Twist drill bit HSS DIN 338 type RW
Twist drill HSS DIN 338 type RW
DRL-TWST-MET-DIN338-HSS-RW-D7,5
ZEBRA
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Precise drilling
The stable twist drill bit in short design ensures precise drilling
Self-centring
The split point ensures excellent centring effect even on round materials, eliminating the need for centre-punching or piloting
Long service life
HC (high-speed cutting) finish and the associated precise rake ensure consistent drill hole quality while ensuring a high degree of precision and a long service life
Excellent chip removal
The plain spiral groove ensures excellent chip removal from the drill hole
Product packaging made of 100 % PCR (recycled plastic from household waste), 100 % recyclable and Cradle to Cradle Certified® Bronze
Datasheets(X)
Suitable for machine type | Drill, Cordless screwdrivers, Pedestal drilling machine |
Material to be processed | Non-ferrous metal |
Quality | ZEBRA-Premium |
Standard / drilling depth | DIN 338 / 5xD |
Diameter (Ø) | 7.5 mm |
Length (l1) | 109 mm |
Chip flute length (l2) | 69 mm |
Shank style | Cylindrical |
Surface | Plain |
Cutting material | HSS |
Type | RW |
Angle of the tip | 130 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) | 1 of 4 points |
Drilling behaviour (point system) | 4 of 4 points |
Suitable for drill (points system) | 3 of 4 points |
Suitable for cordless drills (points system) | 3 of 4 points |
Suitable for upright drilling machine (points system) | 3 of 4 points |
Suitable for milling-drilling centre (points system) | 2 of 4 points |
Self-centring | Yes |
Suitable for tensile strength up to | 600 N/mm² |
Material of sub-group | Aluminium, Aluminium alloys, Aluminium wrought alloys, Aluminium casting alloys (<10% silicon), Copper, low-alloyed, Plastics, thermoset |
Key |
vc = cutting speed [m/min] |
f = feed [mm/r] |
n = rotation speed [rpm] |
The suggested cutting values are reference values and must be adapted to the respective conditions. |
For dia. 12.5-16.0 | |||||||||
Material designation | Tensile strength | from dia. 12.5 | from dia. 16.0 | ||||||
vc | n | f | n | f | |||||
from | to | from | to | from | to | ||||
Non-ferrous metals | |||||||||
Aluminium | ≤ 600 N/mm² | 50 | 70 | 1273 | 1783 | 0,250 | 995 | 1393 | 0,315 |
Plastics | |||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 509 | 1019 | 0,200 | 398 | 796 | 0,250 |
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 | |||||
Non-ferrous metals | ||||||||||||
Aluminium | ≤ 600 N/mm² | 50 | 70 | 15915 | 22282 | 0,018 | 7958 | 11141 | 0,063 | 6366 | 8913 | 0,080 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 6366 | 12732 | 0,016 | 3183 | 6366 | 0,050 | 2546 | 5093 | 0,063 |
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 | |||||
Non-ferrous metals | ||||||||||||
Aluminium | ≤ 600 N/mm² | 50 | 70 | 2526 | 3537 | 0,160 | 1989 | 2785 | 0,200 | 1592 | 2228 | 0,250 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 1011 | 2021 | 0,125 | 796 | 1592 | 0,160 | 637 | 1273 | 0,200 |
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 | |||||
Non-ferrous metals | ||||||||||||
Aluminium | ≤ 600 N/mm² | 50 | 70 | 5053 | 7074 | 0,100 | 3979 | 5570 | 0,125 | 3183 | 4456 | 0,125 |
Plastics | ||||||||||||
Plastics | ≤ 200 N/mm² | 20 | 40 | 2021 | 4042 | 0,080 | 1592 | 3183 | 0,100 | 1273 | 2546 | 0,100 |
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