Products | Custom Design | Engineering Tools | Replacement of Obsolete Electronics | Customers
 

CTC Main Page
About CTC
Feedback
Contact CTC

 



Conversion Factors for Servo Calculations

Length | Mass | Moment of Inertia | Rotation | Force
Torque | Power | Torque to Inertia Ratio | Torque Gradient

 

LENGTH

TO OBTAIN

MULTIPY NUMBER OF

BY

cm

inches

2.540

cm

feet

30.48

inches

cm

.3937

inches

feet

12

feet

cm

3.28 x 10-2

feet

inches

8.333 x 10-2

MASS

TO OBTAIN

MULTIPY NUMBER OF

BY

gm

oz

28.35

gm

lb

453.6

gm

slug

1.459 x 10-4

oz

gm

3.527 x 10-2

oz

lb

16

oz

slug

514.7

lb

gm

2.205 x 10-3

lb

oz

6.250 x 10-2

lb

slug

32.17

*slug

gm

6.853 x 10-5

slug

oz

1.943 x 10-3

slug

lb

3.108 x 10-2

*1 slug mass goes at 1 ft/sec2 when acted upon by 1lb force

MOMENT OF INERTIA

TO OBTAIN

MULTIPY NUMBER OF

BY

gm cm2

oz in2

182.9

gm cm2

lb ft2

4.214 x 105

gm cm2

slug ft2

1.356 x 107

oz in2

gm cm2

5.467 x 10-3

oz in2

lb ft2

2.304 x 103

oz in2

slug ft2

7.412 x 104

lb ft2

gm cm2

2.373 x 10-6

lb ft2

oz in2

4.340 x 10-4

lb ft2

slug ft2

32.17

slug ft2

gm cm2

7.376 x 10-8

slug ft2

oz in2

1.349 x 10-5

slug ft2

lb ft2

3.108 x 10-2

ROTATION

TO OBTAIN

MULTIPY NUMBER OF

BY

degrees/sec

RPM

6.

degrees/sec

rad/sec

57.30

RPM

degrees/sec

.1667

RPM

rad/sec

9.549

rad/sec

degrees/sec

1.745 x 10-2

rad/sec

RPM

.1047

FORCE

TO OBTAIN

MULTIPY NUMBER OF

BY

dyne

*gm

980.7

dyne

oz

2.780 x 104

dyne

lb

4.448 x 105

*gm

dyne

1.020 x 10-3

oz

dyne

3.597 x 10-5

lb

dyne

2.248 x 10-6

*used as force units

TORQUE

TO OBTAIN

MULTIPY NUMBER OF

BY

dyne cm

gm cm

980.7

dyne cm

oz in

7.062 x 104

dyne cm

lb ft

1.356 x 107

gm cm

dyne cm

1.020 x 10-3

gm cm

oz in

72.01

gm cm

lb ft

1.383 x 104

oz in

dyne cm

1.416 x 10-5

oz in

gm cm

1.389 x 10-2

oz in

lb ft

192.0

lb ft

dyne cm

7.376 x 10-8

lb ft

gm cm

7.233 x 10-5

lb ft

oz in

5.28 x 10-3

POWER

TO OBTAIN

MULTIPY NUMBER OF

BY

H.P.

(oz in) (deg./sec)

1.653 x 10-7

H.P.

(oz in) (RPM)

9.917 x 10-7

H.P.

(#ft) (deg./sec)

3.173 x 10-5

H.P.

(#ft) (RPM)

1.904 x 10-4

H.P.

Watts

1.341 x 10-3

Watts

(oz in) (deg./sec)

1.232 x 10-4

Watts

(oz in) (RPM)

7.395 x 10-4

Watts

(#ft) (deg./sec)

2.366 x 10-4

Watts

(#ft) (RPM)

.1420

Watts

H.P.

745.7

TORQUE TO INERTIA RATIO

TO OBTAIN

MULTIPY NUMBER OF

BY

rad / sec2

oz in / gm cm2

7.062 x 104

rad / sec2

oz in / oz in2

386.1

TORQUE GRADIENT

TO OBTAIN

MULTIPY NUMBER OF

BY

#ft / rad

oz in/degree

0.2984

dyne cm / rad

oz in/degree

4.046 x 106





 
copyright © 2003 Control Technology Co, Inc. All rights reserved.