Standard Motor Catalog

Section TR Technical Reference Guide

ANNEXURE A Table 48: Quick Comparison Between NEMA and IEC Mounting Dimensions

Dimensions in reference above sketch stand for NEMA (IEC)

Frame Size

D (H)

2E (A)

2F (B)

BA (C)

H (K)

N-W (E)

ØU (ØD)

IEC NEMA IEC NEMA IEC NEMA IEC NEMA IEC NEMA IEC NEMA IEC NEMA

mm (inch) mm

mm (inch) mm

mm (inch) mm

mm (inch) mm

mm (inch) mm

mm (inch) mm

mm (inch) 22.225 (0.875) 22.225 (0.875) 28.575 (1.125) 28.575 (1.125) 34.925 (1.375) 34.925 (1.375) 41.275 (1.625) 41.275 (1.625) 47.625 (1.875) 47.625 (1.875) 53.975 (2.125) 53.975 (2.125) 60.325 (2.375) 60.325 (2.375) 73.025 (2.875) 73.025 (2.875) 85.725 (3.375) 85.725 (3.375)

IEC NEMA

mm

88.9 (3.5) 88.9 (3.5) 114.3 (4.5) 114.3 (4.5) 133.4 (5.25) 133.4 (5.25) 158.8 (6.25) 158.8 (6.25) 177.8 (7) 177.8 (7) 203.2 (8) 203.2 (8) 228.6 (9) 228.6 (9)

139.7 (5.5) 139.7 (5.5) 190.5 (7.5) 190.5 (7.5) 215.9 (8.5) 215.9 (8.5) 279.4 (11) 279.4 (11) 317.5 (12.5) 317.5 (12.5) 355.6 (14) 355.6 (14) 406.4 (16) 406.4 (16) 457.2 (18) 457.2 (18) 254 (10) 254 (10)

101.6 (4)

57.2 (2.25) 57.2 (2.25) 69.9 (2.75) 69.9 (2.75)

8.6 (0.34) 8.6 (0.34) 10.4 (0.41) 10.4 (0.41) 10.4 (0.41) 10.4 (0.41) 13.5 (0.53) 13.5 (0.53) 13.5 (0.53) 13.5 (0.53) 16.8 (0.66) 16.8 (0.66) 16.8 (0.66) 16.8 (0.66) 20.6 (0.81) 20.6 (0.81) 20.6 (0.81) 20.6 (0.81)

57.15 (2.25) 57.15 (2.25) 69.85 (2.75) 69.85 (2.75) 82.852 (3.38) 82.852 (3.38) 117.348 (4.62) 117.348 (4.62) 133.35 (5.25) 133.35 (5.25) 149.352 (5.88) 149.352 (5.88) 184.15 (7.25) 184.15 (7.25) 101.6 (4) 101.6 (4)

90S 143 90

140

100

56

10

50

24

127 (5)

56

10

50

24

90L 145 90

140

125

114.3 (4.5) 139.7 (5.5) 139.7 (5.5) 177.8 (7) 209.6 (8.25)

112S 182 112

190

114

70

12

60

28

112M 184 112

190

140

70

12

60

28

88.9 (3.5) 88.9 (3.5)

132S 213 132

216

140

89

12

80

38

132M 215 132

216

178

89

12

80

38

108 (4.25) 108 (4.25) 120.6 (4.75) 120.6 (4.75) 133.4 (5.25) 133.4 (5.25) 149.4 (5.88) 149.4 (5.88) 168.1 (6.62) 168.1 (6.62) 190.5 (7.5) 190.5 (7.5) 215.9 (8.5) 215.9 (8.5)

42

160M 254 160

254

210

108

14.5

110

254 (10)

160L 256 160

254

254

108

14.5

110

42

241.3 (9.5) 279.4 (11) 266.7 (10.5) 304.8 (12) 285.6 (11.25) 311.2 (12.25) 311.2 (12.25) 349.2 (13.75)

180M 284 180

279

241

121

14.5

110

48

180L 286 180

279

279

121

14.5

110

48

TECHNICAL REFERENCE GUIDE

200M 324 200

318

267

133

18.5

110

55

200L 326 200

318

305

133

18.5

110

55

225S 364 225

356

286

149

18.5

140

60

225M 365 225

356

311

149

18.5

140

60

254 (10) 254 (10)

250S 404 250

406

311

168

24

140

65

250M 405 250

406

349

168

24

140

65

279.4 (11) 279.4 (11) 317.5 (12.5) 317.5 (12.5)

368.3 (14.5) 419.1 (16.5) 406.4 (16) 457.2 (8.5)

215.9 (8.5) 215.9 (8.5)

280S 444 280

457

368

190

24

140

75

280M 445 280

457

419

190

24

140

75

508 (20) 508 (20)

315S 504 315

508

406

216

28

-

-

-

-

-

315M 505 315

508

457

216

28

-

-

-

-

-

Important Note: The shaft extension indicated above for NEMA pertains to ‘T-shaft extension’.

Note: Above table should not be used as an exact comparison for NEMA and IEC frame sizes.

TR.51

Data subject to change without notice. 03/24 • www.wolongamerica.com