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| Chatterless™ Countersinks |
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| Chatterless™ Design is another Severance Tool innovation that means amazingly smooth, solid contact cutting operation and tool control. |
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| Recommended Countersink Speeds and Feeds |
| Material |
FEED PER TOOTH (FPT) |
H.S.S.
SPEED (SFM) |
CARBIDE
SPEED (SFM) |
| ALUMINUM / ALUMINUM ALLOYS |
.001-.002 |
150-250 |
300-500 |
| BRASS / BRONZE |
.001-.002 |
75-125 |
150-250 |
| IRON - CAST (SOFT) |
.001-.002 |
75-125 |
125-225 |
| IRON - CAST (MEDIUM HARD) |
.001-.002 |
50-100 |
100-175 |
| IRON - MALLEABLE |
.001-.002 |
80-90 |
90-150 |
| MAGNESIUM / MAGNESIUM ALLOYS |
.001-.002 |
125-250 |
250-400 |
| HIGH NICKEL STEEL |
.001-.002 |
30-50 |
50-75 |
| PLASTIC, BAKELITE |
.001-.002 |
100-250 |
250-400 |
| STEEL - MILD |
.001-.002 |
70-100 |
80-170 |
| STEEL - TOOL |
.001-.002 |
50-60 |
60-100 |
| STEEL - FORGINGS |
.001-.002 |
40-50 |
50-80 |
| STEEL - ALLOY (300-400 BRINELL) |
.001-.002 |
20-30 |
30-50 |
| STEEL - HIGH TENSILE (35-45 RC) |
.001-.002 |
25-40 |
35-60 |
| STEEL - HIGH TENSILE (45-50 RC) |
.001-.002 |
15-25 |
25-40 |
| STEEL - HIGH TENSILE (50-55 RC) |
.001-.002 |
7-15 |
15-20 |
| STAINLESS STEEL (FREE MACHINING) |
.001-.002 |
30-80 |
80-125 |
| STAINLESS STEEL (WORK HARDENING) |
.001-.002 |
15-50 |
50-75 |
| INCONELL ALLOY, HASTELLOY WROUGHT |
.001-.002 |
15-50 |
25-35 |
| HASTELLOY (CAST) |
.001-.002 |
5-7 |
7-15 |
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rpm = sfm x 3.82 + cutter o.d.
ipr - fpt x number of teeth
ipm - ipr x rpm
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THE ABOVE SURFACE FEET PER MINUTE ARE TO BE USED AS A GUIDE.
USE OF GOOD QUALITY CUTTING FLUID IS RECOMMENDED.
FOR ADDITIONAL INFORMATION CALL (416) 661-3066 |
| CNC-K™ Precision Countersink Programming/Technical Information |
| Designed specifically for use in NC, CNC and preset machine tools, these precision countersinks feature Chatterless™ tooth geometry Tight tolerances on angles, diameters and lengths assure setting accuracy. Available in 30°, 41°, 45°, 50°, 55° and 60° centerline angles. Other angles and sizes available upon request. |
| Technical and Programming Information |
NOTE: For any depth the Countersink diameter expands in a direct ratio. As you travel in the (A) direction along the axis of the Countersink (X) expands in a direct relationship to angle (K) (forming an angle with the tangent of X/A).
Since the angle expands on both sides of the drilled hole; you must use 2 times the tangent of the angle for your ratio (R). |
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