231
Information
NEMA
KEYWAY
NEMA
KEYWAY
SHAFT DIMENSIONS SHAFT DIMENSIONS
(U)
(R)
(S)
(U)
(R)
(S)
3/8
21/64
FLAT
1-7/8 1-19/32
1/2
1/2
29/64
FLAT
2-1/8 1-27/32
1/2
5/8
33/64
3/16
2-3/8 2-1/64
5/8
7/8
49/64
3/16
2-1/2 2-3/16
5/8
1-1/8
63/64
1/4
2-7/8 2-29/64
3/4
1-3/8 1-13/64 5/16
3-3/8
2-7/8
7/8
1-5/8 1-13/32
3/8
3-7/8 3-5/16
1
DIMENSIONS
.%-! #!34 )2/. &2!-% s
3%2)%3
*
213-5TC NEMA C face BA dimension is 4
1
⁄
4
”.
**
326TC and smaller have 4 mounting holes in NEMA C face, 364TC and larger have 8 mounting holes.
S
Blue shading denotes dimensions established by NEMA standard MG1, others are unique to LEESON, and will vary with each manufacturer.
NEMA SHAFT AND
KEYWAY DIMENSIONS
N
V
iî
N
S is keyway width.
U minus R is keyway depth.
LEESON
2)')$ -/5.4
3%2)%3
# &!#%
3%2)%3
Frame
B
D
E
2F
H
N
O
P
U
N-W
AA
AB
AH
AJ
AK
BA
BB
BD
T
TEFC
T
TAP
KEY
Size
S
TEFC ODP
ODP
V
TS
**
143T
—
—
3
1
/
2
2
3
/
4
4
11
/
32
1
/
8
3
/
16
145T
5
2
3
/
8
7
1
/
8
—
7
/
8
2
1
/
4
—
6
2
1
/
8
5
7
/
8
4
1
/
2
2
3
/
4
—
—
2
1
/
4
3
/
8
-16
182T
7
1
/
4
6
7
/
8
4
1
/
2
3
3
/
4
4
1
/
2
13
/
32
1
/
4
1
9
/
16
1
/
4
184T
5
1
/
2
2
7
/
8
8
3
/
4
8
15
/
32
1
1
/
8
2
3
/
4
3
/
4
6
3
/
8
2
5
/
8
7
1
/
4
8
1
/
2
*2
3
/
4
8
7
/
8
1
3
/
4
2
1
/
2
1
/
2
-13
213T
7
1
/
2
7
1
/
2
5
1
/
4
4
1
/
4
5
1
/
2
13
/
32
—
10
11
/
16
10
13
/
16
1
3
/
8
3
3
/
8
1
8
5
/
16
3
1
/
8
7
1
/
4
8
1
/
2
*3
1
/
2
1
/
4
9
1
15
/
16
3
1
/
8
1
/
2
-13
5
/
16
215T
9
9
7
2
254T
10
3
/
8
10
3
/
8
6
1
/
4
5
8
1
/
2
17
/
32
—
12
15
/
16
13
1
/
4
1
5
/
8
4
1
1
/
4
11
5
/
8
3
3
/
4
7
1
/
4
8
1
/
2
*4
1
/
4
1
/
4
9
5
/
8
2
19
/
32
3
3
/
4
1
/
2
-13
3
/
8
256T
12
1
/
8
12
1
/
8
10
2
11
/
16
284TS
11
3
/
4
11
3
/
4
9
1
/
2
1
5
/
8
3
1
/
4
3
2
19
/
32
4
3
/
8
3
/
8
284T
7
5
1
/
2
17
/
32
—
14
1
/
2
14
3
/
4
1
7
/
8
4
5
/
8
1
1
/
2
11
3
/
4
4
3
/
8
9
10
1
/
2
4
3
/
4
1
/
4
11
1
/
2
-13
1
/
2
286TS
13
1
/
4
13
1
/
4
11
1
5
/
8
3
1
/
4
3
3
1
/
8
3
3
/
8
286T
1
7
/
8
4
5
/
8
4
3
/
8
1
/
2
324TS
12
7
/
8
13
3
/
8
10
1
/
2
1
7
/
8
3
3
/
4
3
1
/
2
2
3
/
4
5
324T
8
6
1
/
4
21
/
32
—
15
3
/
4
15
3
/
4
2
1
/
8
5
1
/
4
2
13
1
/
2
5
11
12
1
/
2
5
1
/
4
1
/
4
13
3
/
8
5
/
8
-11
1
/
2
326TS
14
3
/
8
14
7
/
8
12
1
7
/
8
3
3
/
4
3
1
/
2
2
3
/
16
3
1
/
2
326T
2
1
/
8
5
1
/
4
5
364TS
13
3
/
8
14
7
/
16
11
1
/
4
1
7
/
8
3
3
/
4
3
1
/
2
2
1
/
2
5
5
/
8
1
/
2
364T
9
7
21
/
32
—
17
13
/
16
16
2
3
/
8
5
7
/
8
3
15
7
/
16
5
5
/
8
11
12
1
/
2
5
7
/
8
1
/
4
14
5
/
8
-11
5
/
8
365TS
14
3
/
8
15
7
/
16
12
1
/
4
1
7
/
8
3
3
/
4
3
1
/
2
2
13
/
16
3
1
/
2
1
/
2
365T
2
3
/
8
5
7
/
8
5
5
/
8
5
/
8
404TS
15
15
/
16
15
15
/
16
12
1
/
4
2
1
/
8
4
1
/
4
4
2
25
/
32
7
1
/
2
404T
10
8
13
/
16
—
19
5
/
16
19
1
/
8
2
7
/
8
7
1
/
4
3
16
5
/
16
7
11
12
1
/
2
6
5
/
8
1
/
4
15
1
/
2
5
/
8
-11
3
/
4
405TS
17
7
/
16
17
7
/
16
13
3
/
4
2
1
/
8
4
1
/
4
4
3
1
/
8
4
1
/
2
405T
2
7
/
8
7
1
/
4
7
3
/
4
444T
18
11
/
16
20
5
/
8
14
1
/
2
3
3
/
8
8
1
/
2
3
8
1
/
4
7
/
8
444TS
11
9
13
/
16
—
22
1
/
4
22
2
3
/
8
4
3
/
4
3
21
11
/
16
8
1
/
4
14
16
7
1
/
2
1
/
4
18
5
/
8
-11
5
/
8
445T
20
5
/
8
20
5
/
8
16
1
/
2
3
3
/
8
8
1
/
2
3
3
/
4
4
1
/
2
7
/
8
445TS
7
/
8
447T
24
3
/
16
29
1
/
8
11
9
20
13
/
16
—
24
1
/
4
26
1
/
2
3
3
/
8
8
1
/
2
3
25
15
/
16
8
1
/
4
14
16
7
1
/
2
1
/
4
18
3
3
/
16
8
1
/
4
5
/
8
-11
7
/
8
449T
25
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