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Heavy-duty chuck with security function, HSK-A 63, ⌀ D1: 20mm
Article no.: 305550 20
Article code:
Product details
Technical Data
| Through-coolant | yes, with max. 50 bar | |
| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Cooling lubricant | yes | |
| Holder type | hollow shank taper HSK | |
| Holder shape | with central cooling lubricant transfer | |
| Holder version | dimensionless nominal size with cooling | |
| Holder size, no dimensions | 63 | |
| Type of mounting | hole (internal mounting) | |
| Min. clamping diameter | 20 mm | |
| Max. clamping diameter | 20 mm | |
| Gauge length | 86 mm | |
| Body length on machine side | 54 mm | |
| External diameter, tool-end | 50 mm | |
| External diameter of clamping nut | 50 mm | |
| Concentricity | 5 µm | |
| Balance quality G at rotational speed | g 2.5 at 25,000 rpm | |
| Machining strategy | HPC; TPC | |
| Vibration damping | no | |
| Tool pull-out protection | yes | |
| Pendular compensation | no | |
| Incl. length adjustment screw | yes | |
| Maximum clamping force | 900 Nm | |
| With cooling channel bore | yes | |
| Interface | joint 1; joint 2 | |
| Type of product | heavy-duty chucks | |
| Overall length | 118 mm | |
| Overall height | 61 mm | |
| Overall width | 61 mm | |
| Standard | DIN 69893-1; ISO 12164-1 | |
| Shape | A | |
| With width across flats | no | |
| Through-coolant available | yes | |
| Material | heat-treatable steel | |
| Surface treatment | hardened | |
| Weight | 1.5 kg | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 305550 20 | |
| EAN / GTIN | 4062406250454 | |
| Manufacturer number | 305550 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, 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.
Optional extras:
Coolant tube No. 309880.
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.