Tri Tool 601SBM Clamshell Air - Manual (Page 27)

27
Model 601SBM Low Profile Clamshell
92-0092 Rev. 131230
CUTTING SPEEDS
The chart shows RPM to obtain specified Tool Bit surface cutting speed on the
surface of the pipe.
Cutting Speeds (Approximately)
Pipe
Size
True Diameter
RPM for
200 in/min
(508 cm/
min)
RPM for
250 in/min
(635 cm/
min)
RPM for
300 in/min
(762 cm/
min)
1.00" 1.315" 33.4 mm 48 61 73
.75" 1.050" 26.7 mm 61 76 90
.50" .840" 21.3 mm 76 95 114*
.38" .675" 17.1 mm 94 118* 142*
.25" .540" 13.7 mm 118" 147* 177*
*This speed is the maximum rated speed of the standard drive.
Use 200 surface inches per minute (508 surface centimeters per minute) for:
Stainless steels in general when no coolant is allowed, all heavy-wall tube and some
of the chrome/molybdenum steels.
Use 250 surface inches per minute (635 surface centimeters per minute) for:
Mild steels and some thin wall stainless steels when coolants are permitted and
applied.
Use 300 surface inches per minute (762 surface centimeters per minute) for:
Aluminum and thin-wall mild steel and tube with coolants.