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Article code:
EAN / GTIN:
Manufacturer number:
Cat. Nr.:
Heavy-duty chuck with anti-pull-out function, SK 50, ⌀ D1: 20mm
Article no.: 300767 20
Article code:
- Arbor standard: ISO 7388-1
- Shape: AD
- Through-coolant: yes
- Balance quality G at rotational speed: G 2.5 at 25,000 rpm
- Concentricity: ≤ 5
Product details
Technical Data
| Clamping ⌀ D1 | 20 mm | |
| Adapter | SK 50 | |
| Arbor standard | ISO 7388-1 | |
| Shape | AD | |
| Through-coolant | yes | |
| Balance quality G at rotational speed | G 2.5 at 25,000 rpm | |
| Concentricity | ≤ 5 µm | |
| Machining strategy | HPC | |
| Overhang dimension A | 80 mm | |
| Collet outer ⌀ D | 50 mm | |
| Clamping force up to | 900 Nm | |
| Suitable C-hook (pin) spanner No. 628400 | 45/50 | |
| Type of product | Heavy-duty chuck |
Identification & Classification
| Article number | 300767 20 | |
| EAN / GTIN | 4062406261238 | |
| Manufacturer number | 300767 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Deutschland, www.hoffmann-group.com |
Description
Version:
- Shanks hard turned (smooth cutting action).
- Very high clamping force prolongs tool life and improves surface quality.
- Centred tool clamping with optimum concentricity.
- Integral length adjustment screw.
- Internal coolant feed.
Advantage:
HB (Weldon) flat provides quick and easy protection against the milling cutter pulling out. Positive connection between the milling cutter and arbor. Compact vibration-optimised contour.
Application:
For clamping tools with parallel shank and HB flat. Ideally suited for heavy-duty machining (HPC, TPC).
Supplied with:
Clamping nut.
Note:
Slots in the clamping bore are not intended for coolant transfer. Coolant feed can only be performed directly through the tool.
Warning:
Intended use
Reasonably foreseeable misuse
- For clamping tools with plain shank and HB flat in machine tools.
- The clamped tool must exhibit a h6 tolerance, be free from damage and scratches and have a minimum length as specified in the technical data.
- Suitable for heavy-duty machining (HPC, TPC).
- Tighten the clamping device only when it is mounted on the assembly jig and the tool is inserted.
- Use it in the machine tool only when it is correctly tightened.
- For work in industrial environments.
- Use only in an enclosed system with no access from outside.
- Use it only in accordance with the technical data.
- After a collision with other objects, do not use again until a thorough check has been performed.
- Use only when it is technically in good condition and safe to operate.
Reasonably foreseeable misuse
- Do not clamp workpieces.
- Not to be struck with a hammer.
- Clamp the tool only when the clamping device is installed in the machine.
- Do not make any unauthorised changes or modifications to it.
- Do not use in explosion hazard areas.