Insert Gundrill
Single Flute Gundrill
Two Flute Gundrill
Stepped Gundrill
Gundrill Accessories
Insert BTA
BTA Drill
BTA Drill Tube
Gundrill Repair
 
  STS INSERT BTA Characteristics
  - Diameter Range : 16mm ~ 33mm
  - Special size available
  - INSERT BTA having one cutting Insert & one chip-mouth
  - Improved chip evacuation through one chip-mouth by dividing long chip into 4 small segments
  - Improved BTA body tool life compared with standard Insert BTA consisting of three inserts and two chip-mouths
  - Hole drilling accuracy - 0.03 ~ + 0.01 mm by applying polished insert and guide pads
 
     
 
 
     
 
Insert BTA
Diameter(mm)
Insert
Guide pad
Insert
Insert Screw
Wrench
Pad
Pad Screw
Wrench
16
IDI1516
DST-2505S
(M2.5)
T8
IDP1516
DST-2252
(M2.2)
T7
17
IDI1718
DST-2555S
(M2.5)
T8
IDP1718
DST-2555
(M2.5)
T7
18
19
IDI1920
DST-3062
(M3.0)
T9
IDP1920
DST-2555
(M2.5)
T7
20
21
IDI2122
DST-3072
(M3.0)
T9
IDP2122
DST-2565
(M2.5)
T7
22
23
IDI2325
DST-3508
(M3.5)
T15
IDP2325
DST-2565
(M2.5)
T7
24
25
26
IDI2628
DST-3585
(M3.5)
T15
IDP2628
DST-2565
(M2.5)
T7
27
28
29
IDI2932
DST-0510
(M5.0)
T20
IDP2932
DST-3072
(M3.0)
T9
30
31
32
33
 
     
     
  STS INSERT BTA BODY Detail Spec.
 
     
 
 
     
 
Diameter D
Range(mm)
Main Diameter
D(mm)
L1(mm)
L2(mm)
d(mm)
Drill Tube
15.60~16.59
16
63.0
60.4
12.6
14
16.60~17.70
17
66.3
63.3
13.6
15
17.71~18.59
18
67.3
64.3
14.5
16
18.60~20.59
19
67.3
64.2
15.5
17
20
67.3
64.2
15.5
20.60~21.80
21
70.4
67.0
16
18
21.81~22.59
22
73.8
70.4
18
20
22.60~24.10
23
74.1
70.5
18
24
74.1
70.5
18
24.11~25.59
25
74.1
70.5
19.5
22
25.60~26.40
26
74.2
70.3
19.5
26.41~28.59
27
74.2
70.3
21
24
28
74.2
70.3
21
28.60~31.00
29
81.5
77.4
23.5
26
30
81.5
77.4
23.5
31
81.5
77.4
23.5
31.01~33.30
32
81.5
77.4
25.5
28
33
81.5
77.4
25.5
 
     
     
  IDI Insert Tip Specification
  - Precise Insert tip with five-polished surfaces for hole size accuracy
  - Super micro grain carbide & hybrid multi-layer PVD coating for improved deep-hole drilling performance
  - Applicable to various materials such as General carbon steel, cast iron, difficult-to-cut material & STS
 
     
 
 
     
 
Insert
Diameter
Range(mm)
W
H
T
Screw
Wrench
IDI1516
14.00 ~ 16.59
8.6
10.5
2.75
DST-2505S
M2.5
T8
IDI1718
16.60 ~ 18.59
9.6
11.5
3.25
DST-2555S
M2.5
T8
IDI1920
18.60 ~ 20.59
10.6
13
3.45
DST-3062
M3.0
T9
IDI2122
20.60 ~ 22.59
11.7
14.5
3.8
DST-3072
M3.0
T9
IDI2325
22.60 ~ 25.59
13.2
15
4.25
DST-3508
M3.5
T15
IDI2628
25.60 ~ 28.59
14.7
15
4.5
DST-3585
M3.5
T15
IDI2932
28.60 ~ 33.30
16.9
18
5
DST-0510
M5.0
T20
 
     
     
  IDP Guide Pad Specification
  - Precise pad tip with six-polished surfaces for hole size accuracy
  - Good wear materials with a low coefficient of friction for improved guide performance
 
     
 
 
     
 
Pad
Diameter Range
W
H
T
R
Screw
Wrench
IDI1516
14.00 ~ 16.59
5.19
20
2.5
7
DST-2252
M2.5
T7
IDI1718
16.60 ~ 18.59
5.99
23.2
3
8
DST-2555
M2.5
T7
IDI1920
18.60 ~ 20.59
5.99
23.2
3
9
DST-2555
M3.0
T7
IDI2122
20.60 ~ 22.59
5.99
23.2
3.4
10
DST-2565
M3.0
T7
IDI2325
22.60 ~ 25.59
5.99
23.2
3.4
11
DST-2565
M3.5
T7
IDI2628
25.60 ~ 28.59
5.99
23.2
3.4
12
DST-2565
M3.5
T7
IDI2932
28.60 ~ 33.30
7.5
26
3.8
14
DST-3072
M5.0
T9