HOLEX Pro Steel solid carbide drill, plain shank DIN 6535 HE, TiAlN, ⌀ DC h7: 6,9mm

Article no.: 123309 6,9
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⌀ DC h7 (mm) Unit price incl. VAT

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  • Tool material: Solid carbide
  • Standard: Manufacturer’s standard
  • Version: 12×D
  • Tolerance nominal ⌀: h7
  • Number of cutting edges Z: 2

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Product details

Technical Data

Series Pro Steel
Nominal ⌀ DC 6,9 mm
Coating TiAlN
Tool material Solid carbide
Standard Manufacturer’s standard
Version 12×D
Tolerance nominal ⌀ h7
Number of cutting edges Z 2
Point angle 135 degrees
recommended maximum drilling depth L2 97,65 mm
Shank DIN 6535 HE to h6
Through-coolant yes, with 25 bar
Machining strategy HPC
Flute length Lc 108 mm
Overall length L 146 mm
Shank ⌀ Ds 8 mm
Feed f in steel < 900 N/mm2 0,16 mm/rev.
Colour ring green
Type of product Jobber drill

Identification & Classification

Article number 123309 6,9
EAN / GTIN 4062406092078
Manufacturer number 123309 6,9
Manufacturer Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Deutschland, www.hoffmann-group.com

Application Table

Alu plastics
N
250
Aluminium (short chipping)
N
200
Alu > 10% Si
N
160
Steel < 500 N/mm²
P
125
Steel < 750 N/mm²
P
115
Steel < 900 N/mm²
P
95
Steel < 1100 N/mm²
P
90
Steel < 1400 N/mm²
P
65
INOX < 900 N/mm²
M
35
INOX > 900 N/mm²
M
30
GG
K
100
GGG
K
65
Uni
 
wet maximum
 
wet minimum
 

Description

Version:

HOLEX Pro Steel:
Straight major cutting edges
and a special flute profile ensure good chip evacuation. The robust cutting edge geometry ensures high-performance drilling with good process reliability. A wide range of applications in steel materials thanks to a combination of tough ultra-fine grain carbide and extremely wear-resistant coating.

Note:

Flute length LC = L2 + 1.5 × DC.
For process reliability when using the 12×D drill, an initial centre drilling with NC spotting drills No. 121068 - 121130 or HOLEX Pro Steel No. 122501 is necessary.

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