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Manufacturer number:
Cat. No.:
ER collet chuck Form ADB, SK 40 A = 70, for ER collet size: 20
Article no.: 300470 20
Article code:
Product details
Technical Data
| Entry of cooling lubricant | without cooling lubricant entry | |
| Escape of cooling lubricant | without cooling lubricant exit | |
| Cooling lubricant | no | |
| Holder type | iSO taper | |
| Interface coding | SKG04001085 | |
| Holder shape | steep taper DIN ISO 7388-1 | |
| Holder version | dimensionless nominal size without cooling | |
| Holder size, no dimensions | 40 | |
| Type of mounting | spigot | |
| Shank length | 70 mm | |
| Interface on machine side | SK 40 | |
| Min. clamping diameter | 1 mm | |
| Max. clamping diameter | 13 mm | |
| For collet type | ER collet | |
| Collet size | 20 | |
| Gauge length | 70 mm | |
| External diameter, tool-end | 34 mm | |
| External diameter of clamping nut | 34 mm | |
| Height of clamping nut | 19.5 mm | |
| Max. speed | 25,000 min-1 | |
| Concentricity | 3 µm | |
| Balance quality G at rotational speed | g 2.5 at 25,000 rpm | |
| Machining strategy | HSC | |
| Interface | joint 1; joint 2 | |
| Type of product | collet chucks | |
| Overall length | 138.4 mm | |
| Overall height | 34 mm | |
| Overall width | 34 mm | |
| Standard | ISO 7388-1 | |
| Shape | ADB | |
| With hole for RFID data carrier | yes | |
| Through-coolant available | no | |
| Material | heat-treatable steel | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 300470 20 | |
| EAN / GTIN | 4045197762832 | |
| Manufacturer number | 300470 20 | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
Taper ground internally and externally. With Balluff/RFID chip bore.
GARANT −
GARANT −
- Balancing quality G2.5 / 25,000 rpm
- All shanks hard turned (for smooth running!).
- GARANT precision clamping nut, fine balanced (G 2.5 / 25,000 rpm) and coated, giving high clamping force and low wear.
- Through bored.
Application:
For clamping tools with plain shank in collets to DIN 6499 - Form A and B.
Supplied with:
Clamping nut