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Brazed Tipped Units

 
BRAZED CARTRIDGES AND UNITS
 
CARTRIDGE IDENTIFICATION CODE
(Found just below threads)
 
    ‘M’ Indicates                    Cartridge Length             Grade of
Metric omit for imp.            A-long B-short                 carbide
    |                      |                      |
M
 
5
 
A
 
2
 
F
-
40
 
 
                          |                               |                                    |
             
            Size of                              Style of                   Denotes Unit (Graduations
                          Cartridge                         tool shape                 on dial) omit for cartridge
 

Microbore cartridges are stamped with a combination of letters and figures which identify the size and length of the cartridge, tool style and grade of carbide.
 
For Left Hand Cartridge/Units, place ‘LH’ in front of the part number.
 
Cartridges with 15º lead angle are indicated by adding the letter “L” to the tool shape figure 
(ie. M5A2L-F)
 
Cartridges with 12º top rake are indicated by adding the figure 12 to the tool shape figure. 
(ie M5A212F)
 


STANDARD BRAZED CARTRIDGE TOOL SHAPES


Standard Microbore cartridges in a wide range of sizes are available in the comprehensive range of tool shapes. The microbore cartridges come with zero top rake; however cartridges having 12º top rake are available for machining aluminium and other light alloys.  Microbore cartridges having non-standard dimensions, carbide grades, and tool point radius, are designed and manufactured to suit customer requirements.
 

BRAZED CARTRIDGES TECHNICAL INFORMATION
(INCLUDING SPARE PART BREAKDOWN)

STYLE 2 

Microbore Unit
Carbide Grades
            Dimensions in mm
L
M
R
S
T
H
E
M1A2**-40
E, 12E, F & 12F
14.3
16.0
3.2
6.4
0.4
0.8
2.0
M1B2**-40
11.5
13.3
1.2
6.4
0.4
0.8
2.0
 
 
 
 
 
 
 
 
 
M2A2**-40
E, 12E, F & 12F
19.8
21.0
4.4
8.7
0.4
1.2
2.8
M2B2**-40
16.7
18.7
2.0
8.7
0.4
1.2
2.8
 
 
 
 
 
 
 
 
 
M3A2**-40
E, 12E, F & 12F
25.4
26.2
6.4
11.1
0.8
1.6
3.2
M3B2**-40
21.4
23.0
3.2
11.1
0.8
1.6
3.2
 
 
 
 
 
 
 
 
 
M5A2**-40
E, 12E, F & 12F
39.7
41.3
10.3
16.0
1.2
2.4
6.4
M5B2**-40
33.3
35.7
5.6
16.0
1.2
2.4
6.4
 
 
 
 
 
 
 
 
 
M7A2**-80
E, 12E, F & 12F
55.6
58.7
12.7
25.4
-1.6
3.2
15.1
M7B2**-80
49.2
53.2
7.9
25.4
-1.6
3.2
15.1
 
 
 
 
 
 
 
 
 
M10A2**-80
E, 12E, F & 12F
76.2
78.6
22.2
31.8
-0.8
4.8
19.1
M10B2**-80
63.5
68.3
12.7
31.8
-0.8
4.8
19.1

STYLE 3


Microbore Unit
Carbide Grades
Dimensions in mm
L
M
R
S
T
H
E
M1A3**-40
E, 12E, F & 12F
15.1
17.5
3.2
7.1
0.8
0.8
3.6
M1B3**-40
12.3
14.9
1.2
7.1
0.8
0.8
3.6
 
 
 
 
 
 
 
 
 
M2A3**-40
E, 12E, F & 12F
21.4
23.0
4.4
10.3
1.2
1.2
5.6
M2B3**-40
18.3
20.6
2.0
10.3
1.2
1.2
5.6
 
 
 
 
 
 
 
 
 
M3A3**-40
E, 12E, F & 12F
27.0
29.4
6.4
12.7
1.6
1.6
7.5
M3B3**-40
23.0
26.2
3.2
12.7
1.6
1.6
7.5
 
 
 
 
 
 
 
 
 
M5A3**-40
E, 12E, F & 12F
42.9
46.0
10.3
19.1
2.4
2.4
11.9
M5B3**-40
36.5
40.5
5.6
19.1
2.4
2.4
11.9
 
 
 
 
 
 
 
 
 
M7A3**-80
E, 12E, F & 12F
58.7
62.7
12.7
28.6
4.8
3.2
19.8
M7B3**-80
52.4
57.9
7.9
28.6
4.8
3.2
19.8
 
 
 
 
 
 
 
 
 
M10A3**-80
E, 12E, F & 12F
82.6
86.5
22.2
38.1
6.4
4.8
27.8
M10B3**-80
69.9
76.2
12.7
38.1
6.4
4.8
27.8

STYLE 5


Microbore Unit
Carbide Grades
Dimensions in mm
L
M
R
S
T
H
E
M1A5**-50
E, 12E, F & 12F
14.3
18.3
4.0
6.4
1.6
0.8
3.2
M1B5**-50
11.5
15.1
1.6
6.4
1.6
0.8
3.2
 
 
 
 
 
 
 
 
 
M2A5**-50
E, 12E, F & 12F
19.8
24.2
5.6
8.7
2.0
1.2
4.0
M2B5**-50
16.7
21.0
2.4
8.7
2.0
1.2
4.0
 
 
 
 
 
 
 
 
 
M3A5**-50
E, 12E, F & 12F
25.4
31.0
7.9
11.1
2.4
1.6
5.6
M3B5**-50
21.4
27.0
4.0
11.1
2.4
1.6
5.6
 
 
 
 
 
 
 
 
 
M5A5**-50
E, 12E, F & 12F
39.7
48.4
13.5
16.0
4.0
2.4
9.1
M5B5**-50
33.3
42.1
7.1
16.0
4.0
2.4
9.1
 
 
 
 
 
 
 
 
 
M7A5**-100
E, 12E, F & 12F
55.6
66.7
16.7
25.4
6.4
3.2
15.9
M7B5**-100
49.2
60.3
10.3
25.4
6.4
3.2
15.9
 
 
 
 
 
 
 
 
 
M10A5**-100
E, 12E, F & 12F
76.2
88.9
28.6
31.8
9.5
4.8
19.1
M10B5**-100
63.5
76.2
15.9
31.8
9.5
4.8
19.1



PRINTABLE INFO 

GRADES OF CARBIDE AVAILABLE
 
K05-K20
F
Cast Iron, Non-Ferrous materials.
12F
To suit Aluminium & Magnesium alloys
P05-P20
E
Fine Boring Steel
12E
General Machining of Steels at Medium Speeds.
 
Other grades and top rakes are available on request.
 SPARE PART IDENTIFICATION
Microbore units are supplied as standard with a cartridge, dial, washer, lock screw and a pair of top
adjustment springs.



SPARE PARTS LIST
(Metric)
 
 
DIAL
LOCKSCREW
ADAPTER
BUSH
SCREW
CONE
WASHER
TOP ADJ.
SPRING
 
DIAL WRENCH
UNIT
SIZE
 
ANGLE
SQUARE
A
 LENGTH
B
LENGTH
1
PART NO.
1204
1205
MS101
MS100
N/A
N/A
N/A
1330A
2
PART NO.
2254
2255
MS102
MS101
MS103
2306
2243
2330A
3
PART NO.
3754
3755
MS105
MS104
MS106
3306
3243
5
PART NO.
5754
5755
MS108
MS107
MS109
5306
5243
5330A
7
PART NO.
7758
7760
MS111
MS110
MS113
7306
7243
10
PART NO.
10758
10760
MS115
MS114
MS116
10306
10243
10330A

PLEASE NOTE: Also available in Imperial (Inch System)
 
 
MICROBORE TOOLING SYSTEMS LTD
WHITACRE ROAD IND ESTATE
WHITACRE ROAD
NUNEATON
WARKS
CV11 6BX
ENGLAND
TEL: 0044 (0) 24 7637 3355
FAX: 0044 (0) 24 7637 3322
 
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