TENDO Slim 4ax

The world‘s first hydraulic expansion toolholder with standardized heat shrinking contour

The SCHUNK TENDO Slim 4ax is the toolholder for axial machining. It is the only one of its class which meets every requirement: heat shrinking contour, easy handling, short set-up time, long tool life, high flexibility, Plug & Work, and can be used with minimum quantity lubrication.

World premiere!

Slim heat shrinking contours on the outside – clever hydraulic expansion technology on the inside! With the SCHUNK TENDO Slim 4ax it was possible for the first time to combine the complete outside geometry of heat shrinking mountings with the proven qualities of the SCHUNK hydraulic expansion technology which has been proven thousands of times. The slim precision mounting makes it ideal for axial machining at high precision and has excellent vibration damping. In the automotive industry the SCHUNK TENDO Slim 4ax can replace heat shrinking mountings in existing processes by Plug & Work without having to reprogram the machine.

Easy exchange via Plug & Work

As with every SCHUNK TENDO hydraulic expansion toolholder, the TENDO Slim 4ax also has permanently high runout accuracies, perfect vibration damping, and a fast tool change with a wrench. Even narrow shape and position tolerances can be met precisely, therefore investments in high-priced peripheral devices are not required.

Since the precision mounting can replace conventional heat shrinking toolholders by Plug & Work without having to reprogram the machine, their advantage can be directly tested in a real application or can be permanently used. Initially the SCHUNK TENDO Slim 4ax is available for the HSK-A 63 interface. Further interfaces and sizes are planned.

Product details

  • Plug & Work

    1:1 interchangeable. Insert an hydraulic expansion toolholder - replace a heat shrinking toolholder.

  • High radial rigidity

    For optimum shape accuracy. A robust base body avoids lateral deflection during the machining process.

  • Excellent vibration damping

    The hydraulic system ensures a high surfacefinish, the machine spindle‘s performance is enhanced, the tool service live is increased and costs are reduced.

  • Best surface qualities

    due to top vibration damping for best surface qualities without chatter marks.

  • HSC/HPC-machining

    At a balancing grade of G2.5 at 25,000 rpm, suitable for high speeds.

  • Fast tool change

    micron precise without peripheral equipment. Turn to dead stop.



  • The ultimate for axial machining

    Drilling, countersinking, reaming and threading in a 5-axis center and the die and mold making industry.

  • < 0,003 mm

    Run-out and repeat accuracy ensure best surface results.

  • High Flexibility

    due to the use of intermediate sleeves.

  • Maintenance-free

    Completely enclosed system. Maintenance-free and long service life.

  • Made in Germany

    In the city of Lauffen, home of Friedrich Hölderlin.

Sectional diagram

  1. Oil chamber
  2.  Expansion sleeve
  3.  Base body
  4.  Length adjustment screw
  5.  Dirt groove

Benefit from the enormous advantages of the TENDO Slim 4ax in series production, too:

  • Heat shrinking contour according to DIN 69882-8
  • Plug & Work: Replace a heat shrinking toolholder 1:1 without changing the process. Ready for immediate use!
  • Easy handling
  • Short set-up times
  • Longer tool life
  • High degree of flexibility
  • Useable with minimum quantity lubrication

Product details

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Highlights Clamping Technology (PDF, 12 MB)
Brochure TENDO Slime 4ax (PDF, 4.7 MB)
Contact person

Area sales managers


Direct, personal contact is the first step towards completing projects fast and successfully
Responsible area sales manager

Service and support


Your direct contact Tel. +1-800-772-4865 
Service overview