FOMULA for CHECKING RPM's AND SHEAVES
ON YOUR VIBRATING SCREENS

*Intended for new guys coming into the industry*

1800 (rpm) x 9.0" (motor sheave dia) divide by 20 (screen sheave dia in inches) = 810 RPM


1800 X 9.O
__________ = 810 RPM
20

RPM is very important and we can figure it out without the acutal TACHOMETER. (If may be different is sheaves are worn, which would make it a slower RPM)
OR
.............................................................................................

1740 rpm x 9.6 motor DIVIDE BY
_______________________ = 835 RPM
20 (Motor Sheave dia)

................................................................................................

OR................WORK the known numbers BACKWARDS:

IE: Screen speed 783 rpm x 20
______________________ = 1740 RPM (motor speed)
9 (Motor Sheave)


GOOD ONE TO PRINT for later use.......

Regards,

George Baker - MODERATOR