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MORSE TAPER GAUGES :

Nomenclature

The Morse Taper (MT) Gauges are also known as Self-holding Tapers.

Description & Features:

The Our Morse Taper Gauges ( MT Gauges ) are made of superior quality high chrome alloy steel hardened to 58-60 HRC, to provide a high degree of wear resistance. The MT Gauges are fine lapped to get maximum seating and surface finish. The MT Gauges are rough ground and kept for a long period of time before finishing is given; this is done to prevent any distortions and ensure stability throughout their use.


TABLE 1 DIMENSION OF TAPER PLUG GAUGES, PLAIN

Designation of Taper
d js5
d2
1
I Js8
I3
I4
Z #0.05
∝/2
AT µm
MT  0
9.045
9
116
50
53
3
1.0
1’ 29’27
+4.0
MT  1
12.065
11
128
53.5
63
3.5
1.0
1’ 25’43
+4.3
MT  2
17.750
13.5
148
64
70
5
1.0
1’ 25’50
+4.0
MT  3
23.825
17.5
176
81
80
5
1.0
1’ 26’16
+5.1
MT  4
31.267
25
210
102.5
90
6.5
1.5
1’ 29’15
+5.1
MT  5
44.399
34
250
129.5
100
6.5
1.5
1’ 30’26
+6.5
MT  6
63.348
34
316
182
110
8
2.0
1’ 29’36
+7.3
ME  4
4
7
80
23
48
2
0.5
1’ 25’56
+2.9
ME  6
6
7
90
32
48
3
0.5
1’ 25’56
+3.2
ME  80
80
34
330
196
110
8
2.0
1’ 25’56
+7.8
ME  100
100
34
370
232
110
10
2.0
1’ 25’56
+9.3
ME  120
120
40
410
268
110
12
2.0
1’ 25’56
+8.4
ME  160
160
40
560
340
110
16
3.0
1’ 25’56
+10.9
ME  200
200
40
630
412
110
20
3.0
1’ 25’56
+10.3
Note: Cone angle tolerance ( AT) is At4 grade over length
I2 as per IS : 7615- 1975 ‘System of cone tolerance”.



TABLE 2 DIMENSION OF TAPER PLUG GAUGES, TANGED

Designation of Taper
d js5
d h 11
d2
1
I Js8
I3
I4
Z>#0.05
a/2
AT>µm
MT  0
9.045
6
9
116
50
53
3
1.0
1’ 29’27
+4.0
MT  1
12.065
8.7
11
128
53.5
63
3.5
1.0
1’ 25’43
+4.3
MT  2
17.750
13.5
13.5
148
64
70
5
1.0
1’ 25’50
+4.0
MT  3
23.825
18.5
17.5
176
81
80
5
1.0
1’ 26’16
+5.1
MT  4
31.267
24.5
25
210
102.5
90
6.5
1.5
1’ 29’15
+5.1
MT  5
44.399
36
34
250
129.5
100
6.5
1.5
1’ 30’26
+6.5
MT  6
63.348
51
34
316
182
110
8
2.0
1’ 29’36
+7.3
ME  80
80
67
34
330
196
110
8
2.0
1’ 25’56
+7.8
ME 100
100
85
34
370
232
110
10
2.0
1’ 25’56
+9.3
ME 120
120
102
40
410
268
110
12
2.0
1’ 25’56
+8.4
ME 160
160
138
40
560
340
110
16
3.0
1’ 25’56
+10.9
ME 200
200
174
40
630
412
110
20
3.0
1’ 25’56
+10.3

TABLE 1 DIMENSION OF TAPER PLUG GAUGES, PLAIN

Designation of Taper
d js5
d2
d3
I k8
2
c
a/2
AT µm
MT  0
9.045
20
50
2
1’ 29’27
+4.0
MT  1
12.065
28
53.5
2
1’ 25’43
+4.3
MT  2
17.750
38
64
2.5
1’ 25’50
+4.0
MT  3
23.825
46
81
2.5
1’ 26’16
+5.1
MT  4
31.267
55
102.5
2.5
1’ 29’15
+5.1
MT  5
44.399
72
129.5
2.5
1’ 30’26
+6.5
MT  6
63.348
95
182
3
1’ 29’36
+7.3
ME  4
4
12
23
0.8
1’ 25’56
+2.9
ME  6
6
16
32
1’ 25’56
+3.2
ME  80
80
115
120
196
40
2.5
1’ 25’56
+7.8
ME  100
100
144
150
232
65
2.5
1’ 25’56
+9.3
ME  120
120
172
180
268
80
2.5
1’ 25’56
+8.4
ME  160
160
230
240
340
100
3
1’ 25’56
+10.9
ME  200
200
280
290
412
100
3
1’ 25’56
+10.3

  TABLE 1 DIMENSION OF TAPER PLUG GAUGES, PLAIN

Designation of Taper
d js5
d2 H11
d3
Dia d4
I H11
I2
I H8
c
B K6
a/2
AT µm
MT  0
9.045
6.7
9
18
56.5
6.5
46.0
1
2.01
1’ 29’27
-3.7
MT  1
12.065
9.7
11
26
62
8.5
48.5
1
2.66
1’ 25’43
-3.9
MT  2
17.750
14.9
13.5
35
75
10.0
59
1.6
3.21
1’ 25’50
-4.7
MT  3
23.825
20.2
17.5
43
94
13
74
1.6
4.01
1’ 26’16
-4.7
MT  4
31.267
26.5
25
52
117.5
16
93.5
2
6.01
1’ 29’15
-5.9
MT  5
44.399
38.2
34
68
149.5
19
120.5
2
8.01
1’ 30’26
-6.0
MT  6
63.348
54.8
34
90
210
27
170
2.5
9.56
1’ 29’36
-6.8
ME  80
80
71.5
34
115
220
24
172
2.5
13.03
1’ 25’56
-6.9
ME  100
100
90
34
144
260
28
202
2.5
16.06
1’ 25’56
-8.1
ME  120
120
108.5
40
172
300
32
232
2.5
19.06
1’ 25’56
-9.3
ME  160
160
145.5
40
240
380
40
292
3.0
25.06
1’ 25’56
-9.3
ME  200
200
182.5
40
380
460
48
352
3.0
31.06
1’ 25’56
-11.3

Care in Use

All MT Gauges must be stored carefully in a dust-free environment and protected with periodic application of rust preventives. Before and after use, the Gauges must be cleaned with a smooth cloth or chamois leather.