HSS core drill N, uncoated, ⌀ DC h8: 20mm

Article no.: 116620 20
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⌀ DC h8 (mm) Unit price incl. VAT

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  • Tool material: HSS
  • Standard: DIN 343
  • Type: N
  • Tolerance nominal ⌀: h8
  • Point angle: 120

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Product details

Technical Data

Nominal ⌀ DC 20 mm
Coating uncoated
Tool material HSS
Standard DIN 343
Type N
Tolerance nominal ⌀ h8
Point angle 120 degrees
Shank Morse taper
Number of cutting edges Z 3
Through-coolant no
recommended maximum drilling depth L2 110 mm
Flute length Lc 140 mm
Overall length L 238 mm
Min. pre-drilling -⌀ Dmin 14 mm
Morse taper MT size 2
Feed f in steel < 750 N/mm2 0.2 mm/rev.
Colour ring without
Type of product Jobber drill

Identification & Classification

Article number 116620 20
EAN / GTIN 4045197033796
Manufacturer number 116620 20
Manufacturer Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com

Application Table

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
INOX < 900 N/mm²
M
12
GG(G)
K
25
wet maximum
 

Description

Version:

Strong core. Sturdy jobber drill for better guidance in the hole

Advantage:

Particularly suitable for drilling out holes that are out of round. Misaligned holes can be aligned.

Recommendation:

Maximum drilling depth:
L2 = LC - 1.5 × DC.

Note:

Please note:
Do not drill the respective tapping hole ⌀ (see table) less than the stated size.
For suitable reducing adapters for tools with MT shanks see No. 343000-343530.

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