{{ name }}
Article no. {{ combinedCodeWithHighlight }}
Article code:
EAN / GTIN:
Manufacturer number:
HiPer-Drill base body, 12×D, ⌀ DC: 31mm
Article no.: 231620 31
Article code:
- Version: 12×D
- Shank: ISO 9766
- Use for drilling: limited cross-drilling; limited drilling through a stack; limited drilling with oblique exit; limited oblique spot drilling
- Number of cutting edges Z: 2
- Through-coolant: yes
Product details
Technical Data
| Series | HiPer-Drill | |
| Version | 12×D | |
| Shank | ISO 9766 | |
| Use for drilling | limited cross-drilling; limited drilling through a stack; limited drilling with oblique exit; limited oblique spot drilling | |
| Number of cutting edges Z | 2 | |
| Through-coolant | yes | |
| Dia. range Dc | 31 mm - 31.99 mm | |
| Reach L1 | 384 mm | |
| Shank ⌀ Ds | 32 mm | |
| Shank length Ls | 60 mm | |
| Clamping screw | 231999 20IP (7.5 Nm) | |
| Overall length L | 488 mm | |
| Type of product | Indexable drill |
Identification & Classification
| Article number | 231620 31 | |
| EAN / GTIN | 4045197688835 | |
| Manufacturer number | 231620 31 | |
| Manufacturer | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
- Very high feed rates and maximum performance due to optimally matched geometries and materials.
- Precise positioning of the cutter insert due to Vee insert seating and secure clamping by the centre bore.
- High concentricity when assembled.
- Shank support for optimum stability in operation.
Polished flutes.
Application:
For stationary and rotating use. For holes up to IT9 accuracy.
Note:
Further sizes up to ⌀ 50.99 mm available on request.
The insert screw must be replaced after every fifth change of cutter insert.
For process reliability when using the drill, initial pilot drilling to 1.5×D with the drill No. 231600 with the same cutter insert size and type is necessary. The generation of a pilot hole improves process reliability.
Clamp in a hydraulic chuck (such as No. 302026 size 20) for optimum radial run-out.
For optimum stability, clamp the drill so the overhang is as short as possible.
Reduce feed rates f by 10 % and vc values by 40 %.
For process reliability when using the drill, initial pilot drilling to 1.5×D with the drill No. 231600 with the same cutter insert size and type is necessary. The generation of a pilot hole improves process reliability.
The insert screw must be replaced after every fifth change of cutter insert.
For process reliability when using the drill, initial pilot drilling to 1.5×D with the drill No. 231600 with the same cutter insert size and type is necessary. The generation of a pilot hole improves process reliability.
Clamp in a hydraulic chuck (such as No. 302026 size 20) for optimum radial run-out.
For optimum stability, clamp the drill so the overhang is as short as possible.
Reduce feed rates f by 10 % and vc values by 40 %.
For process reliability when using the drill, initial pilot drilling to 1.5×D with the drill No. 231600 with the same cutter insert size and type is necessary. The generation of a pilot hole improves process reliability.
Warning:
Bestimmungsgemäße Verwendung
- Für stehenden und rotierenden Einsatz.
- Für mittelgroße Bohrungen bis Genauigkeit IT9, rechtsschneidend.
- Ausschließlich mit KSS-Emulsion zur Innenkühlung verwenden.
- Vor Verwendung Pilotbohrung zur Erhöhung der Prozesssicherheit durchführen.
- Nur mit Schneideinsatz Nr. 231630 – 231690, Spannschraube Nr. 231999 verwenden.
- Spannschraube mit auf Bohrer eingraviertem Drehmoment festziehen.
- Für den industriellen Gebrauch.
- Nur in technisch einwandfreiem und betriebssicherem Zustand verwenden.