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Article code:
EAN / GTIN:
Manufacturer number:
Cat. Nr.:
Solid carbide HPC co-pilot drill, plain shank DIN 6535 HA 20×D, TiAlN, ⌀ DC: 7mm
Article no.: 123691 7
Article code:
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Plain shank DIN 6535 HA
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- 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 & Classification
| Article number | 123691 7 | |
| EAN / GTIN | 4045197569219 | |
| Manufacturer number | 123691 7 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
P
105
P
90
P
90
P
90
P
70
M
50
M
45
K
95
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 with maximum drilling depth with 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.
To achieve good process reliability with 40×D and 50×D deep hole drills it is absolutely essential to drill a pilot hole with maximum drilling depth with 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.