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| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Cooling lubricant | yes | |
| Manufacturer’s designation | HiRunER Präzisions-ER-Spannzangenfutter | |
| Holder type | iSO taper | |
| Interface coding | SKG0300x702 | |
| Holder shape | MAS BT | |
| Holder version | dimensionless nominal size without cooling | |
| Holder size, no dimensions | 30 | |
| Type of mounting | hole (internal mounting) | |
| Shank length LS | 60 mm | |
| Interface on machine side | BT 30 | |
| With flat surface contact | yes | |
| Distance a | 46 mm | |
| Min. clamping diameter D1 | 0,5 mm | |
| Max. clamping diameter D1 | 10 mm | |
| For collet type | ER collet | |
| Collet size | 16 | |
| Gauge length A | 60 mm | |
| Concentricity | 3 µm | |
| Balance quality G at rotational speed | g 2.5 at 25,000 rpm | |
| Machining strategy | HPC; HSC | |
| Interface | joint 1; joint 2 | |
| Type of product | collet chucks | |
| Overall length L | 108,4 mm | |
| Overall height H1 | 34 mm | |
| Overall width B1 | 34 mm | |
| Standard | ISO 7388-2; JIS B6339 | |
| Shape | ADB | |
| With hole for RFID data carrier | yes | |
| Through-coolant available | no | |
| Material | heat-treatable steel | |
| Content | 1 pcs. |
| Référence article | 302839 16 | |
| EAN / GTIN | 4045197870018 | |
| Réf. fabricant | 302839 16 | |
| Fabricant/personne responsable | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Deutschland, www.hoffmann-group.com |