NEMA Frame
LA
LB
LC
LE
LZ
Input
Bore
Keyway
56C
5.875
4.50
6.50
0.16
0.43
0.625
3/16¡Á3/32
143TC/145TC
5.875
4.50
6.50
0.16
0.43
0.875
3/16¡Á3/32
182TC/184TC
7.250
8.50
9.00
0.23
0.55
1.125
1/4¡Á1/8
213TC/215TC
7.250
8.50
9.00
0.23
0.55
1.375
5/16¡Á5/32
254TC/256TC
7.250
8.50
10.00
0.23
0.55
1.625
3/8¡Á3/16

Size

Radio

A

A1

AB

AC

B

BB

BD

40

5£º1
10£º1
15£º1
20£º1
30£º1
40£º1
50£º1
60£º1

2.58

3.92

3.94

1.85

3.31

2.68

50

2.85

  

4.19

4.48

2.08

3.82

2.72

60

3.15

  

4.43

5.00

2.20

4.33

2.99

63

3.37

  

4.67

5.51

2.36

4.45

3.46

70

3.76

  

4.63

6.10

2.52

5.12

3.31

80

4.11

  

5.84

6.69

2.85

5.51

3.94

100

4.78

  

6.51

8.03

3.33

6.42

4.49

120

6.10

8.26

7.48

10.24

3.94

7.28

5.04

135

6.89

9.06

8.32

11.65

4.33

8.27

5.91

155

7.64

10.24

9.35

12.99

5.20

9.92

6.69

175

8.78

11.42

11.02

14.57

5.71

10.31

7.32

Size
BE
BF
CC
H
HL
LL
Z
L
40
2.13
3.15
1.575
5.00
1.34
2.09
5/16-18
0.63
50
1.97
3.54
1.969
5.91
1.38
2.56
5/16-18
0.63
60
2.13
3.94
2.362
6.97
1.65
2.95
3/8-16
0.75
63
2.69
4.87
2.480
7.32
1.89
2.95
3/8-16
0.75
70
2.56
4.92
2.756
8.46
2.16
3.54
3/8-16
0.75
80
2.76
5.51
3.150
9.84
2.56
4.13
3/8-16
0.75
100
3.54
7.09
3.937
12.20
3.15
5.12
1/2-13
0.94
120
3.94
8.66
4.724
14.57
3.74
6.10
1/2-13
0.94
135
4.33
10.24
5.315
16.73
4.13
7.28
5/8-11
1.13
155
4.72
11.02
6.102
18.15
4.05
7.99
5/8-11
1.13
175
5.51
12.60
6.890
20.51
4.84
8.78
3/4-10
1.38

Size
Output Shaft
With Horizontal Base
NEMA Frame
S
LS
W¡ÁY
E
F
M
N
G
X
40
0.625
1.38
3/16¡Á3/32
3.54
3.94
4.33
4.92
0.51
0.39
56C
50
0.750
1.57
3/16¡Á3/32
3.74
4.33
4.72
5.51
0.59
0.43
56C¡¢140TC
60
1.000
1.97
1/4¡Á1/8
4.13
4.72
5.12
5.91
0.71
0.43
56C¡¢140TC
63
1.000
1.97
1/4¡Á1/8
4.33
5.91
5.51
7.09
0.71
0.43
56C¡¢140TC
70
1.125
2.36
1/4¡Á1/8
4.53
5.91
5.91
7.48
0.71
0.59
56C¡¢140TC
80
1.375
2.56
5/16 5/32
5.31
7.09
6.69
8.66
0.71
0.59
56C¡¢140TC¡¢180TC
100
1.500
2.95
3/8¡Á3/16
6.10
8.66
7.48
10.63
0.79
0.59
56C¡¢140TC¡¢180TC
120
1.750
3.35
3/8¡Á3/16
7.09
10.24
9.06
12.60
0.98
0.71
180TC¡¢210TC
135
2.250
3.74
1/2¡Á1/4
7.87
11.42
9.84
13.78
1.18
0.71
180TC¡¢210TC
155
2.500
4.33
5/8¡Á5/16
8.66
12.60
11.02
14.96
1.26
0.79
180TC¡¢210TC
175
2.750
4.33
5/8 5/16
9.84
13.78
12.20
16.14
1.46
0.79
180TC¡¢210TC¡¢250TC