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Solid carbide HPC co-pilot drill, plain shank DIN 6535 HA 20×D 7 mm

Article no.: 123691 7
  • Tool material: Solid carbide
  • Standard: Manufacturer’s standard
  • Version: 20×D
  • Tolerance nominal ⌀: j6
  • Number of cutting edges Z: 2

Product details

Technical Data

Nominal ⌀ DC 7 mm
Coating TiAlN
Tool material Solid carbide
Standard Manufacturer’s standard
Version 20×D
Tolerance nominal ⌀ j6
Number of cutting edges Z 2
Point angle 138 degrees
recommended maximum drilling depth L2 149.5 mm
Shank DIN 6535 HA to h6
Through-coolant yes, with 40 bar
Machining strategy HPC
Pilot drill required yes, pilot drill
Flute length Lc 160 mm
Overall length L 210 mm
Shank ⌀ Ds 8 mm
Feed f in steel < 900 N/mm2 0.12 mm/rev.
Colour ring green
Type of product Jobber drill

Identification numbers & Classifications

Article number 123691 7
EAN / GTIN 4045197569219

Application Table

Steel < 500 N/mm²
P
105
Steel < 750 N/mm²
P
90
Steel < 900 N/mm²
P
90
Steel < 1100 N/mm²
P
90
Steel < 1400 N/mm²
P
70
INOX < 900 N/mm²
M
50
INOX > 900 N/mm²
M
45
GG(G)
K
95
Uni
 
wet maximum
 

Description

Version:

Helical fluted, with 4 guide chamfers and internal coolant holes. New generation of high performance co-pilot drills in the HPC range. With 138° point angle and special j6 cutting edge tolerance for optimum generation of a co-pilot hole. High roundness and alignment accuracy of the co-pilot hole.

Note:

Flute length LC = L2 + 1.5 × DC.
To achieve good process reliability with 40×D and 50×D deep hole drills, it is absolutely essential to drill a pilot hole to the maximum drilling depth with a pilot drill No. 122736 and a 20×D co-pilot hole with a co-pilot drill No. 123691.
The generation of a pilot hole improves process reliability. See also pages 140/141.

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