User`s guide
Us e r 's GU i d e  — 29
KEYSTROKE DISPLAY
OO
0.
1. Enter the bit Diameter:  
3/8d
DIA   0-3/8 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   0-3/8 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
.
RPM - Turning 
Calculate the Spindle Speed (RPM) needed to turn a piece with 
a 5” Diameter at a recommended Cutting Speed of 650 sfm:
KEYSTROKE DISPLAY
OO
0.
1. Enter the bit Diameter:
5id
DIA   5 INCH
2. Enter the Cutting Speed:
650C
CUT   650. FEET/MIN
3. Calculate the Spindle Speed (RPM):
R
*  RPM 497.
* Repeated presses of 
R
 will toggle through the inputs and outputs, 
starting with the entered Cutting Speed.










