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Manufacturer number:
Cat. Nr.:
Precision ER collet chuck HDC, HSK-A 63 A = 70, for ER collets: 32
Article no.: 305912 32
Article code:
- Arbor standard: ISO 12164-1; DIN 69893
- Shape: A
- Balance quality G at rotational speed: G 6.3 at 18,000 rpm
- Concentricity ER collet with CP collet chuck: ≤ 6
- Concentricity HP collet with CP collet chuck: ≤ 3
Product details
Technical Data
| for ER collets | 32 | |
| Clamping ⌀ D1 | 2-20 mm | |
| Adapter | HSK-A 63 A = 70 | |
| Arbor standard | ISO 12164-1; DIN 69893 | |
| Shape | A | |
| Balance quality G at rotational speed | G 6.3 at 18,000 rpm | |
| Concentricity ER collet with CP collet chuck | ≤ 6 µm | |
| Concentricity HP collet with CP collet chuck | ≤ 3 µm | |
| Concentricity ER collet with HDC collet chuck | ≤ 6 µm | |
| Concentricity HP collet with HDC collet chuck | ≤ 3 µm | |
| Machining strategy | HSC | |
| Clamping range | 2 mm - 20 mm | |
| Overhang dimension A | 70 mm | |
| External ⌀ D | 53 mm | |
| Type of product | Collet chuck |
Identification & Classification
| Article number | 305912 32 | |
| EAN / GTIN | 2050002068766 | |
| Manufacturer number | 47166300705 | |
| Manufacturer/responsible person | Eugen Fahrion GmbH & Co. KG Präzisions-Spannwerkze, Forststraße 54, 73667 KAISERSBACH, Germany, www.fahrion.de |
Description
Version:
- Ground externally and internally with RFID / Balluffchip bore.
- Concentricity and repetition accuracy 3 μm at 3×D, maximum 50 mm when using a HP precision collet.
- HDC = Heavy Duty Chuck, a mount specially designed for rough machining. A reinforced chuck body ensures better stability and plenty of radial stiffness. Ball-bearing clamping nut with trapezoidal-shaped fine thread for optimum tightening torques and clamping forces reduces vibration.
- Very high clamping forces due to the collet fully seated in the chuck and coated clamping nut.
- Vibration damping due to the element collet and mass of the chuck.
Advantage:
Patented optimum seating of the collet, double guides, trapezoidal fine thread and ball-bearing mounted clamping nut amalgamate when clamped into a sturdy unit, thus ensuring a very high degree of rigidity and precision.
Application:
For high precision clamping of tools with plain shank.
HDC especially well-suited for roughing (including TPC milling) and finishing operations and machining of high-tensile or tough materials.
HDC especially well-suited for roughing (including TPC milling) and finishing operations and machining of high-tensile or tough materials.
Supplied with:
Supplied with ball-bearing clamping nut.
Optional extras:
Coolant pipe No. 309880, socket wrench No. 309890, precision ER collets for HP No. 309368 − 309381, and for taps No. 309402 − 309419 (not for Holex), ER CP clamping nuts No. 309655; 309665, ER HDC clamping nuts No. 309657, HP sealing rings No. 309666 − 309668, CP roller bearing wrenches No. 309754; 309756, HDC roller bearing wrenches No. 309745/309756.
Note:
- Clamps only nominal ⌀ up to shank ⌀ tolerance h10.
- Use in combination with Fahrion collets.
- Not compatible with Centro P clamping nut.