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EAN / GTIN:
Manufacturer number:
Cat. No.:
HOLEX Pro Steel solid carbide drill, plain shank DIN 6535 HE, TiAlN, ⌀ DC h7 (mm or inch): 7,2
Article no.: 642840
Catalog no.: 122778
Article code:
Product details
Technical Data
| Through-coolant | yes, with 25 bar | |
| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Cooling lubricant | yes | |
| Series | Pro Steel | |
| Wet maximum | suitable | |
| Manufacturer’s designation | HOLEX Pro Steel VHM-Bohrer zylindrischer Schaft | |
| Interface position | on the machine | |
| Holder type | Plain shank | |
| Interface coding | ZYL00805315 | |
| Holder shape | form E | |
| Holder version | metric | |
| Holder size, metric | 0080 mm | |
| Dry machining | suitable only under restricted conditions | |
| Holder tolerance class | h$06 | |
| Shank diameter | 8 mm | |
| Shank length | 36 mm | |
| Holder diameter, lower dimension | -0.009 mm | |
| Air | suitable | |
| Cutter diameter, min. | 7.2 mm | |
| Cutter diameter, max. | 7.2 mm | |
| Configurable | no | |
| Tolerance of cutter diameter | tolerance class ISO | |
| Tolerance class ISO | h7 | |
| Body diameter | 8 mm | |
| Flute length | 53 mm | |
| Distance from cutter corner to cutter tip | 1.31 mm | |
| Number of teeth | 2 | |
| Twist direction | right-hand | |
| Helix angle, min. | 30 degrees | |
| Angle, 1st step | 140 degrees | |
| Point geometry | A | |
| Type of drilling tool | step drill | |
| Product designation (type) | N | |
| Tool material | solid carbide | |
| Machining group | P (steel) | |
| Cutting media, manufacturer’s designation | VHM TiAlN | |
| Coating | TiAlN | |
| Interface | joint 1 | |
| Gauge length | 55 mm | |
| Usable length | 43 mm | |
| Overall length | 91 mm | |
| Functional length | 89.69 mm | |
| Weight | 45 g | |
| Cutting direction | right-hand cutting | |
| Tool version | solid carbide | |
| Standard | DIN 6537 L | |
| Data carriers | without data carrier | |
| Machining method | drilling into solid material | |
| Colour ring | green | |
| Machining strategy | HPC | |
| Type of product | indexable drill | |
| Content | single part |
Identification & Classification
| Article number | 642840 | |
| Catalog number | 122778 | |
| EAN / GTIN | 4045197837097 | |
| Manufacturer number | 122778 7,2 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
N
250
N
200
N
160
P
125
P
115
P
95
P
90
P
65
M
35
M
30
K
100
K
65
Description
Version:
HOLEX Pro Steel:
Straight major cutting edges and a special flute profile ensure good chip evacuation. The robust cutting edge geometry ensures high-performance drilling with good process reliability. A wide range of applications in steel materials thanks to a combination of tough ultra-fine grain carbide and extremely wear-resistant coating.
Straight major cutting edges and a special flute profile ensure good chip evacuation. The robust cutting edge geometry ensures high-performance drilling with good process reliability. A wide range of applications in steel materials thanks to a combination of tough ultra-fine grain carbide and extremely wear-resistant coating.
Note:
Flute length LC = L2 + 1.5 × DC.