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Manufacturer number:
Cat. No.:
High-precision countersink with unequal spacing with 3 drive flats 60°, TiAlN, External ⌀ Dc: 25mm
Article no.: 644027
Catalog no.: 150817
Article code:
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Extremely unequal spacing (cutting edges arranged at unequal intervals)
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Product details
Technical Data
| Through-coolant | no | |
| Cooling lubricant | yes | |
| Interface position | on the machine | |
| Holder type | Plain shank | |
| Interface coding | ZYL01000115 | |
| Holder shape | straight clamping flat | |
| Holder version | metric | |
| Holder size, metric | 0100 mm | |
| Type of mounting | spigot | |
| Holder tolerance class | h9 | |
| Shank diameter DS | 10 mm | |
| Shank length LS | 43 mm | |
| Cutter diameter, min. Dc min. | 6.3 mm | |
| Cutter diameter, max. Dc max. | 25 mm | |
| Configurable | no | |
| Tolerance of cutter diameter | manufacturer tolerance | |
| For hole diameter d | 6.3 mm | |
| Flute length Lc | 25 mm | |
| Number of teeth Z | 3 | |
| Twist direction | right-hand | |
| Helix angle, min. | 0 degrees | |
| Angle, 1st step | 60 degrees | |
| Pilot pin | without guiding pin | |
| Product designation (type) | N | |
| Spacing of the countersink cutting edges | extremely unequal | |
| Tool material | HSS | |
| Cutting media, manufacturer’s designation | HSS | |
| Coating | TiAlN | |
| Interface | joint 1 | |
| Gauge length A | 28 mm | |
| Usable length L1 | 28 mm | |
| Overall length L | 71 mm | |
| Functional length | 16.19 mm | |
| Weight | 79 g | |
| Cutting direction | right-hand cutting | |
| Standard | DIN 334 | |
| Colour ring | green | |
| Type of product | countersink | |
| Content | single part |
Identification & Classification
| Article number | 644027 | |
| Catalog number | 150817 | |
| EAN / GTIN | 4045197889515 | |
| Manufacturer number | 150817 25 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
N
75
N
75
N
50
P
65
P
50
P
30
P
18
P
8
H
8
M
16
M
10
S
12
K
25
N
60
N
Description
Version:
High-precision 60° countersink with unequal spacing.
Special geometry with extremely unequal spacing and matching cutting edge preparation. Radially relief ground. Flutes ground from solid. Newly developed special TiAlN coating for long service life.
Three drive flats on the shank for use in a 3-jaw chuck.
Special geometry with extremely unequal spacing and matching cutting edge preparation. Radially relief ground. Flutes ground from solid. Newly developed special TiAlN coating for long service life.
Three drive flats on the shank for use in a 3-jaw chuck.
Advantage:
Very smooth cutting throughout the entire countersinking operation. Chatter-free running for perfect results and optimum tool service life.
Application:
High-precision countersinks for production of exactly round 60° countersunk surfaces.