HPT extra-short twist drill bit DIN 1897
Twist drill HSCo-PM DIN 1897 3xD type Forte TiAlN
DRL-SPRL-MET-DIN1897-TIALN-HPT-D6,9MM
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Product code | 900 |
Material to be processed | Steel, Cast metal, Stainless steel |
Standard / drilling depth | DIN 1897 / 3xD |
Design | Extra short |
Diameter (Ø) | 6.9 mm |
Length (l1) | 74 mm |
Chip flute length (l2) | 34 mm |
Shank style | Cylindrical |
Surface | TiAlN |
Cutting material | HSCo-PM |
Angle of the tip | 130 Degree |
Suitable for tensile strength up to | 1300 N/mm² |
Material of sub-group | General structural steels, Non-alloyed tempering steels, Alloyed tempering steels, Nitriding steels, Grey cast iron, Malleable cast iron, Stainless steels < 850 N/mm², Stainless steels > 850 N/mm² |
Cutting values for HSS drill bits | |||||||
For dia. 2.8 to dia. 12 | |||||||
Material designation | Tensile strength | vc | f | ||||
from | to | Dia. 2.8-4.9 | Dia. 5-7.9 | Dia. 8-11.9 | Dia. 12 | ||
General structural steels | < 500 N/mm² | 70 | 90 | 0,050 | 0,130 | 0,220 | 0,270 |
500-850 N/mm² | 70 | 90 | 0,050 | 0,130 | 0,220 | 0,270 | |
Carbon steels | < 850 N/mm² | 70 | 90 | 0,050 | 0,130 | 0,220 | 0,270 |
850-1000 N/mm² | 40 | 60 | 0,030 | 0,080 | 0,110 | 0,170 | |
Unalloyed heat-treated steels | < 700 N/mm² | 40 | 60 | 0,030 | 0,080 | 0,110 | 0,170 |
700-850 N/mm² | 40 | 60 | 0,030 | 0,080 | 0,110 | 0,170 | |
850-1000 N/mm² | 40 | 50 | 0,030 | 0,060 | 0,100 | 0,150 | |
Alloyed heat-treated steels | 850-1000 N/mm² | 30 | 40 | 0,020 | 0,050 | 0,090 | 0,130 |
1000-1200 N/mm² | 30 | 40 | 0,020 | 0,050 | 0,090 | 0,130 | |
Unalloyed case-hardening steels | < 750 N/mm² | 50 | 70 | 0,030 | 0,080 | 0,110 | 0,170 |
Alloyed case-hardening steels | < 1000 N/mm² | 40 | 60 | 0,020 | 0,050 | 0,090 | 0,130 |
1000-1200 N/mm² | 40 | 50 | 0,020 | 0,050 | 0,090 | 0,130 | |
Nitriding steels | < 1000 N/mm² | 30 | 40 | 0,020 | 0,050 | 0,090 | 0,130 |
1000-1200 N/mm² | 30 | 40 | 0,020 | 0,050 | 0,090 | 0,130 | |
General structural steels | < 500 N/mm131 | 30 | 40 | 0,020 | 0,050 | 0,090 | 0,130 |
500-850 N/mm131 | 30 | 40 | 0,020 | 0,050 | 0,090 | 0,130 | |
General structural steels | < 500 N/mm131 | 25 | 35 | 0,020 | 0,050 | 0,090 | 0,130 |
500-850 N/mm131 | 25 | 35 | 0,020 | 0,050 | 0,090 | 0,130 | |
Carbon steels | < 850 N/mm131 | 10 | 20 | 0,020 | 0,050 | 0,090 | 0,130 |
850-1000 N/mm131 | 10 | 15 | 0,020 | 0,050 | 0,090 | 0,130 | |
Stainless steels, sulphurated | < 700 N/mm² | 18 | 28 | 0,020 | 0,050 | 0,090 | 0,130 |
Stainless steels, austenitic | < 700 N/mm² | 15 | 25 | 0,020 | 0,050 | 0,090 | 0,130 |
< 850 N/mm² | 15 | 25 | 0,020 | 0,050 | 0,090 | 0,130 | |
Stainless steels, martensitic | < 1100 N/mm² | 12 | 20 | 0,020 | 0,050 | 0,090 | 0,130 |
Special alloys | < 1200 N/mm² | 10 | 15 | 0,020 | 0,050 | 0,090 | 0,130 |
Cast iron | < 180 HB | 70 | 90 | 0,050 | 0,130 | 0,220 | 0,270 |
> 180 HB | 50 | 70 | 0,040 | 0,110 | 0,170 | 0,220 | |
Nodular graphite, malleable iron | > 180 HB | 70 | 90 | 0,050 | 0,130 | 0,220 | 0,270 |
> 260 HB | 50 | 70 | 0,040 | 0,110 | 0,170 | 0,220 |
Key |
vc = cutting speed [m/min] |
f = feed [mm/r] |
The suggested cutting values are reference values and must be adapted to the respective conditions. |
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