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Manufacturer number:
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Solid carbide drill plain shank DIN 6535 HA 180°, TiAlN, ⌀ DC m7: 4mm
Article no.: 122793 4
Article code:
Product details
Technical Data
| Tool material | solid carbide | |
| Standard | Werksnorm | |
| Coating | TiAlN | |
| Cutter diameter, min. Dc min. | 4 mm | |
| Tolerance class ISO | m7 | |
| Overall length L | 74 mm | |
| Flute length Lc | 36 mm | |
| Shank diameter DS | 6 mm | |
| Angle, 1st step | 180 degrees | |
| Helix angle, min. | 30 degrees | |
| Product designation (type) | N | |
| Through-coolant | yes, with 25 bar | |
| Number of teeth Z | 2 | |
| Content | single part | |
| Cooling lubricant | yes | |
| Manufacturer’s designation | VHM-Bohrer zylindrischer Schaft | |
| Interface position | on the machine | |
| Holder type | plain shank | |
| Holder shape | Standard | |
| Holder version | metric | |
| Length of shank LS | 36 mm | |
| Shank type | HA | |
| Configurable | no | |
| Tolerance of cutter diameter | tolerance class ISO | |
| Twist direction | right-hand | |
| Pilot drill required | yes | |
| Interface | joint 1 | |
| Tolerance class | m7 | |
| Gauge length A | 38 mm | |
| Usable length L1 | 29 mm | |
| Functional length | 29 mm | |
| Weight | 20 g | |
| Cutting direction | right-hand cutting | |
| Tool version | solid carbide | |
| Machining method | drilling into solid material (BVB) | |
| Colour ring | green | |
| Type of product | indexable drill | |
| Version (×D) | 5×D | |
| Recommended maximum drilling depth | 30 mm |
Identification & Classification
| Article number | 122793 4 | |
| EAN / GTIN | 4045197586513 | |
| Manufacturer number | 122793 4 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
P
85
P
75
P
60
P
50
M
45
K
90
Description
Version:
Special point geometry for generating 180° flat-bottomed holes. Low radial forces even when spot drilling on faces with up to 15° slope. Flute geometry for optimum chip evacuation. With 4 guide chamfers to stabilise the drill in the hole.
Advantage:
The 180° point angle permits drilling and counterboring in a single operation.
Recommendation:
When using the solid carbide 180° drill it is absolutely essential for process reliability:
- When spot drilling on flat surfaces to drill a pilot hole 1×D using pilot drill No. 122736.
- When spot drilling on sloping surfaces up to max. 15° : reduce the feed rate f to 25% of the stated value. After spot drilling, the normal feed rate value can be used.
Note:
Flute length LC = L2 + 1.5 × DC.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122793 + 129100HB .
Form HE: order with No. 122793 + 129100HE.
180° solid carbide drills for machining aluminium available on request.
Not suitable for generating counterbores for socket-head screws to DIN974-1.
Form HB and HE supplied at the same price as HA.
Form HB: order with No. 122793 + 129100HB .
Form HE: order with No. 122793 + 129100HE.
180° solid carbide drills for machining aluminium available on request.
Not suitable for generating counterbores for socket-head screws to DIN974-1.