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Manufacturer number:
Cat. No.:
Solid carbide HPC co-pilot drill, plain shank DIN 6535 HA 20×D, TiAlN, ⌀ DC: 7,5mm
Article no.: 527987
Catalog no.: 123691
Article code:
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Plain shank DIN 6535 HA
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Product details
Technical Data
| Through-coolant | yes, with 40 bar | |
| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Feed f | 0.12 mm/rev. | |
| Wet maximum | suitable | |
| Interface position | on the machine | |
| Holder type | plain shank | |
| Interface coding | ZYL00800115 | |
| Holder shape | plain shank | |
| Holder version | metric | |
| Holder size, metric | 8 mm | |
| Holder tolerance class | h6 | |
| Shank diameter DS | 8 mm | |
| Length of shank LS | 36 mm | |
| Shank type | HA | |
| Cooling lubricant | yes | |
| Manufacturer’s designation | VHM-HPC-Co-Pilotbohrer zylindrischer Schaft DIN 6535 HA 20×D, TiAlN | |
| Cutter diameter, min. Dc min. | 7.5 mm | |
| Configurable | no | |
| Tolerance of cutter diameter | tolerance class ISO | |
| Tolerance class ISO | j6 | |
| Flute length Lc | 180 mm | |
| Number of teeth Z | 2 | |
| Twist direction | right-hand | |
| Helix angle, min. | 30 degrees | |
| Angle, 1st step | 138 degrees | |
| Type of drilling tool | double chamfer drill | |
| Pilot drill required | yes | |
| Tool material | solid carbide | |
| Machining group | K (cast iron); M (stainless steel); P (steel) | |
| Cutting media, manufacturer’s designation | VHM TIALN | |
| Coating | TiAlN | |
| Interface | joint 1 | |
| Tolerance class | j6 | |
| Gauge length A | 194 mm | |
| Usable length L1 | 169 mm | |
| Overall length L | 230 mm | |
| Weight | 79 g | |
| Cutting direction | right-hand cutting | |
| Tool version | solid carbide | |
| Standard | Werksnorm | |
| Machining method | drilling into solid material (BVB) | |
| Colour ring | green | |
| Machining strategy | HPC | |
| Type of product | indexable drill | |
| Version (×D) | 20×D | |
| Recommended maximum drilling depth | 168.8 mm | |
| Feed in | steel < 900 N/mm2 | |
| Content | single part |
Identification & Classification
| Article number | 527987 | |
| Catalog number | 123691 | |
| EAN / GTIN | 4045197569226 | |
| Manufacturer number | 123691 7,5 | |
| Article class | 11E | |
| 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.