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Twist drill bit HSS DIN 1897 type RN - DRL-TWST-MET-DIN1897-HSS-D7,5

Twist drill bit HSS DIN 1897 type RN

Twist drill HSS DIN 1897 type RN
DRL-TWST-MET-DIN1897-HSS-D7,5
ZEBRA

Art.-no. 0624700750
EAN 4052712043031
All versions

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Twist drill bit HSS DIN 1897 type RN

Art.-no. 0624700750

Prices for customers after login
Quantity
PU
x 10 pcs

Exclusively for trade customers

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The extra-short, steel precision drill bit for general, broad applications in steel up to 1,000 N/mm² and in cast iron.

20 % lower infeed force compared to conventional drill bits as well as quicker work progress and more effortless working


Optimised cross web thinning



Precise spot drilling without centring, even on curved surfaces


Optimised split point



Ideal for core holes


Very precise point geometry for precise drill holes



Excellent adhesive properties of cooling lubricants and reduced buildup of material deposits


Vapour-plated surface



Product packaging made from 100 % PCR (recycled plastic from household waste) and 100 % recyclable

Suitable for machine type

Drill, Cordless screwdrivers, Pedestal drilling machine

Material to be processed

Steel, Cast iron

Quality

ZEBRA-Premium

Standard / drilling depth

DIN 1897 / 3xD

Diameter (Ø)

7.5 mm

Length (l1)

74 mm

Chip flute length (l2)

34 mm

Shank diameter

7.5 mm

Shank style

Cylindrical

Surface

Vaporised

Cutting material

HSS

Type

RN

Angle of the tip

130 Degree

Service life (points system)

3 of 4 points

Drilling speed (point system)

3 of 4 points

Bore hole quality (point system) ( )

4 of 4 points

Versatility (points system)

2 of 4 points

Drilling behaviour (point system)

3 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)

1 of 4 points

Self-centring

Yes

Suitable for tensile strength up to

1000 N/mm²

Material of sub-group

General structural steels, Non-alloyed tempering steels, Cast iron, Ductile iron, Malleable cast iron, Magnesium alloys, Copper, low-alloyed, Brass, short-chipping, Brass, long-chipping, Plastics, thermoset, Plastics, thermoplastic

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. 12.5-20.0
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 25 30 637 764 0,200 497 597 0,250 398 477 0,315
Unalloyed quenched and tempered steels ≤ 850 N/mm² 25 30 637 764 0,200 497 597 0,250 398 477 0,315
Low-alloy quenched and tempered steels ≤ 850 N/mm² 25 30 637 764 0,200 497 597 0,250 398 477 0,315
Unalloyed quenched and tempered steels ≤ 1,000 N/mm² 22 25 560 637 0,160 438 497 0,200 350 398 0,250
Low-alloy quenched and tempered steels ≤ 1,000 N/mm² 22 25 560 637 0,160 438 497 0,200 350 398 0,250
Alloyed quenched and tempered steels ≤ 1,200 N/mm² 10 16 255 407 0,125 199 318 0,160 159 255 0,200
Nitriding steels ≤ 1,200 N/mm² 10 16 255 407 0,125 199 318 0,160 159 255 0,200
Tool steels ≤ 1,200 N/mm² 10 16 255 407 0,125 199 318 0,160 159 255 0,200
High-speed steels ≤ 1,200 N/mm² 10 16 255 407 0,125 199 318 0,160 159 255 0,200
Cast metals
Cast iron ≤ 350 HB 28 32 713 815 0,250 557 637 0,315 446 509 0,400
Spheroidal graphite and malleable iron ≤ 350 HB 22 25 560 637 0,250 438 497 0,315 350 398 0,400
Plastics
Plastics ≤ 200 N/mm² 20 30 509 764 0,200 398 597 0,250 318 477 0,315
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 25 30 7958 9549 0,016 3979 4775 0,050 3183 3820 0,063
Unalloyed quenched and tempered steels ≤ 850 N/mm² 25 30 7958 9549 0,016 3979 4775 0,050 3183 3820 0,063
Low-alloy quenched and tempered steels ≤ 850 N/mm² 25 30 7958 9549 0,016 3979 4775 0,050 3183 3820 0,063
Unalloyed quenched and tempered steels ≤ 1,000 N/mm² 22 25 7003 7958 0,014 3501 3979 0,040 2801 3183 0,050
Low-alloy quenched and tempered steels ≤ 1,000 N/mm² 22 25 7003 7958 0,014 3501 3979 0,040 2801 3183 0,050
Alloyed quenched and tempered steels ≤ 1,200 N/mm² 10 16 3183 5093 0,012 1592 2546 0,032 1273 2037 0,040
Nitriding steels ≤ 1,200 N/mm² 10 16 3183 5093 0,012 1592 2546 0,032 1273 2037 0,040
Tool steels ≤ 1,200 N/mm² 10 16 3183 5093 0,012 1592 2546 0,032 1273 2037 0,040
High-speed steels ≤ 1,200 N/mm² 10 16 3183 5093 0,012 1592 2546 0,032 1273 2037 0,040
Cast metals
Cast iron ≤ 350 HB 28 32 8913 10186 0,018 4456 5093 0,063 3565 4074 0,080
Spheroidal graphite and malleable iron ≤ 350 HB 22 25 7003 7958 0,018 3501 3979 0,063 2801 3183 0,080
Plastics
Plastics ≤ 200 N/mm² 20 30 6366 9549 0,016 3183 4775 0,050 2546 3820 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
Steels
General structural steels ≤ 850 N/mm² 25 30 1263 1516 0,125 995 1194 0,160 796 955 0,200
Unalloyed quenched and tempered steels ≤ 850 N/mm² 25 30 1263 1516 0,125 995 1194 0,160 796 955 0,200
Low-alloy quenched and tempered steels ≤ 850 N/mm² 25 30 1263 1516 0,125 995 1194 0,160 796 955 0,200
Unalloyed quenched and tempered steels ≤ 1,000 N/mm² 22 25 1112 1263 0,100 875 995 0,125 700 796 0,160
Low-alloy quenched and tempered steels ≤ 1,000 N/mm² 22 25 1112 1263 0,100 875 995 0,125 700 796 0,160
Alloyed quenched and tempered steels ≤ 1,200 N/mm² 10 16 505 808 0,080 398 637 0,100 318 509 0,125
Nitriding steels ≤ 1,200 N/mm² 10 16 505 808 0,080 398 637 0,100 318 509 0,125
Tool steels ≤ 1,200 N/mm² 10 16 505 808 0,080 398 637 0,100 318 509 0,125
High-speed steels ≤ 1,200 N/mm² 10 16 505 808 0,080 398 637 0,100 318 509 0,125
Cast metals
Cast iron ≤ 350 HB 28 32 1415 1617 0,160 1114 1273 0,200 891 1019 0,250
Spheroidal graphite and malleable iron ≤ 350 HB 22 25 1112 1263 0,160 875 995 0,200 700 796 0,250
Plastics
Plastics ≤ 200 N/mm² 20 30 1011 1516 0,125 796 1194 0,160 637 955 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
Steels
General structural steels ≤ 850 N/mm² 25 30 2526 3032 0,080 1989 2387 0,100 3183 3820 0,100
Unalloyed quenched and tempered steels ≤ 850 N/mm² 25 30 2526 3032 0,080 1989 2387 0,100 3183 3820 0,100
Low-alloy quenched and tempered steels ≤ 850 N/mm² 25 30 2526 3032 0,080 1989 2387 0,100 3183 3820 0,100
Unalloyed quenched and tempered steels ≤ 1,000 N/mm² 22 25 2223 2526 0,063 1751 1989 0,080 2801 3183 0,080
Low-alloy quenched and tempered steels ≤ 1,000 N/mm² 22 25 2223 2526 0,063 1751 1989 0,080 2801 3183 0,080
Alloyed quenched and tempered steels ≤ 1,200 N/mm² 10 16 1011 1617 0,050 796 1273 0,063 1273 2037 0,063
Nitriding steels ≤ 1,200 N/mm² 10 16 1011 1617 0,050 796 1273 0,063 1273 2037 0,063
Tool steels ≤ 1,200 N/mm² 10 16 1011 1617 0,050 796 1273 0,063 1273 2037 0,063
High-speed steels ≤ 1,200 N/mm² 10 16 1011 1617 0,050 796 1273 0,063 1273 2037 0,063
Cast metals
Cast iron ≤ 350 HB 28 32 2829 3234 0,100 2228 2546 0,125 3565 4074 0,080
Spheroidal graphite and malleable iron ≤ 350 HB 22 25 2223 2526 0,100 1751 1989 0,125 2801 3183 0,080
Plastics
Plastics ≤ 200 N/mm² 20 30 2021 3032 0,080 1592 2387 0,100 2546 3820 0,100

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Additional accessory:
 
Product
Description
Quantity
PU
Price
/PU
CUT+COOL Perfect drilling and cutting oil
CUT+COOL Perfect drilling and cutting oil

CUTOIL-PERFECT-(CUT-COOL)-5LTR

High-performance cutting oil for the heaviest machining work and higher cutting speeds
x 1 pcs
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