Microbore Tooling Systems

Fine Boring Systems & Deep Hole Drilling

Microbore® Adaptor Bushes & Build In Units - Technical Information

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Microbore Press In Adaptor Bushes - Diagram 1

Part Number Angular Mounted

Part Number Square Mounted

Microbore Hole Size

A

B

C

D

E

F

Metric Lock Screw

2

19.9

12.0

14.5

10.0

6.8

2.5

MS103

3

24.9

15.0

18.0

12.5

8.9

2.5

MS106

5

35.9

25.0

29.0

20.5

13.2

3.0

MS109

7

47.9

32.0

39.0

28.5

18.0

3.0

MS113

10

55.9

38.0

51.0

40.0

23.0

3.0

MS116


Installation Data

Press In Adaptor Bushes - Installation Data

Part Number Angular Mounted

Part Number Square Mounted

Microbore Hole Size

A

**B

C

D

E

F

G

H

J

N

2

20.0 20.1

12.0

16.0

12.0

8.6 8.5

2.5

7.0

6.5

8.0

18.5

3

25.0 25.1

15.0

19.0

14.0

10.6 10.5

2.5

7.0

8.0

11.5

25.0

5

36.0 36.1

25.0

30.0

22.0

15.6 15.5

3.0

10.0

13.0

16.0

35.0

7

48.0 48.1

32.0

41.0

31.0

20.6 20.5

3.0

10.0

20.0

24.0

45.0

10

56.0 56.1

38.0

53.0

43.0

24.8 24.6

3.0

10.0

25.0

32.0

60.0

** Machine Diameter ‘B’ for 0.005 to 0.25 interference fit with actual bush diameter ‘B’

Microbore 'CM' Style Adaptor Bushes - Installation Information Diagram

Part Number Angular Mounted

Part Number Square Mounted

Microbore Hole Size

A

B

C

D

E

F

G

H

I

J

K

2

19.0

16.0

4.6

3.2

9.0

2.8

11.5

16.0

9.65 ±0.02

M3

2.5

3

25.0

20.0

4.6

3.2

9.0

4.0

15.5

1.6

12.5 ±0.05

M3

3.8

5

30.0

22.0

6.5

4.3

13.0

5.0

24.0

1.8

15.4 ±0.05

M4

5.0

7

46.0

32.0

11.6

5.4

16.0

6.3

33.0

23.0 ±0.05

M5

7.5

Microbore 'CM' Style Bush & Unit - Diagram 1

Microbore Bush & Unit

ØD min

ØDc

S

R

T

Insert

26.0

24.0

9.7

2.0

1.3

TCMT06T104

30.0

28.0

13.4

2.4

2.6

TCMT090204

40.0

38.0

16.0

5.6

0.2

TCMT110204

60.0

58.0

25.4

7.9

-1.6

TCMT16T304

NOTE: ØD is the minimum bore size using a bar specially designed for the purpose.
‘T’ dimn. is to insert sharp corner, a minus sign denotes insert is behind unit centreline.

Spare Parts Included as Bush and Unit

Dial
Washer
Lock Screw
Spring Washer
Insert Screw
Bush Screw
Allen Key
Insert Key
Bush

Unit 1

Dial 2

Washer 3

Lock Screw 4

Spring Washer 5

Insert Screw 6

Bush Screw 7

Allen Key 8

Insert Key 9

Bush

N/A

2306

MS101

2243

DIT6

M3x10 MOD

2.0 A/F

T6

N/A

3306

MS104

3243

P2205

M3x10 MOD

2.5 A/F

T7

5754

5306

MS107

5243

P2506

M4x12 MOD

4.0 A/F

T7

7758

7306

MS110

7243

P3511

M5x16 MOD

6.0 A/F

T15

Microbore 'CM' Style Bush & Unit - Diagram 1

Microbore Bush & Unit

ØD min

ØDc

S

R

T

Insert

26.0

24.0

8.7

1.8

0.3

EPMT040204

30.0

28.0

11.1

3.2

0.2

CCMT060204

40.0

38.0

16.0

5.6

1.2

CCMT060204

60.0

58.0

25.4

7.9

-1.6

CCMT09T304

NOTE: ØD is the minimum bore size using a bar specially designed for the purpose.
‘T’ dimn. is to insert sharp corner, a minus sign denotes insert is behind unit centreline.

Spare Parts included as Bush and Unit

Dial
Spring Washer
Bush

Unit 1

Dial 2

Washer 3

Lock Screw 4

Spring Washer 5

Insert Screw 6

Bush Screw 7

Allen Key 8

Insert Key 9

Bush

2254

2306

MS101

2243

F2004T

M3x10 MOD

2.0 A/F

T6

3754

3306

MS104

3243

CO2505

M3x10 MOD

2.5 A/F

T7

5754

5306

MS107

5243

CO2506

M4x12 MOD

4.0 A/F

T7

7758

7306

MS110

7243

CO4008

M5x16 MOD

6.0 A/F

T15

 

CM Style Adaptor Bushes - Square Mounted, Spring Loaded, Triangular Indexable Insert - Diagram

Microbore Bush & Unit

ØD min

ØDc

S

R

T

Insert

25.0

22.0

9.7

2.5

2.0

TCMT06T104

35.0

30.0

12.3

4.0

3.0

TCMT090204

45.0

43.0

16.0

7.1

5.4

TCMT110204

65.0

63.0

25.4

10.3

6.4

TCMT16T304

NOTE: ØD is the minimum bore size using a bar specially designed for the purpose.

Spare Parts Included as Bush and Unit

Dial
Spring Washer
Bush

Unit 1

Dial 2

Washer 3

Lock Screw 4

Spring Washer 5

Insert Screw 6

Bush Screw 7

Allen Key 8

Insert Key 9

Bush

N/A

2306

MS101

2243

DIT6

M3x10 MOD

2.0 A/F

T6

N/A

3306

MS104

3243

P2205

M3x10 MOD

2.5 A/F

T7

5755

5306

MS107

5243

P2506

M4x12 MOD

4.0 A/F

T8

7760

7306

MS110

7243

P3511

M5x16 MOD

6.0 A/F

T15

CM Style Adaptor Bushes - Square Mounted, Spring Loaded, Rhomboid Indexable Insert - Diagram

Microbore Bush & Unit

ØD min

ØDc

S

R

T

Insert

25.0

22.0

8.7

2.4

3.0

EPMT040204

35.0

30.0

11.1

4.0

4.0

CCMT060204

45.0

43.0

16.0

7.1

5.4

CCMT060204

65.0

63.0

25.4

10.3

6.4

CCMT09T304

NOTE: ØD is the minimum bore size using a bar specially designed for the purpose.

Spare Parts included as Bush and Unit

Dial
Spring Washer
Bush

Unit 1

Dial 2

Washer 3

Lock Screw 4

Spring Washer 5

Insert Screw 6

Bush Screw 7

Allen Key 8

Insert Key 9

Bush

2255

2306

MS101

2243

F2004T

M3x10 MOD

2.0 A/F

T6

3755

3306

MS104

3243

CO2505

M3x10 MOD

2.5 A/F

T7

5755

5306

MS107

5243

CO2506

M4x12 MOD

4.0 A/F

T7

7760

7306

MS110

7243

CO4008

M5x16 MOD

6.0 A/F

T15

SFB Style Gear Adjust Adaptor Bush Installation Information - Diagram

Installation Dimensions

Microbore GA Bush

ØA Min

ØB ±0.10

ØC H7

ØD +0.5

ØE Min

F ±0.10

G Min

H ±0.05

J

K

L ±0.10

M ±0.05

ØN 45°

ØP C/BORE

Q

R Min

S ±0.10

T ±0.10

U

27.0

23.1

11.0

10.5

8.0

11.5

9.0

4.5

12.0

7.8

5.4

4.5

6.0

3.2

M3

9.0

8.5

11.5

2.5

33.0

28.1

14.0

12.5

11.0

13.0

12.0

5.5

14.5

9.2

6.3

5.5

8.0

4.2

M4

10.0

10.0

14.0

3.5

49.0

42.1

20.0

18.5

16.0

20.0

15.0

7.5

21.5

13.7

10.2

7.5

11.0

5.5

M5

12.0

15.0

21.0

3.5

62.0

54.1

30.0

18.5

24.0

20.5

20.5

8.5

27.5

19.1

10.2

8.5

12.0

6.4

M6

15.0

20.7

27.0

5.0

SFB Style Gear Adjust Bushes - Diagram

Microbore GA Bush

ØD min

S

R

T

F

Microbore GA Unit

Insert

29.0

7.7

2.3

7.6

11.5

TC_ _0602_ _

34..0

8.3

2.8

9.4

13.0

TC_ _0602_ _

51.0

13.8

3.8

15.0

20.0

M052BS095TC-100GA

TC_ _1102_ _

70.0

22.5

9.8

19.8

20.5

TC_ _1102_ _

NOTE: ØD is the minimum bore size using a bar specially designed for the purpose.

MICROBORE GA BUSHES ARE NOT SUPPLIED WITH GA UNITS. REFER TO MICROBORE UNIT RANGE FOR MORE STYLES OF UNIT AVAILABLE.

G.A. Bush Spares

G.A. Spares

SOLD COMPLETE

SOLD SEPARATELY

SOLD ONLY AS A SET

GA BUSH - Diagram
BUSH SCREW - Diagram
GA WRENCH - Diagram
WORM - Diagram
SPACER - DIagram
SNAP RING - Diagram

G.A. Bush 1

Bush Screw 2

G.A. Wrench 3

Worm 4

Spacer 5

Snap Ring 6

MS103

2842

NR2821 SPARES SET

MS106

2842

NR3821 SPARES SET

MS112

5842

NR5821 SPARES SET

MS109

5842

NR7821 SPARES SET

MICROBORE STRONGLY ADVISE THAT ANY RECONDITIONING WORK ON GEAR ADJUST BUSHES IS CARRIED OUT BY FACTORY TRAINED TECHNICIANS