{{ name }}
Article no. {{ combinedCodeWithHighlight }}
Article code:
EAN / GTIN:
Manufacturer number:
Cat. No.:
HiRunER precision ER collet chuck, SK 50 A = 100, for ER collet size: 25
Article no.: 647738
Catalog no.: 300647
Article code:
Click to enlarge image
Click to enlarge image
Collets are not inserted 100 % into standard ER chucks.
Click to enlarge image
HiRunER collets are inserted fully into the chuck, resulting in better retention forces and better concentricity.
Click to enlarge image
Click to enlarge image
Click to enlarge image
Product details
Technical Data
| Entry of cooling lubricant | with cooling lubricant entry, decentrally via collar and axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Interface position | on the machine; on the workpiece | |
| Holder type | ISO taper; collet taper | |
| Interface coding | SKG05001795; SZD02500295 | |
| Holder version | dimensionless nominal size with cooling | |
| Holder size, no dimensions | 50 | |
| Type of mounting | spigot; hole (internal mounting) | |
| Cooling lubricant | yes | |
| Series | HiRunER | |
| Manufacturer’s designation | HiRunER Präzisions-ER-Spannzangenfutter | |
| Interface on machine side | SK 50 | |
| Min. clamping diameter D1 | 1 mm | |
| Max. clamping diameter D1 | 16 mm | |
| For collet type | ER collet | |
| Collet size | 25 | |
| Gauge length A | 100 mm | |
| External diameter, on the tool side D | 44 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 | HPC; HSC | |
| Interface | joint 1; joint 2 | |
| Type of product | collet chucks | |
| Overall length L | 201.75 mm | |
| Overall height H1 | 97.5 mm | |
| Overall width B1 | 97.5 mm | |
| Standard | ISO 7388-1 | |
| Shape | ADB | |
| With hole for RFID data carrier | yes | |
| Surface treatment | ground | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 647738 | |
| Catalog number | 300647 | |
| EAN / GTIN | 4045197869906 | |
| Manufacturer number | 300647 25 | |
| Article class | 31A | |
| Manufacturer/responsible person | Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com |
Description
Version:
External and internal tapers are ground. All shanks are hard turned for smooth running. Including RFID/Balluffchip bore, high-performance clamping nut up to 25000 rpm.
Advantage:
- 3 µm radial run-out with a 2 µm clamping nut, 6 µm radial run-out with a 5 µm clamping nut.
- Extremely strong holding force (up to factor 2better than the standard ER chuck).
- Vibration reduction effect due to 2-part clamping nut (size 11M and 16M 1-piece).
Application:
For clamping tools with plain shank in collets to DIN 6499 - Form A and B.
Supplied with:
Precision clamping nut.
Optional extras:
Pull studs (PS) No. 308600 – 308806, PS wrenches No. 308820 – 308835, ER chuck keys No. 309757, 309758 (for 11M and 16M); ER collets Fahrion No. 308901 − 309434. ER collets No. 308901 − 309432, hook spanner No. 628400 or torque wrench No. 309749 or 628520.
Note:
- Clamps only nominal ⌀ up to shank ⌀ tolerance h 10.
- Do not use the clamping nut in combination with a sealing washer.
- Use in combination with Fahrion collets.
- The blue design ring must be removed for Fahrion HP 2μm ER collets.
Use the precision collet chuck always in conjunction with the precision clamping nut No. 309617.