Twist drill bit HSCo DIN 338 type RN MFD VARIO
Twist drill bit HSCo DIN 338 type RN MFD VARIO
DRL-TWST-MET-DIN338-HSCO-MFDV-D4,4
ZEBRA
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Low friction and fast chip removal
Exclusive Vario helix
Best centring ability and highest speed
Special 4-surface grind with optimised point thinning
Best guiding properties and accuracy (extremely high torsional rigidity)
Combination of double drill heel with a single drill heel
Up to 9 times longer tool life compared to uncoated drills and up to 2 times longer service life compared to conventional coatings (heat resistant up to 800°C)
Special Magma multi-layer coating
See overview tables for drill bit/material assignments
Datasheets(X)
Suitable for machine type | Milling/drill center |
Material to be processed | Steel |
Quality | ZEBRA-Premium |
Standard / drilling depth | DIN 338 / 5xD |
Diameter (Ø) | 4.4 mm |
Length (l1) | 80 mm |
Chip flute length (l2) | 47 mm |
Shank diameter | 4.4 mm |
Shank style | Cylindrical |
Surface | Magma multilayer coating |
Cutting material | HSCo |
Type | RN |
Angle of the tip | 118 Degree |
Service life (points system) | 4 of 4 points |
Drilling speed (point system) | 4 of 4 points |
Bore hole quality (point system) ( ) | 4 of 4 points |
Versatility (points system) | 4 of 4 points |
Drilling behaviour (point system) | 4 of 4 points |
Suitable for drill (points system) | 2 of 4 points |
Suitable for cordless drills (points system) | 2 of 4 points |
Suitable for upright drilling machine (points system) | 4 of 4 points |
Suitable for milling-drilling centre (points system) | 4 of 4 points |
Self-centring | Yes |
Suitable for tensile strength up to | 1400 N/mm² |
Material of sub-group | General structural steels |
Cutting values | ||||||||||||
For dia. 1.0–2.5 | ||||||||||||
Material designation | Tensile strength | from dia. 1.0 | from dia. 2.0 | from dia. 2.5 | ||||||||
vc | n | f | n | f | n | f | ||||||
From | To | From | To | From | To | From | To | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 36 | 48 | 11459 | 15279 | 0,018 | 5730 | 7639 | 0,063 | 4584 | 6112 | 0,080 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 11459 | 15279 | 0,018 | 5730 | 7639 | 0,063 | 4584 | 6112 | 0,080 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 11459 | 15279 | 0,018 | 5730 | 7639 | 0,063 | 4584 | 6112 | 0,080 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 10823 | 13369 | 0,016 | 5411 | 6685 | 0,050 | 4329 | 5348 | 0,063 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 10823 | 13369 | 0,016 | 5411 | 6685 | 0,050 | 4329 | 5348 | 0,063 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 16 | 28 | 5093 | 8913 | 0,012 | 2546 | 4456 | 0,032 | 2037 | 3565 | 0,040 |
Nitriding steels | ≤ 1200 N/mm² | 16 | 28 | 5093 | 8913 | 0,012 | 2546 | 4456 | 0,032 | 2037 | 3565 | 0,040 |
Tool steels | ≤ 1200 N/mm² | 16 | 28 | 5093 | 8913 | 0,012 | 2546 | 4456 | 0,032 | 2037 | 3565 | 0,040 |
High-speed steels | ≤ 1200 N/mm² | 16 | 28 | 5093 | 8913 | 0,012 | 2546 | 4456 | 0,032 | 2037 | 3565 | 0,040 |
Stainless steels | ||||||||||||
Stainless steels | ≤ 1,200 | 12 | 18 | 3820 | 5730 | 0,014 | 1910 | 2865 | 0,040 | 1528 | 2292 | 0,050 |
Titanium and titanium alloys | ≤ 850 N/mm² | 8 | 12 | 2546 | 3820 | 0,008 | 1273 | 1910 | 0,025 | 1019 | 1528 | 0,032 |
Special alloys | ≤ 1,200 | 5 | 7 | 1592 | 2228 | 0,006 | 796 | 1114 | 0,020 | 637 | 891 | 0,025 |
Hard materials | ||||||||||||
Spring steels | ≤ 330 HB | 16 | 28 | 5093 | 8913 | 0,012 | 2546 | 4456 | 0,032 | 2037 | 3565 | 0,040 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 40 | 45 | 12732 | 14324 | 0,018 | 6366 | 7162 | 0,063 | 5093 | 5730 | 0,080 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 27 | 34 | 8594 | 10823 | 0,018 | 4297 | 5411 | 0,063 | 3438 | 4329 | 0,080 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 6366 | 12732 | 0,016 | 3183 | 6366 | 0,050 | 2546 | 5093 | 0,063 |
For dia. 3.15–5.0 | ||||||||||||
Material designation | Tensile strength | from dia. 3.15 | from dia. 4.0 | from dia. 5.0 | ||||||||
vc | n | f | n | f | n | f | ||||||
From | To | From | To | From | To | From | To | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 36 | 48 | 3638 | 4850 | 0,100 | 2865 | 3820 | 0,125 | 2292 | 3056 | 0,125 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 3638 | 4850 | 0,100 | 2865 | 3820 | 0,125 | 2292 | 3056 | 0,125 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 3638 | 4850 | 0,100 | 2865 | 3820 | 0,125 | 2292 | 3056 | 0,125 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 3436 | 4244 | 0,080 | 2706 | 3342 | 0,100 | 2165 | 2674 | 0,100 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 3436 | 4244 | 0,080 | 2706 | 3342 | 0,100 | 2165 | 2674 | 0,100 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 16 | 28 | 1617 | 2829 | 0,050 | 1273 | 2228 | 0,063 | 1019 | 1783 | 0,063 |
Nitriding steels | ≤ 1200 N/mm² | 16 | 28 | 1617 | 2829 | 0,050 | 1273 | 2228 | 0,063 | 1019 | 1783 | 0,063 |
Tool steels | ≤ 1200 N/mm² | 16 | 28 | 1617 | 2829 | 0,050 | 1273 | 2228 | 0,063 | 1019 | 1783 | 0,063 |
High-speed steels | ≤ 1200 N/mm² | 16 | 28 | 1617 | 2829 | 0,050 | 1273 | 2228 | 0,063 | 1019 | 1783 | 0,063 |
Stainless steels | ||||||||||||
Stainless steels | ≤ 1,200 | 12 | 18 | 1213 | 1819 | 0,063 | 955 | 1432 | 0,080 | 764 | 1146 | 0,080 |
Titanium and titanium alloys | ≤ 850 N/mm² | 8 | 12 | 808 | 1213 | 0,040 | 637 | 955 | 0,050 | 509 | 764 | 0,050 |
Special alloys | ≤ 1,200 | 5 | 7 | 505 | 707 | 0,032 | 398 | 557 | 0,040 | 318 | 446 | 0,040 |
Hard materials | ||||||||||||
Spring steels | ≤ 330 HB | 16 | 28 | 1617 | 2829 | 0,050 | 1273 | 2228 | 0,063 | 1019 | 1783 | 0,063 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 40 | 45 | 4042 | 4547 | 0,100 | 3183 | 3581 | 0,125 | 2546 | 2865 | 0,125 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 27 | 34 | 2728 | 3436 | 0,100 | 2149 | 2706 | 0,125 | 1719 | 2165 | 0,125 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 2021 | 4042 | 0,080 | 1592 | 3183 | 0,100 | 1273 | 2546 | 0,100 |
For dia. 6.3–10.0 | ||||||||||||
Material designation | Tensile strength | from dia. 6.3 | from dia. 8.0 | from dia. 10.0 | ||||||||
vc | n | f | n | f | n | f | ||||||
From | To | From | To | From | To | From | To | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 36 | 48 | 1819 | 2425 | 0,160 | 1432 | 1910 | 0,200 | 1146 | 1528 | 0,250 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 1819 | 2425 | 0,160 | 1432 | 1910 | 0,200 | 1146 | 1528 | 0,250 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 1819 | 2425 | 0,160 | 1432 | 1910 | 0,200 | 1146 | 1528 | 0,250 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 1718 | 2122 | 0,125 | 1353 | 1671 | 0,160 | 1082 | 1337 | 0,200 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 1718 | 2122 | 0,125 | 1353 | 1671 | 0,160 | 1082 | 1337 | 0,200 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 16 | 28 | 808 | 1415 | 0,080 | 637 | 1114 | 0,100 | 509 | 891 | 0,125 |
Nitriding steels | ≤ 1200 N/mm² | 16 | 28 | 808 | 1415 | 0,080 | 637 | 1114 | 0,100 | 509 | 891 | 0,125 |
Tool steels | ≤ 1200 N/mm² | 16 | 28 | 808 | 1415 | 0,080 | 637 | 1114 | 0,100 | 509 | 891 | 0,125 |
High-speed steels | ≤ 1200 N/mm² | 16 | 28 | 808 | 1415 | 0,080 | 637 | 1114 | 0,100 | 509 | 891 | 0,125 |
Stainless steels | ||||||||||||
Stainless steels | ≤ 1,200 | 12 | 18 | 606 | 909 | 0,100 | 477 | 716 | 0,125 | 382 | 573 | 0,160 |
Titanium and titanium alloys | ≤ 850 N/mm² | 8 | 12 | 404 | 606 | 0,063 | 318 | 477 | 0,080 | 255 | 382 | 0,100 |
Special alloys | ≤ 1,200 | 5 | 7 | 253 | 354 | 0,050 | 199 | 279 | 0,063 | 159 | 223 | 0,080 |
Hard materials | ||||||||||||
Spring steels | ≤ 330 HB | 16 | 28 | 808 | 1415 | 0,080 | 637 | 1114 | 0,100 | 509 | 891 | 0,125 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 40 | 45 | 2021 | 2274 | 0,160 | 1592 | 1790 | 0,200 | 1273 | 1432 | 0,250 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 27 | 34 | 1364 | 1718 | 0,160 | 1074 | 1353 | 0,200 | 859 | 1082 | 0,250 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 1011 | 2021 | 0,125 | 796 | 1592 | 0,160 | 637 | 1273 | 0,200 |
For dia. 12.5–20.0 | ||||||||||||
Material designation | Tensile strength | from dia. 12.5 | from dia. 16.0 | from dia. 20.0 | ||||||||
vc | n | f | n | f | n | f | ||||||
From | To | From | To | From | To | From | To | |||||
Steels | ||||||||||||
General structural steels | ≤ 850 N/mm² | 36 | 48 | 917 | 1222 | 0,250 | 716 | 955 | 0,315 | 573 | 764 | 0,400 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 917 | 1222 | 0,250 | 716 | 955 | 0,315 | 573 | 764 | 0,400 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 36 | 48 | 917 | 1222 | 0,250 | 716 | 955 | 0,315 | 573 | 764 | 0,400 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 866 | 1070 | 0,200 | 676 | 836 | 0,250 | 541 | 668 | 0,315 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 34 | 42 | 866 | 1070 | 0,200 | 676 | 836 | 0,250 | 541 | 668 | 0,315 |
Alloyed heat-treated steels | ≤ 1200 N/mm² | 16 | 28 | 407 | 713 | 0,125 | 318 | 557 | 0,160 | 255 | 446 | 0,200 |
Nitriding steels | ≤ 1200 N/mm² | 16 | 28 | 407 | 713 | 0,125 | 318 | 557 | 0,160 | 255 | 446 | 0,200 |
Tool steels | ≤ 1200 N/mm² | 16 | 28 | 407 | 713 | 0,125 | 318 | 557 | 0,160 | 255 | 446 | 0,200 |
High-speed steels | ≤ 1200 N/mm² | 16 | 28 | 407 | 713 | 0,125 | 318 | 557 | 0,160 | 255 | 446 | 0,200 |
Stainless steels | ||||||||||||
Stainless steels | ≤ 1,200 | 12 | 18 | 306 | 458 | 0,160 | 239 | 358 | 0,200 | 191 | 286 | 0,250 |
Titanium and titanium alloys | ≤ 850 N/mm² | 8 | 12 | 204 | 306 | 0,100 | 159 | 239 | 0,125 | 127 | 191 | 0,160 |
Special alloys | ≤ 1,200 | 5 | 7 | 127 | 178 | 0,080 | 99 | 139 | 0,100 | 80 | 111 | 0,125 |
Hard materials | ||||||||||||
Spring steels | ≤ 330 HB | 16 | 28 | 407 | 713 | 0,125 | 318 | 557 | 0,160 | 255 | 446 | 0,200 |
Cast metals | ||||||||||||
Cast iron | ≤ 350 HB | 40 | 45 | 1019 | 1146 | 0,250 | 796 | 895 | 0,315 | 637 | 716 | 0,400 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 27 | 34 | 688 | 866 | 0,250 | 537 | 676 | 0,315 | 430 | 541 | 0,400 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 509 | 1019 | 0,200 | 398 | 796 | 0,250 | 318 | 637 | 0,315 |
Legend |
vc = cutting speed [m/min] |
f = feed (mm/r) |
n = speed [rpm] |
The suggested cutting values are reference values and must be adapted to the respective conditions. |
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