accueil > CENTERING - SPOTTING > Centre drills
Centre drills
ASA TYPE BELL
60° Angle with chamfer
form B
HSS = hardness 63 HRC, to machine steels up to 800 N/mm², copper, brass, bronze, aluminium up to 6% Si.

Centre drills with protective chamfer quarantee the centre obtained from any risk of blows and deformation.
The play resulting from the protective chamfer makes it easier to load parts between points on machine with automatic feed.
General tolerances
Magafor 135
American standard
Material :
HSS
Form :
Angle 60°-Form B
with 120° chamfer
Serie :
right hand cut, shorts
Use :
machine use
Type :
Inch
Catalog 219 :
Packaging : Up to N°15 :
Boxes of 10 pieces only
ASA
N°
Dxd
mm
Dxd
inch
L
K
Reference
€ Unit
11
3,17x1,19
1/8x3/64
31
2,5
1,4-1,7
81135110000
10,67
12
4,76x1,58
3/16x1/16
47
3,8
1,9-2,2
81135120000
10,67
13
6,35x2,38
1/4x3/32
50
5,1
2,8-3,4
81135130000
10,67
14
7,93x2,77
5/16x7/64
54
6,3
3,3-3,9
81135140000
12,05
15
11,11x3,96
7/16x5/32
70
8,9
4,8-5,4
81135150000
20,37
16
12,7x4,76
1/2x3/16
76
10,1
5,9-6,5
81135160000
22,66
17
15,87x5,55
5/8x7/32
82
12,7
6,9-7,5
81135170000
33,27
18
19,05x6,35
3/4x1/4
89
15,2
8,0-8,6
81135180000
58,51
19
22,22x7,93
7/8x5/16
92
17,8
10,0-10,6
81135190000
70,56
20
25,4x9,52
1x3/8
95
20,3
12,1-12,7
81135200000
100,39