Misc. Engineering Data

 

 

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Torque Conversion Tables

 

By

Multiply

N.m

mN.m

Oz.in

Foot.Lb

kg.m

N.m

1

1000

141.61192

0.73756

0.10197

mN.m

10E-3

1

141.62 * 10E-3

0.73756 * 10E-3

0.10197 * 10E-3

Oz.in

7.061552 *10E-3

7.061552

1

5.20831 *10E-3

7.2 *10E-4

Foot.Lb

1.35582

1355.82189

192

1

0.13825

kg.m

9.8

9800

1388.88

7.23327

1

 

 

 

Kt, Ke,  Conversion Tables

 

By

Multiply

V/krpm

V.s/rad

N.m/A

Oz.in/A

V/krpm

1

9.5492 * 10E-3

9.5492 * 10E-3

1.35229

V.s/rad

104.7208

1

1

141.61192

N.m/A

104.7208

1

1

141.61192

Oz.in/A

0.739486

7.061552 * 10E-3

7.061552 * 10E-3

1

 

 

 

Speed  Conversion Tables

 

By

Multiply

rpm

rad/s

Hz

rpm

1

0.10482

0.016666

rad/s

9.54

1

0.15900

Hz

60

6.2892

1

 

 

Current Density

 

The current density is copper magnet wire can be conservatively set at 1 A for every 700 circular mils or 0.354 mm2. Using this number, acceptable current density is 2.82 A/mm2 or 3 A/mm2. The actual current density can be much higher (2 to 5 times) depending on several parameters such as cooling, ambient temperature, etc.