Tri Tool 602TSB Clamshell Air - Manual (Page 26)

26
TRI TOOL INC.
92-0139 : Rev.131230
CUTTING SPEEDS
The chart shows RPM required to obtain specified Tool Bit cutting speed at the
surface of the tube.
Cutting Speeds (Approximately)
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)
2.000" 50.8 mm 32 40 48
1.750" 44.5 mm 36 46 55
1.500" 38.1 mm 42 53 64
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.