Page 53 - NEW PRODUCT CATALOG 2022 INCH
P. 53
16xD, 20xD
Tensile Hardness Material Cutting Cutting Diameter
Strength Speed Feed (IPR)
ISO Material Condition [ksi] HB No. Vc (SFM) Ø.125"-.197" Ø.200"-.315" Ø.319"-.391" Ø.393"-.625" Ø.630"-.787"
< 0.25 %C Annealed 61 125 1
Non-alloy steel >= 0.25 %C Annealed 94 190 2
and cast steel, 123 250 3
free cutting steel < 0.55 %C Quenched and tempered 109 220 4
>= 0.55 %C Annealed
>= 0.55 %C Quenched and tempered 145 300 5 230-300
P Low alloy steel and cast steel Annealed 87 200 6 .0035-.0045 .0047-.0066 .0055-.0086 .0063-.011 .007-.013
(less than 5% of alloying elements) Quenched and tempered 135 275 7
145 300 8
174 350 9
High alloyed steel, cast steel, Annealed 99 200 10 230-280
and tool steel 325 11
Quenched and tempered 160
Stainless steel and cast steel Ferritic/martensitic. 99 200 12 190-230 .0023-.0035 .0031-.0055 .0039-.007 .0047-.0086 .0051-.0102
Martensitic 119 240 13
M Stainless steel and cast steel
Austenitic 87 180 14 180-220 .00157-.00315 .00236-.00472 .0031-.0063 .0047-.0078 .0055-.0094
Grey cast iron (GG) Ferritic/pearlitic 180 15
Pearlitic
K Cast iron nodular (GGG) Ferritic 260 16
Pearlitic
160 17 260-330 .0055-.0087 .0063-.0095 .007-.011 .0078-.0137 .0098-.0177
250 18
.0023-.0047 .0031-.0063 .0047-.0078 .0055-.0094
Malleable cast iron Ferritic 130 19 .0023-.0047 .0031-.0063 .0047-.0078 .0055-.0094
Pearlitic 230 20 .0023-.0047 .0031-.0063 .0047-.0078 .0055-.0094
Fe based Annealed 200 31 110-150 .0015-.00314
Cured 280 32
S High temp. alloys Ni or Co Annealed 250 33
based Cured 350 34 100-130 .0015-.00314
Cast 320 35
Titanium Ti alloys Pure 58 110 36 110-150 .0015-.00314
Alpha+beta alloys cured 152 310 37
TIPS & TRICKS for DEEP HOLE DRILLING
Using a G73 peck cycle helps Chip evacuation in deep hole drilling & materials which have a poor chip formation
16xD - 50xD must utilize a Pilot hole drill
40xD - 50xD can utilize a 20xD intermediary drill if deemed necessary
TIR & tool alignment with material are the most important factors in deep hole Drilling
Use high pressure coolant when deep hole drilling
Slow the feedrate to 50% when breaking through the material
In through holes, the tool exit should not exceed .078”-.118”.
Recommended Drilling Procedure for Deep Hole Drilling
1 Drill a pilot hole 1-2xD deep with a short drill. The pilot drill should be 1
.0011”-.0019” larger than the long drill and its point angle should 2
also be larger (over 135°). 3
4
2 Enter the pre-hole using low feed and rotate at low speed
(50-100 RPM) until it engages the material.
3 Activate the coolant system and increase rotation speed to the
recommended cutting parameter, maintain for 2-3 seconds, then
continue at recommended drilling feed. No pecking is required.
4 After having reached the required depth, reduce speed to
50-100 RPM before retracting from the hole.
Spiral Channels with Internal
Coolant for Efficient Lubrication
51
