TRBHSK32A SCHUNK Polygonal tool chucks TRIBOS-S with HSK32A shank DIN ISO 12164-1 for machining in small footprint, clamping diameter of your choice
(Incl. Tax: €406.81)
SCHUNK TRIBOS-S HSK-A32 polygonal toolholders for ultra-precision machining and HSC applications. Backlash-free clamping through elastic deformation with run-out < 0.003 mm. Compatible with h6 shank tools, balanced G2.5 at 25,000 rpm and capable of speeds up to 85,000 rpm. Support coolant supply up to 100 bar and axial length adjustment for maximum accuracy.
SCHUNK TRIBOS-S HSK-A32 polygonal toolholders are designed for ultra-precision machining and high-speed applications where clamping stability and run-out accuracy are critical. The systems use a clamping technology without mechanical moving parts, based on controlled elastic deformation of the internal polygonal bore.
During clamping, using dedicated TRIBOS SVP devices, the polygonal profile is temporarily deformed into a circular shape, allowing tool insertion. Once the pressure is released, the holders return to their original geometry, ensuring uniform, backlash-free clamping with optimal force distribution.
This principle eliminates cumulative tolerances typical of collet systems, achieving run-out accuracy below 0.003 mm at 2.5 x D with high repeatability. The toolholders are designed for tools with h6 shank tolerance, ensuring reliable torque transmission even under demanding conditions.
Their extremely slim design allows machining in hard-to-reach areas, increasing operational flexibility. The symmetrical and balanced design (G2.5 at 25,000 rpm) enables high-speed applications up to 85,000 rpm, ensuring excellent dynamic stability and surface quality.
The toolholders feature axial length adjustment screws with 10 mm travel for precise presetting and reduced setup times. They are also compatible with reduction sleeves to extend the clamping range.
They support coolant supply up to 100 bar, either peripheral or internal, improving chip evacuation and tool life. The HSK-A32 interface ensures high rigidity and precision connection to the machine spindle.
TRIBOS-S HSK-A 32 – Dimensional technical data
| Size | D₂ [mm] | D₃ [mm] | L [mm] | L₂ [mm] | L₃ [mm] | L₄ [mm] | L₅ [mm] | L₆ [mm] | G | Mmin [Nm] | Weight [kg] |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 9.9 | 13.1 | 65 | 37 | 10 | 35 | 38.2 | 45 | M5 | 5 | 0.19 |
| 8 | 13 | 15.1 | 65 | 37 | 10 | 35 | 39.2 | 45 | M5 | 12 | 0.2 |
| 10 | 16 | 18.1 | 70 | 42 | 10 | 40 | 45.7 | 50 | M5 | 20 | 0.22 |
| 12 | 19 | 21.1 | 75 | 47 | 10 | 45 | 52.2 | 55 | M5 | 30 | 0.24 |
TRIBOS-S HSK-A 32 – Technical features
| Version | Ideal for chip-removal machining operations – radial forces must be taken into account |
| Run-out accuracy | < 0.003 mm at 2.5 x D |
| Balancing grade | G2.5 at 25,000 rpm or Umax < 1 gmm |
| Tool shank quality | h6 |
| Reduction sleeves | Clamping of additional shank diameters with reduction sleeves |
| Data support | Chip seat holes compliant with DIN 69873 |
| Toolholder replacement | For automatic toolholder replacement |
| Axial adjustment screw | With axial length adjustment screw |
| Axial length adjustment | Length adjustment within a precision range of 0.01 mm, with 10 mm adjustment travel |
| Extremely slim design | Precise machining operations, even at workpiece points that are difficult to reach |
| High flexibility | Clamping of different diameters thanks to the use of grooved or sealed intermediate sleeves |
| Lightweight design | Fast feed and speed range up to 85,000 rpm (HSC) |
| Constant run-out and repeatability accuracy | < 0.003 mm |
| Total compatibility | Ideally combinable with TENDO SVL and TRIBOS SVL extensions |
| Excellent vibration damping | Micro blowholes are avoided and better workpiece surfaces are achieved, the machine spindle is protected, tool life is extended and therefore costs are reduced |
| Standard fine balancing | Suitable for high speeds with a balancing grade of G2.5 at 25,000 rpm |
| Symmetrical rotation design | The rotationally symmetrical structure minimizes the interference contour and ensures a high rotational speed |
TRIBOS-S HSK-A 32 – Technology and operating principle
| Product description | Extremely slim polygonal toolholders. Precision for machining conditions in extremely confined spaces. When some workpiece areas are very difficult to reach or common clamping systems reach their limits, the solution is represented by TRIBOS-S polygonal clamping holders with their extremely slim structure.Maximum constant concentricity and repeatability accuracy < 0.003 mm ensure even more uniform cutting edge action, improving tool life by more than four times. |
| Technology | TRIBOS SVP actuation devices deform the polygonal shape of the toolholder until it becomes circular, making tool insertion possible. When pressure is released, the toolholder returns to its original polygonal shape, securely and precisely locking the inserted tool shank. |
| Element 1 | Axial adjustment screw – For easy and fast tool presetting |
| Element 2 | Base body – The machine-side interface is located on the base body |
| Step 1 | Polygonal clamping diameter – By means of TRIBOS SVP devices and the application of the respective actuation pressure, the polygonal clamping diameter of the toolholder deforms and becomes circular. |
| Step 2 | The polygonal clamping diameter takes on a circular shape through actuation pressure, thus facilitating insertion of the tool shank. |
| Step 3 | Insertion of the tool shank – When the pressure exerted on the clamping diameter is reduced, it resumes its original polygonal shape. |
| Step 4 | Tool clamped – The inserted tool shank is locked reliably with high repeatability accuracy. |
TRIBOS-S HSK-A 32 – Dati tecnici dimensionali
| Misura | D₂ [mm] | D₃ [mm] | L [mm] | L₂ [mm] | L₃ [mm] | L₄ [mm] | L₅ [mm] | L₆ [mm] | G | Mmin [Nm] | Peso [kg] |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 9.9 | 13.1 | 65 | 37 | 10 | 35 | 38.2 | 45 | M5 | 5 | 0.19 |
| 8 | 13 | 15.1 | 65 | 37 | 10 | 35 | 39.2 | 45 | M5 | 12 | 0.2 |
| 10 | 16 | 18.1 | 70 | 42 | 10 | 40 | 45.7 | 50 | M5 | 20 | 0.22 |
| 12 | 19 | 21.1 | 75 | 47 | 10 | 45 | 52.2 | 55 | M5 | 30 | 0.24 |
TRIBOS-S HSK-A 32 – Caratteristiche tecniche e vantaggi
| Versione | Ideale per lavorazioni ad asportazione di truciolo – tenere conto delle forze radiali |
| Precisione di run-out | < 0,003 mm a 2,5 x D |
| Grado di bilanciatura | G2,5 a 25.000 rpm o Umax < 1 gmm |
| Gambo utensile di qualità | h6 |
| Bussole di riduzione | Serraggio diametri gambo aggiuntivi con bussole di riduzione |
| Supporto di dati | Fori sede chip conformi alla norma DIN 69873 |
| Sostituzione del portautensili | Per la sostituzione automatica del portautensili |
| Vite di regolazione assiale | Con vite di regolazione della lunghezza assiale |
| Regolazione assiale della lunghezza | Regolazione della lunghezza nel campo di precisione di 0,01 mm, con corsa di regolazione di 10 mm |
| Struttura estremamente sottile | Interventi di lavorazione precisi, anche in punti del pezzo difficili da raggiungere |
| Elevata flessibilità | Serraggio di diversi diametri grazie all'utilizzo di manicotti intermedi scanalati o a tenuta stagna |
| Design leggero | Avanzamento rapido e un intervallo di numeri di giri fino a 85.000 giri/min (HSC) |
| Run-out costante e precisione di ripetibilità | < 0,003 mm |
| Compatibilità totale | Combinabile in modo ideale con le prolunghe TENDO SVL e TRIBOS SVL |
| Assorbimento delle vibrazioni eccellente | Si evitano micro soffiature e si ottengono migliori superfici del pezzo; il mandrino della macchina è protetto, l'utensile prolunga la sua durata e si riducono i costi |
| Bilanciatura fine di serie | Adatto alle alte velocità con un grado di bilanciatura di G2.5 a 25.000 giri/min |
| Design a rotazione simmetrica | La struttura a rotazione simmetrica minimizza il profilo d'ingombro e garantisce un'elevata velocità di rotazione |
TRIBOS-S HSK-A 32 – Tecnologia e principio di funzionamento
| Descrizione prodotto | Portautensili poligonali estremamente sottili per condizioni di lavorazione in spazi molto ridotti, con precisione di concentricità costante e di ripetibilità < 0,003 mm |
| Tecnologia | I dispositivi di attuazione TRIBOS SVP deformano la forma poligonale del portautensile fino a renderla circolare, consentendo l'inserimento dell'utensile; al rilascio della pressione il portautensile ritorna alla forma originaria bloccando il gambo in modo sicuro e preciso |
| Elemento 1 | Vite di regolazione assiale – Per un presetting facile e veloce dell'utensile |
| Elemento 2 | Corpo base – Sul corpo base si trova l'interfaccia lato macchina |
| Fase 1 | Diametro di serraggio poligonale |
| Fase 2 | Il diametro di serraggio poligonale assume una forma circolare mediante pressione di attuazione |
| Fase 3 | Inserimento del gambo dell'utensile |
| Fase 4 | Utensile serrato con elevata precisione di ripetibilità |
- Brand:
- SCHUNK
- Typology:
- Polygonal closure
- Shank Type:
- HSK32A
