TRI tool 301SP - 8. CUTTING SPEEDS AND FEEDS; 8.1 Cutting Speeds; 8.2 Basic Feed Recommendations

Model 301SP Tube Squaring Machine
92-0579 Rev. 190612 19
8. CUTTING SPEEDS AND FEEDS
8.1 Cutting Speeds
8.2 Basic Feed Recommendations
Use very light feed for initial facing or until a continuous cut is established. This is
veryimportantforlongertoolbitlifewhencuttingthroughamecutorout-of-round
pipe ends.
Useadequatefeed,.003”to.006”(.08mmto.15mm)perrevolutionthereafter,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.
Stainless steel, which work hardens, must be worked with a heavy enough feed
tostayundertheworkhardenedsurface(.003”to.006”or.08mmto.15mmfeed)
Never allow the tool bit to burnish the surface.
Reduced feeds and speeds will normally minimize chatter problems.
CUTTING SPEEDS FOR TUBE SQUARING
Outside Diameter of the Pipe or Tube
RPM
Range
Time
per Head
Revolution
.25" 6.4 mm 30 to 60 1 to 2 seconds
.50" 12.7 mm 20 to 40 1.5 to 3 seconds
.75" 19.1 mm 15 to 30 2 to 4 seconds
1.00" 25.4 mm 15 to 25 2.4 to 4 seconds