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Article code:
EAN / GTIN:
Manufacturer number:
GARANT Master Steel DEEP solid carbide deep hole drill, plain shank DIN 6535 HA 20×D, TiAlN, ⌀ DC: 3mm
Article no.: 123890 3
Article code:
- Schneidstoff: Solid carbide
- Standard: Manufacturer’s standard
- Version: 20×D
- Toleranz Nenn-⌀: j6
- Number of cutting edges Z: 2
Product details
Technical Data
| Series | Master Steel | |
| Nominal ⌀ DC | 3 mm | |
| Beschichtung | TiAlN | |
| Schneidstoff | Solid carbide | |
| Standard | Manufacturer’s standard | |
| Version | 20×D | |
| Toleranz Nenn-⌀ | j6 | |
| Number of cutting edges Z | 2 | |
| Point angle | 138 degrees | |
| recommended maximum drilling depth L2 | 67.5 mm | |
| Schaft | DIN 6535 HA to h6 | |
| Innenkühlung | yes, with 40 bar | |
| Machining strategy | HPC | |
| Pilotbohrer notwendig | yes, pilot drill | |
| Flute length Lc | 72 mm | |
| Overall length L | 115 mm | |
| Shank ⌀ Ds | 6 mm | |
| Feed f in steel < 900 N/mm2 | 0.07 mm/rev. | |
| Colour ring | green | |
| Type of product | Jobber drill |
Identification & Classification
| Article number | 123890 3 | |
| EAN / GTIN | 4062406266219 | |
| Manufacturer number | 123890 3 | |
| Manufacturer | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
P
120
P
110
P
105
P
105
P
85
M
65
M
60
S
25
K
110
Description
Version:
Excellent chip evacuation due to the unequal helical pitch of the flutes, guide rings and additional guide chamfers for very high precision when drilling. Maximum process reliability due to exactly matching tools within the overall system. Drilling up to the maximum depth without a pilot drill. Significantly increased tool stability due to the substantially strengthened core. Increased metal removal rates and outstanding tool lives lead to an economical high-end drilling process.
Note:
Flute length LC = L2 + 1.5 × DC.
For process reliability when using the 16×D deep-hole drill, initial centre drilling with No. 121068 – 121121 or a pilot hole of at least 4×D with pilot drill No. 122736 is necessary. For deep holes greater than 20×D, a pilot hole to the maximum drilling depth with pilot drill No. 122736 is absolutely essential. The generation of a pilot hole improves process reliability. The specified L/D ratio gives the minimum achievable depth of hole with the respective deep-hole drill.
For process reliability when using the 16×D deep-hole drill, initial centre drilling with No. 121068 – 121121 or a pilot hole of at least 4×D with pilot drill No. 122736 is necessary. For deep holes greater than 20×D, a pilot hole to the maximum drilling depth with pilot drill No. 122736 is absolutely essential. The generation of a pilot hole improves process reliability. The specified L/D ratio gives the minimum achievable depth of hole with the respective deep-hole drill.