accueil > CENTERING - SPOTTING > Centre drills
Centre drills
JIS HSS-E COBALT
60° Angle - form A
HSS-E Cobalt + TiN = hardness 65 HRC, to machine steels up to 1000 N/mm², cast irons up to 200HB, copper, brass, bronze, aluminium. The TiN coating  hardness 2300 HV increases the tool life for intensive use.
This old standard is still widely used in Japan.
General tolerances
TiN 0818
Old Japanese Standard
Material :
HSS-E Cobalt
Coating :
TiN
Form :
Angle 60°-Form A
Serie :
right hand cut, shorts
Use :
machine use
Type :
Metric
Catalog 219 :
Dxd
L
Reference
€ Unit
3,0x0,5
31
0,6-0,9
80081803050
15,14
4,0x0,8
35
0,9-1,3
80081804080
11,47
4,0x1,0
35
1,2-1,5
80081804100
9,98
5,0x1,2
40
1,3-1,8
80081805120
10,67
5,0x1,5
40
1,5-2,0
80081805150
10,67
6,0x2,0
45
2,0-2,5
80081806200
12,27
6,0x2,5
45
3,1-3,8
80081806250
12,73
7,7x2,5 *
50
2,5-3,0
8008180772550
15,60
7,7x2,5 *
57
2,5-3,0
8008180772557
15,60
7,7x3,0
56
3,0-3,6
80081807730
15,60
7,7x3,2
57
3,2-3,8
80081807732
15,60
8,0x3,0
50
3,9-4,6
80081808300
16,47
8,0x3,2
50
3,9-4,6
80081808320
16,47
10,0x4,0 *
65
4,5-5,1
80081810465
19,57
10,0x4,0 *
69
4,5-5,1
80081810469
20,42
11,0x4,0
69
4,5-5,1
80081811400
35,74
11,0x5,0 *
69
5,5-6,1
80081811569
35,74
11,0x5,0 *
78
5,5-6,1
80081811578
37,47
16,0x6,0
90
7,0-8,0
80081816600
54,50
18,0x6,0
95
7,0-8,0
80081818600
60,24
* Overall length L has to be mentioned