21
Model 301 Tube Squaring Machine
92-0630 Rev. 190612
8. CUTTING SPEEDS AND FEEDS
8.1 CUTTING SPEEDS
Use the following chart to determine the RPM needed for a specific Tool Bit
cutting speed.
CUTTING SPEEDS
Outside Diameter of
the Pipe or Tube
RPM for 200 in/min
(508 cm/min)
RPM for 250 in/min
(635 cm/min)
RPM for 300 in/min
(762 cm/min)
.13"
3.2 mm
509
637
764
.25"
6.4 mm
255
318
382
.38"
9.5 mm
239
209
251
.50"
12.7 mm
127
159
191
.75"
19.1 mm
85
106
127
1.00"
25.4 mm
64
80
86
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.
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
Summary of Contents for 301A
Page 1: ...92 0630 Rev 190612 Model 301 Tube Squaring Machine ...
Page 42: ......
