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Item no.: 111350

Centre drill HSS R uncoated

Brand: GARANT
Skaft Parallel shank to h7
Norm DIN 333
Tool material HSS
Tolerance nominal ⌀ k12
Type R
Countersink angle with radius 60
Cutting direction right-hand
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Centre drill HSS R uncoated

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Description

Version:

Ground from solid and relief ground, spiral fluted.
Centre drill with radius form R:
  • The radius curve eliminates the sharp transition from drill point to countersink angle that is present on form A, so the risk of fracture is reduced.
  • In the event of angular misalignment of the lathe centre, the ring bearing face avoids the component running only on the external or internal edge of the bearing face. Even if the lathe centres are not in line, good support is provided.

Technical Data

Tool material
HSS 
Coating
uncoated 
Cutting direction
right-hand 
Tolerance nominal ⌀
k12 
Norm
DIN 333 
Skaft
Parallel shank to h7 
Colour ring
without 
Countersink angle with radius
60 degrees
Type

Application Table

Alu plastics
N
70
Aluminium (short chipping)
N
45
Steel < 500 N/mm²
P
40
Steel < 750 N/mm²
P
30
Steel < 900 N/mm²
P
25
Steel < 1100 N/mm²
P
10
Steel < 1400 N/mm²
P
8
CuZn
N
80
Uni
 
Oil
 
wet maximum