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DIN counterbore for through holes, uncoated, Counterbore ⌀ D1 ×pin ⌀ D2: 20X13mm
Article no.: 244431
Catalog no.: 156020
Article code:
Product details
Technical Data
| Through-coolant | no | |
| Entry of cooling lubricant | without cooling lubricant entry | |
| Escape of cooling lubricant | without cooling lubricant exit | |
| Feed f | 0.16 mm/rev. | |
| Wet maximum | suitable | |
| Interface position | on the machine | |
| Holder type, joint 1 | plain shank | |
| Interface coding | ZYL01250105 | |
| Holder shape | plain shank | |
| Holder version | metric | |
| Holder size, metric | 12,5 mm | |
| Type of mounting | spigot | |
| Holder tolerance class | h9 | |
| Shank diameter DS | 12.5 mm | |
| Length of shank LS | 40 mm | |
| Shank type | HA | |
| Cooling lubricant | yes | |
| Manufacturer’s designation | DIN-Flachsenker für Durchgangsloch | |
| Cutter diameter, min. Dc min. | 20 mm | |
| Configurable | no | |
| Tolerance of cutter diameter | manufacturer tolerance | |
| For hole diameter d | 13 mm | |
| Flute length Lc | 46 mm | |
| Number of teeth Z | 3 | |
| Twist direction | right-hand | |
| Angle, 1st step | 180 degrees | |
| Pilot pin | with fixed guiding pin | |
| Pin diameter D2 | 13 mm | |
| Product designation (type) | N | |
| Application for type of drilling | through hole | |
| Tool material | HSS | |
| Machining group | N (non-ferrous metals); P (steel) | |
| Cutting media, manufacturer’s designation | HSS | |
| Coating | uncoated | |
| Interface | joint 1 | |
| Usable length L1 | 60 mm | |
| Overall length L | 100 mm | |
| Weight | 100 g | |
| Cutting direction | right-hand cutting | |
| Tool version | solid steel | |
| Standard | DIN 373 | |
| Machining method | subland drilling (SPL) | |
| Type of product | subland drill | |
| Recommended maximum drilling depth | 22 mm | |
| Feed in | steel < 500 N/mm2 | |
| Content | single part |
Identification & Classification
| Article number | 244431 | |
| Catalog number | 156020 | |
| EAN / GTIN | 4045197087799 | |
| Manufacturer number | 156020 20X13 | |
| Article class | 11M | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Application Table
N
33
P
28
P
27
Description
Version:
Spiral fluted counterbore. The pilot ⌀ matches the intended purpose:
f − for through holes fine quality to DIN ISO 273.
m − for through holes medium quality to DIN ISO 273.
f − for through holes fine quality to DIN ISO 273.
m − for through holes medium quality to DIN ISO 273.
Application:
For counterboring socket head screws DIN 912, 6912, 7984, and cheese head screws ISO 1207 (DIN 84).