Jobber drills with straight shank DIN 338

Carbide tipped taper shank twist drills
DIN 8041
Range of applications
Manufacturing specifications
Carbide tipped
Best.-Nr. 89302
Type N
R
Specially designed for drilling spring
steel, hard cast iron of more than 300
Brinell, pure moybdenum, very hard
bronze and similar difficult materials as
well as synthetic materials reinforced
with glass fibers, such as printed circuit
board and other resin-based thermohardened
products likely to cause rapid
wear on the lands and cutting edges of
high speed drills.
Point grinding: relieved cone
Point angle: 118˚
Web thinned: to DIN 1412, form A
Helix angle: standard
Web thickness: standard
Web taper: standard
Flute form: standard
Tolerance on Ø: h8
Carbide grade:
Carbide tipped (K10/K20)
9,50...30,00 Carbide tipped
Carbide tipped
#d1 89302
#d2# 89302
02
02
R
R
nom.-Ø
mm
Morse
taper
total
length
mm
flute
length
mm
N
nom.-Ø
mm
Morse
taper
total
length
mm
flute
length
mm
N
8.00 1 130 40 ○
9.00 | 135 45 ○
9.50 | 135 45 ○
10.00 | 140 50 ○
11.00 | 140 50
11.50 | 146 56 ○
12.00 | | |
12.50 | | | ○
13.00 1 146 56
13.50 2 168 63 ○
14.00 | | |
14.50 | | |
15.00 | 168 63
16.00 | 175 70
16.50 | | | ○
17.00 | 175 70 ○
17.50 | 185 80
18.00 | | |
18.50 | | | ○
19.00 2 185 80 ○
20.00 3 215 90
21.00 3 215 90
22.00 | 215 90
22.50 | 225 100 ○
25.00 3 225 100
26.00 4 260 110 ○
28.00 | 260 110
29.00 | 275 125 ○
32.00 | 275 125 ○
40.00 | 310 160
49.00 4 350 200 ○
125