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Article code:
EAN / GTIN:
Manufacturer number:
Cat. Nr.:
Solid carbide drill-reamer with pyramid tip DIN 6535 HA, TiAlN, ⌀ DC: 4H7mm
Article no.: 122797 4H7
Article code:
- Tolerance: H7
- Tool material: Solid carbide
- Standard: Manufacturer’s standard
- Version: 5×D
- Number of cutting edges Z: 2
Product details
Technical Data
| Nominal ⌀ DC | 4 mm | |
| Tolerance | H7 | |
| Coating | TiAlN | |
| Tool material | Solid carbide | |
| Standard | Manufacturer’s standard | |
| Version | 5×D | |
| Number of cutting edges Z | 2 | |
| Point angle | 140 degrees | |
| recommended maximum drilling depth L2 | 30 mm | |
| Shank | DIN 6535 HA with h6 | |
| Through-coolant | yes, with 25 bar | |
| Semi-Standard | yes | |
| Flute length Lc | 36 mm | |
| Overall length L | 74 mm | |
| Shank ⌀ Ds | 6 mm | |
| Feed f in steel < 900 N/mm2 | 0.13 mm/rev. | |
| Colour ring | green | |
| Type of product | Jobber drill |
Identification & Classification
| Article number | 122797 4H7 | |
| EAN / GTIN | 4062406653811 | |
| Manufacturer number | 122797 4H7 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
P
100
P
90
P
80
P
70
P
60
K
90
Description
Version:
For producing toleranced holes in steel or short-chipping materials. Reliable complete machining without separate centring and without subsequent reaming process. Significantly improved self-centring due to additional pyramid tip for optimum roundness and tolerance accuracy of the hole that is produced. Two drill cutting edges and four reaming cutting edges for an attractive surface quality of the wall of the bore.
Tolerance specifications:
H7: Version for H7 bore tolerance.
+/− 0.003 mm: Manufacturing or cutting tolerance of nominal ⌀ DC.
Tolerance specifications:
H7: Version for H7 bore tolerance.
+/− 0.003 mm: Manufacturing or cutting tolerance of nominal ⌀ DC.