accueil > CENTERING - SPOTTING > Centre drills
Centre drills
radius - form R
left hand cut
HSS = hardness 63 HRC, to machine steels up to 800 N/mm², copper, brass, bronze, aluminium up to 6% Si.

The magafor centre drill with radius thanks to its special profile, is more robust than the 60° centre drill :
the radius eliminates the risk of breakage
it provides an exact bearing
it serves as a protective chamfer.
General tolerances
Magafor 170
ISO ˜ NFE 66051-R ˜ DIN 333-R ˜ JIS-1
Material :
HSS
Form :
With radius-Form R
Serie :
left hand cut, shorts
Use :
machine use
Type :
Metric
Catalog 219 :
Dxd
L
R
Reference
€ Unit
3,15x0,8 *
25
2,5
2,6-2,9
81170315080
11,47
3,15x1,0
31
2,9
3,0-3,3
81170315100
11,25
3,15x1,25
31
3,15
3,3-3,6
81170315125
11,25
4,0x1,6
35
4,0
4,2-4,7
81170416000
10,67
5,0x2,0
40
5,0
5,0-5,4
81170520000
10,90
6,3x2,5
45
6,3
6,3-6,8
81170632500
11,36
8,0x3,15
50
8,0
8,0-8,5
81170831500
14,05
10,0x4,0
55
10,0
10,0-10,6
81171040000
25,81
12,5x5,0
63
12,5
12,5-13,1
81171255000
37,28
16,0x6,3
71
16
16,0-16,6
81171663000
61,39
20,0x8,0
80
20
20,0-20,7
81172080000
117,02
* Single end