Calculated Industries 4087 - RPM (SPINDLE SPEED)

26 — Ma c h i n i s t ca l c ™ Pr o
rPm (SPINDlE SPEED)
 is the rotational speed of the spindle in revolutions per

rotation of the attached cutting tool. In a turning machine, it is


RPM – Milling


RPM
Diameter: .375″
KEYSTROKE DISPLAY
OO
0.
1. Enter the bit Diameter:
.375d
DIA $ 0.375 INCH
2. Enter the Cutting Speed:
300C
CUT $ 300. FEET/MIN
3. Calculate the Spindle Speed (RPM):
R
RPM 3056.
R
CUT $ 300. FEET/MIN
R
DIA $ 0.375 INCH
rR
* RPM $ 3055.7749
* The calculated RPM is displayed as a rounded, whole number value.
rR
displays the stored RPM value in decimal oating point format .