Gearbox Calculations

[nickcvet89]

Yes, thanks for the help

[Ether]

Originally Posted by nickcvet89

Yes, thanks for the help

You can enter those numbers:

stall torque = 2*70.5*2.7 = 381 ozin*

free speed = 19,300/2.7 = 7148 rpm*

stall amps = 2*85 = 170 amps

free amps = 2.8 amps

... into the motor calculator using option "u" (UserDefined motor):

Motor Calculator  build MCALC32ae 2/21/2012 117am


Select motor:
1)CIM      6)FP0673   d)FP2719   f)FP9012    g)FP9015    h)FP9013
a)am-0912  b)am-0914  7)DensoL   8)DensoR    c)Denso0160 u)UserDefined
2)RS395    3)RS540    4)RS550    e)RS775-12  5)RS775-18  x)exit u


Enter the following motor specs in the order and units indicated,
separated by spaces or tabs:
volts   stall_ozin      free_rpm        stall_amps      free_amps
12      381             7148            170             2.8

UserDefined-> 12.0 381.0  7148 170.0  2.8 @ 12.00 volts:

@ free (no load):
   oz-in      Nm     rpm    rpm%    amps   watts out  watts heat    eff%
     0.0   0.000    7148   100.0     2.8         0.0        33.6     0.0

@ stall:
   oz-in      Nm     rpm    rpm%    amps   watts out  watts heat    eff%
   381.0   2.690       0     0.0   170.0         0.0      2040.0     0.0

@ max power:
   oz-in      Nm     rpm    rpm%    amps   watts out  watts heat    eff%
   190.5   1.345    3574    50.0    86.4       503.5       533.3    48.6

@ max efficiency:
   oz-in      Nm     rpm    rpm%    amps   watts out  watts heat    eff%
    43.3   0.306    6335    88.6    21.8       203.0        58.8    77.5

Select input:
1)oz-in  7)watts_in    3)rpm    5)amps   8)eff%
2)Nm     6)watts_out   4)rpm%   9)volts  a)rpm&ozin   b)rpm&amps

... and then you can do calculations to determine the operating point under various conditions of speed, load , or applied voltage.