type insert)
a Correctly mesh the insert and the holder serrations, then slide the insert to the bottom of the slot.
a Fasten the clamp screw using the torque wrench provided while holding the insert lightly as shown. (Figure 1)
a Check there is no gap between the bottom of the insert and holder. (Figure 2)
OK NG
Fig. 1 Fig. 2 Clearance
INSERT REPLACEMENT
a Thoroughly clean the serrations of the holder before installing a new insert.
Remove heavy dirt in the holder serrations by using the cleaning plate provided.
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