Tri Tool CBM-1 Counterbore Module - Manual (Page 12)

12
TRI TOOL INC.
92-0192 : Rev. 930618
CUTTING SPEEDS
The chart shows RPM to obtain specified Tool bit surface cutting speed on the
surface of the pipe.
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.
3" (76.2 mm) 21 27 32
2" (50.8 mm) 32 40 48
1" (25.4 mm) 64 80 95
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.)
Cutting Speeds (Approx.)