Twist drill bit HSCO DIN 338 SMART STEP
Twist drill bit HSCo DIN 338 SMART STEP
DRL-TWST-MET-DIN338-HSCO-SMARTSTEP-D11,0
ZEBRA SMART STEP
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Newly designed stepped drill bit tip geometry (from dia. 2.5 mm)
Significantly faster than conventional twist drill bits
Significantly less effort required when drilling compared to conventional twist drill bits
Precise, circular holes without centre-punching
Extremely comfortable drilling
- Eliminates pre-drilling, precise spot drilling without running off-centre
- Angled drilling possible
- Simple drilling or enlarging of an existing drill hole
- Perfect for drilling out rivets
- Ideal for drilling in round material or pipes with stringent requirements for centring, precision and service life, e.g. in railing construction
The first twist drill bit to enable precise drilling up to dia. 20 mm without pre-drilling in hand-held tools
- Optimised stepped drill bit tip geometry
- Shank reduced to dia. 12.7 mm from > 13.0 mm drill bit diameter for use in all standard 3-jaw drill chucks
3-flat shank (from dia. 4 mm)
- No spinning in the drill chuck: faster, more comfortable working
- Optimal power transmission
- Protects the drill chuck from damage
- Minimal effort required to loosen and tighten the drill chuck
Product packaging made from 100 % PCR (recycled plastic from household waste) and 100 % recyclable
For blind holes, please note the extended drill tip (see dimension l3)!
Datasheets(X)
- Perfect for drilling round pipes (e.g. in railing construction), for drilling out stud bolts, rivet holes, for drilling sheet metal and thin-walled profile materials
- Ideal for high-precision, comfortable and fast drilling in solid materials
- Ideal for large bore diameters
Suitable for machine type | Drill, Cordless screwdrivers, Pedestal drilling machine |
Material to be processed | Steel, Cast iron, Stainless steel, Titanium, Non-ferrous metal, Wood, Hardwood |
Quality | ZEBRA-Premium |
Standard / drilling depth | DIN 338 / 5xD |
Diameter (Ø) | 11.0 mm |
Length (l1) | 142 mm |
Chip flute length (l2) | 94 mm |
Drill tip length (l3) | 10.2 mm |
Shank style | 3-face shank |
Surface | Oxide finish |
Cutting material | HSCo |
Service life (points system) | 3 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) | 4 of 4 points |
Suitable for cordless drills (points system) | 4 of 4 points |
Suitable for upright drilling machine (points system) | 4 of 4 points |
Self-centring | Yes |
Suitable for tensile strength up to | 1200 N/mm² |
Material of sub-group | General structural steels, Non-alloyed tempering steels, Alloyed tempering steels, Nitriding steels, Tool steels, High-speed steels, Cast iron, Ductile iron, Malleable cast iron, White cast iron, Stainless steels, sulphurated, Stainless steels, martensitic, Stainless steels, austenitic, Titanium, Titanium alloys, Spring steels, Aluminium, Aluminium alloys, Aluminium casting alloys (<10% silicon), Magnesium alloys, Copper, low-alloyed, Brass, short-chipping, Brass, long-chipping, Bronze, short-chipping, Bronze, long-chipping, Plastics, thermoset, Plastics, thermoplastic |
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. |
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 | |||||
General structural steels | ≤ 850 N/mm² | 18 | 27 | 458 | 687 | 0,040 | 358 | 537 | 0,042 | 286 | 430 | 0,044 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 458 | 687 | 0,040 | 358 | 537 | 0,042 | 286 | 430 | 0,044 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 458 | 687 | 0,040 | 358 | 537 | 0,042 | 286 | 430 | 0,044 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 382 | 585 | 0,037 | 298 | 457 | 0,040 | 238 | 366 | 0,042 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 382 | 585 | 0,037 | 298 | 457 | 0,040 | 238 | 366 | 0,042 |
Alloyed heat-treated steels | ≤ 1000 N/mm² | 10 | 15 | 254 | 382 | 0,037 | 199 | 298 | 0,040 | 159 | 238 | 0,042 |
Nitriding steels | ≤ 1000 N/mm² | 10 | 15 | 254 | 382 | 0,037 | 199 | 298 | 0,040 | 159 | 238 | 0,042 |
Tool steels | ≤ 1000 N/mm² | 10 | 15 | 254 | 382 | 0,037 | 199 | 298 | 0,040 | 159 | 238 | 0,042 |
High-speed steels | ≤ 1000 N/mm² | 10 | 15 | 254 | 382 | 0,037 | 199 | 298 | 0,040 | 159 | 238 | 0,042 |
Cast iron | ≤ 350 HB | 15 | 23 | 382 | 585 | 0,037 | 298 | 457 | 0,040 | 238 | 366 | 0,042 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 15 | 23 | 382 | 585 | 0,037 | 298 | 457 | 0,040 | 238 | 366 | 0,042 |
Stainless steels | 1,200 N/mm² | 8 | 12 | 203 | 305 | 0,037 | 159 | 238 | 0,04 | 109 | 168 | 0,042 |
Titanium | 850 N/mm² | 6 | 10 | 153 | 255 | 0,035 | 119 | 199 | 0,038 | 79 | 129 | 0,04 |
Aluminium | ≤ 600 N/mm² | 35 | 45 | 891 | 1146 | 0,040 | 696 | 895 | 0,041 | 557 | 716 | 0,044 |
Plastics, duroplastic | 15 | 23 | 382 | 585 | 0,041 | 298 | 457 | 0,042 | 238 | 366 | 0,044 | |
Plastics, thermoplastic | 15 | 23 | 382 | 585 | 0,041 | 298 | 457 | 0,042 | 238 | 366 | 0,044 | |
Softwood | 21 | 30 | 535 | 764 | 0,042 | 418 | 597 | 0,045 | 334 | 477 | 0,047 | |
Hardwood | 18 | 27 | 458 | 687 | 0,039 | 358 | 537 | 0,042 | 286 | 430 | 0,044 |
Cutting parameters for twist drill bit HSCo DIN 338 SMART STEP | ||||||||||||
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 | |||||
General structural steels | ≤ 850 N/mm² | 18 | 27 | 5732 | 8598 | 0,011 | 2866 | 4299 | 0,013 | 2292 | 3439 | 0,017 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 5732 | 8598 | 0,011 | 2866 | 4299 | 0,013 | 2292 | 3439 | 0,017 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 5732 | 8598 | 0,011 | 2866 | 4299 | 0,013 | 2292 | 3439 | 0,017 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 4777 | 7324 | 0,01 | 2388 | 3662 | 0,012 | 1910 | 2929 | 0,014 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 4777 | 7324 | 0,01 | 2388 | 3662 | 0,012 | 1910 | 2929 | 0,014 |
Alloyed heat-treated steels | ≤ 1000 N/mm² | 10 | 15 | 3184 | 4777 | 0,01 | 1592 | 2388 | 0,012 | 1273 | 1910 | 0,014 |
Nitriding steels | ≤ 1000 N/mm² | 10 | 15 | 3184 | 4777 | 0,01 | 1592 | 2388 | 0,012 | 1273 | 1910 | 0,014 |
Tool steels | ≤ 1000 N/mm² | 10 | 15 | 3184 | 4777 | 0,01 | 1592 | 2388 | 0,012 | 1273 | 1910 | 0,014 |
High-speed steels | ≤ 1000 N/mm² | 10 | 15 | 3184 | 4777 | 0,01 | 1592 | 2388 | 0,012 | 1273 | 1910 | 0,014 |
Cast iron | ≤ 350 HB | 15 | 23 | 4777 | 7324 | 0,01 | 2388 | 3662 | 0,012 | 1910 | 2929 | 0,014 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 15 | 23 | 4777 | 7324 | 0,01 | 2388 | 3662 | 0,012 | 1910 | 2929 | 0,014 |
Stainless steels | 1,200 N/mm² | 8 | 12 | 2547 | 3821 | 0,01 | 1273 | 1910 | 0,012 | 1019 | 1518 | 0,014 |
Titanium | 850 N/mm² | 6 | 10 | 1910 | 3183 | 0,008 | 955 | 1592 | 0,01 | 764 | 1273 | 0,012 |
Aluminium | ≤ 600 N/mm² | 35 | 45 | 11146 | 14331 | 0,011 | 5573 | 7165 | 0,013 | 4458 | 5732 | 0,016 |
Plastics, duroplastic | 15 | 23 | 4777 | 7324 | 0,012 | 2388 | 3662 | 0,014 | 1910 | 2929 | 0,017 | |
Plastics, thermoplastic | 15 | 23 | 4777 | 7324 | 0,012 | 2388 | 3662 | 0,014 | 1910 | 2929 | 0,017 | |
Softwood | 21 | 30 | 6688 | 9554 | 0,013 | 3344 | 4777 | 0,015 | 2675 | 3821 | 0,018 | |
Hardwood | 18 | 27 | 5732 | 8598 | 0,011 | 2866 | 4299 | 0,014 | 2292 | 3439 | 0,016 |
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 | |||||
General structural steels | ≤ 850 N/mm² | 18 | 27 | 909 | 1364 | 0,029 | 716 | 1074 | 0,032 | 573 | 859 | 0,037 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 909 | 1364 | 0,029 | 716 | 1074 | 0,032 | 573 | 859 | 0,037 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 909 | 1364 | 0,029 | 716 | 1074 | 0,032 | 573 | 859 | 0,037 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 758 | 1162 | 0,027 | 597 | 915 | 0,030 | 477 | 732 | 0,033 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 758 | 1162 | 0,027 | 597 | 915 | 0,030 | 477 | 732 | 0,033 |
Alloyed heat-treated steels | ≤ 1000 N/mm² | 10 | 15 | 505 | 758 | 0,027 | 398 | 597 | 0,030 | 318 | 477 | 0,033 |
Nitriding steels | ≤ 1000 N/mm² | 10 | 15 | 505 | 758 | 0,027 | 398 | 597 | 0,030 | 318 | 477 | 0,033 |
Tool steels | ≤ 1000 N/mm² | 10 | 15 | 505 | 758 | 0,027 | 398 | 597 | 0,030 | 318 | 477 | 0,033 |
High-speed steels | ≤ 1000 N/mm² | 10 | 15 | 505 | 758 | 0,027 | 398 | 597 | 0,030 | 318 | 477 | 0,033 |
Cast iron | ≤ 350 HB | 15 | 23 | 758 | 1162 | 0,027 | 597 | 915 | 0,030 | 477 | 732 | 0,033 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 15 | 23 | 758 | 1162 | 0,027 | 597 | 915 | 0,030 | 477 | 732 | 0,033 |
Stainless steels | 1,200 N/mm² | 8 | 12 | 404 | 606 | 0,027 | 318 | 477 | 0,03 | 254 | 382 | 0,033 |
Titanium | 850 N/mm² | 6 | 10 | 303 | 505 | 0,025 | 239 | 398 | 0,028 | 191 | 318 | 0,031 |
Aluminium | ≤ 600 N/mm² | 35 | 45 | 1769 | 2274 | 0,029 | 1393 | 1791 | 0,032 | 1114 | 1433 | 0,037 |
Plastics, duroplastic | 15 | 23 | 758 | 1162 | 0,030 | 597 | 915 | 0,033 | 477 | 732 | 0,038 | |
Plastics, thermoplastic | 15 | 23 | 758 | 1162 | 0,030 | 597 | 915 | 0,033 | 477 | 732 | 0,038 | |
Softwood | 21 | 30 | 1061 | 1516 | 0,031 | 836 | 1194 | 0,034 | 668 | 955 | 0,039 | |
Hardwood | 18 | 27 | 909 | 1364 | 0,031 | 716 | 1074 | 0,033 | 573 | 859 | 0,037 |
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 | |||||
General structural steels | ≤ 850 N/mm² | 18 | 27 | 1819 | 2729 | 0,019 | 1433 | 2149 | 0,022 | 1146 | 1719 | 0,027 |
Unalloyed heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 1819 | 2729 | 0,019 | 1433 | 2149 | 0,022 | 1146 | 1719 | 0,027 |
Low-alloy heat-treated steels | ≤ 850 N/mm² | 18 | 27 | 1819 | 2729 | 0,019 | 1433 | 2149 | 0,022 | 1146 | 1719 | 0,027 |
Unalloyed heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 1516 | 2325 | 0,017 | 1194 | 1831 | 0,020 | 955 | 1464 | 0,023 |
Low-alloy heat-treated steels | ≤ 1000 N/mm² | 15 | 23 | 1516 | 2325 | 0,017 | 1194 | 1831 | 0,020 | 955 | 1464 | 0,023 |
Alloyed heat-treated steels | ≤ 1000 N/mm² | 10 | 15 | 1011 | 1516 | 0,017 | 796 | 1194 | 0,020 | 636 | 955 | 0,023 |
Nitriding steels | ≤ 1000 N/mm² | 10 | 15 | 1011 | 1516 | 0,017 | 796 | 1194 | 0,020 | 636 | 955 | 0,023 |
Tool steels | ≤ 1000 N/mm² | 10 | 15 | 1011 | 1516 | 0,017 | 796 | 1194 | 0,020 | 636 | 955 | 0,023 |
High-speed steels | ≤ 1000 N/mm² | 10 | 15 | 1011 | 1516 | 0,017 | 796 | 1194 | 0,020 | 636 | 955 | 0,023 |
Cast iron | ≤ 350 HB | 15 | 23 | 1516 | 2325 | 0,017 | 1194 | 1831 | 0,020 | 955 | 1464 | 0,023 |
Spheroidal graphite and malleable iron | ≤ 350 HB | 15 | 23 | 1516 | 2325 | 0,017 | 1194 | 1831 | 0,020 | 955 | 1464 | 0,023 |
Stainless steels | 1,200 N/mm² | 8 | 12 | 808 | 1213 | 0,017 | 636 | 955 | 0,02 | 509 | 764 | 0,023 |
Titanium | 850 N/mm² | 6 | 10 | 606 | 1011 | 0,015 | 477 | 796 | 0,018 | 382 | 637 | 0,021 |
Aluminium | ≤ 600 N/mm² | 35 | 45 | 3538 | 4549 | 0,018 | 2786 | 3582 | 0,022 | 2229 | 2866 | 0,027 |
Plastics, duroplastic | 15 | 23 | 1516 | 2325 | 0,019 | 1194 | 1831 | 0,023 | 955 | 1464 | 0,028 | |
Plastics, thermoplastic | 15 | 23 | 1516 | 2325 | 0,019 | 1194 | 1831 | 0,023 | 955 | 1464 | 0,028 | |
Softwood | 21 | 30 | 2123 | 3033 | 0,019 | 1672 | 2388 | 0,024 | 1338 | 1910 | 0,029 | |
Hardwood | 18 | 27 | 1819 | 2729 | 0,019 | 1433 | 2149 | 0,023 | 1146 | 1719 | 0,028 |
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