Tri Tool Boilermaster Beveler Standard - Manual (Page 21)

21
Model BOILERMASTER™
92-0629 : Rev. 080714
CUTTING SPEEDS AND FEEDS
RPM for RPM for RPM for
200 in / min 250 in / min 300 in/ min
(5080 mm / min) (6350 mm / min) (7620 mm / min)
1" 1.315" 33.4 mm 48 61 73
2" 2.375" 60.3 mm 27 34 40
3" 3.500" 88.9 mm 18 23 27
3 1/2" 4.000" 101.6 mm 16 20 24
4" 4.500" 114.3 mm 14 18 21
Nominal
Pipe
Diameter
True DIA
Cutting Speed (approximately)
Use 200 surface inches per minute (5080 surface millimeters per minute) for:
Stainless steels in general when no coolant is allowed, all heavy-wall tube
and some chrome/molybdenum steels.
Use 250 surface inches per minute (6350 surface millimeters per minute) for:
Mild steels and some thin-wall stainless steels when coolants are permitted
and applied.
Use 300 surface inches per minute (7620 surface millimeters per minute) for:
Aluminum and some thin-wall mild steel and tube with coolants.
CUTTING FEEDS
Use very light feed for initial beveling or until a continuous cut is established.
This is very important for longer tool bit life when cutting though flame cut or
out of square pipe ends.
Use adequate feed, .003" to .006" (.08 mm to .15 mm) per revolution there-after, to
establish a continuous chip cut.
If the feed is too light, only light stringer chips will be removed.
If the feed is too heavy the drive will start to overload and the chip will start to
have a rough or torn appearance.