NEMA Flange-Mounting Type D Footless Motors

Electric Motors, Generators and Drives

The following are dimensional size charts for standard electric motor NEMA standard Type D Flange Footless Motors

Standardized motor dimensions are established by the National Electrical Manufacturers Association (NEMA) - are tabulated below and apply to all base-mounted motors listed herein that carry a NEMA frame designation

Type D Flange Mounting Foot or Footless Motors
Letter Symbols for Type D Flange Mounting Foot or Footless Motors

Dimensions for Type D Flange-Mounting Footless Motors

Frame
Designation

AJ

AK

BA

BB*

BC

BD
Max

BE
No

Num.

Bolt
Size

Rec.
Bolt
Length

U

AH

Keyseat

AA
Min†

R

ES
Min

S

143TD
145TD

10.00

9.000

2.75

.250

0.00

11.00

0.50

4

0.53

1.25

0.8750

2.25

0.771

411.

80.18

/43

182TD
184TD

10.00

9.000

3.50

0.25

0.00

11.00

0.50

4

0.53

1.25

1.1250

2.75

0.986

1.78

0.250

3/4

213TD
215TD

10.00

9.000

4.25

0.25

0.00

11.00

0.50

4

0.53

1.25

1.3750

3.38

1.201

2.41

0.312

1

254TD
256TD

12.50

11.000

4.75

0.25

0.00

14.00

0.75

4

0.81

2.00

1.625

4.00

1.416

2.91

0.375

1-1/4

284TD
286TD

12.50

11.000

4.75

0.25

0.00

14.00

0.75

4

0.81

2.00

1.875

4.62

1.591

3.28

0.500

1-1/2

284TSD
286TSD

12.50

11.000

4.75

0.25

0.00

14.00

0.75

4

0.81

2.00

1.625

3.25

1.416

1.91

0.375

1-1/2

324TD
326TD

16.00

14.000

5.25

0.25

0.00

18.00

0.75

4

0.81

2.00

2.125

5.25

1.845

3.91

0.500

2

324TSD
326TSD

16.00

14.000

5.25

0.25

0.00

18.00

0.75

4

0.81

2.00

1.875

3.75

1.591

2.03

0.500

2

364TD
365TD

16.00

14.000

5.88

0.25

0.00

18.00

0.75

4

0.81

2.00

2.375

5.88

2.021

4.28

0.625

3

364TSD
365TSD

16.00

14.000

5.88

0.25

0.00

18.00

0.75

4

0.81

2.00

1.875

3.75

1.591

2.03

0.500

3

404TD
405TD

20.00

18.000

6.62

0.25

0.00

22.00

1.00

8

0.81

2.25

2.875

7.25

2.450

5.65

0.750

3

404TSD
405TSD

20.00

18.000

6.62

0.25

0.00

22.00

1.00

8

0.81

2.25

2.125

4.25

1.845

2.78

0.500

3

444TD
445TD

20.00

18.000

7.50

0.25

0.00

22.00

1.00

8

0.81

2.25

3.375

8.50

2.880

6.91

0.875

3

444TSD
445TSD

20.00

18.000

7.50

0.25

0.00

22.00

1.00

8

0.81

2.25

2.375

4.75

2.021

3.03

0.625

3

447TD
449TD

20.00

18.000

7.50

0.25

0.00

22.00

1.00

8

0.81

2.25

3.375

8.50

2.880

6.91

0.875

3

447TSD
449TSD

20.000

18.000

7.50

0.25

0.00

22.00

1.00

8

0.81

2.25

2.375

4.75

2.021

3.03

0.625

3

500

22.000

18.000

...

0.25

0.00

25.00

1.00

8

0.81

...

...

...

...

...

...

...

All dimensions in inches.
*Tolerance is +0.00 inch, -0.06 inch.
† For dimensions of clearance holes see 4.8.

Contribute Article
Spider Optimizer

© Copyright 2000 - 2017, by Engineers Edge, LLC www.engineersedge.com
All rights reserved
Disclaimer | Feedback | Advertising | Contact


User Reviews/Comments:

There are currently no comments available.


Add a Comment (you must be logged in to post comment Register):
Name:
Email: (Optional)
Comment: