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Manufacturer number:
Cat. No.:
Precision ER collet chuck CENTRO P, SK 40 A = 70, Type CP for ER: 32AD
Article no.: 538944
Catalog no.: 300687
Article code:
Product details
Technical Data
| Through-coolant | yes | |
| Entry of cooling lubricant | with cooling lubricant entry, axially concentric | |
| Escape of cooling lubricant | with cooling lubricant exit, axially concentric | |
| Cooling lubricant | yes | |
| Series | Centro P | |
| Manufacturer’s designation | Präzisions-ER-Spannzangenfutter CENTRO P | |
| Interface position | on the machine; on the workpiece | |
| Holder type | ISO taper; collet taper | |
| Interface coding | SKG04001195; SZD03200195 | |
| Holder shape | steep taper DIN ISO 7388-1; collet taper adjustment angle 8° | |
| Holder version | dimensionless nominal size with cooling; dimensionless nominal size with cooling | |
| Holder size, no dimensions | 40; 32 | |
| Type of mounting | spigot; hole (internal mounting) | |
| Interface on machine side | SK 40 | |
| Min. clamping diameter D1 | 2 mm | |
| Max. clamping diameter D1 | 20 mm | |
| For collet type | ER collet | |
| Collet size | 32 | |
| Gauge length A | 70 mm | |
| External diameter, on the tool side D | 50 mm | |
| Concentricity | 3 µm | |
| Balance quality G at rotational speed | g 2.5 at 25,000 rpm | |
| Machining strategy | HSC | |
| Vibration damping | yes | |
| Thread G; M | M16 | |
| Interface | joint 1; joint 2 | |
| Type of product | collet chucks | |
| Overall length L | 138.46 mm | |
| Standard | ISO 7388-1 | |
| Shape | AD | |
| With thread | yes | |
| With hole for RFID data carrier | yes | |
| Through-coolant available | yes | |
| Material | steel | |
| Surface treatment | ground | |
| Content | 1 pcs. |
Identification & Classification
| Article number | 538944 | |
| Catalog number | 300687 | |
| EAN / GTIN | 2050001719553 | |
| Manufacturer number | 44615000700 | |
| Article class | 33F | |
| Manufacturer/responsible person | Eugen Fahrion GmbH & Co. KG Präzisions-Spannwerkze, Forststraße 54, 73667 Kaisersbach, Germany, www.fahrion.de |
Description
Version:
- Taper ground internally and externally 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. Taper ground internally and externally. Ball-bearing clamping nut with trapezoidal-shaped fine thread for optimum tightening torques and clamping forces, reduces vibrations that occur.
- 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.
- Alternatively for CENTRO P -> without seals, with ER clamping nut CP No. 309655 or sealed system with ER clamping nut CP for HP sealing rings No. 309665 in conjunction with HP sealing rings No. 309666 − 309668 (for internal coolant supply or as a dirt trap).
Advantage:
Patented optimum seating of the collet, double guides, trapezoidal thread and low-friction coated 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.
Supplied with:
Without clamping nut.
Optional extras:
Pull studs (PS) No. 308600 – 308806, PS wrenches No. 308820 – 308835, precision ER collets for HP No. 309368 - 309381 and for taps No. 309402 − 309419 (not for Holex). ER clamping nuts CP No. 309655; 309665, ER clamping nut HDC No. 309657, HP sealing rings No. 309666 − 309668, CP roller bearing wrench No. 309754; 309756, HDC roller bearing wrench No. 309745; 309756.
Note:
- Clamps only nominal ⌀ up to shank ⌀ tolerance h10.
- Use in combination with Fahrion collets.