Schunk's Tendo Slim 4ax Now Available with Coolant-Through

Schunk now offers a version of its Tendo Slim 4ax with Cool-Flow coolant-through technology. 


Facebook Share Icon LinkedIn Share Icon Twitter Share Icon Share by EMail icon Print Icon
Schunk Tendo Slim 4ax Cool-Flow


Schunk now offers a version of its Tendo Slim 4ax with Cool-Flow coolant-through technology. The Tendo Slim 4ax Cool-Flow toolholder offers various advantages when it comes to machining of steel, aluminum and plastic, the company says. The coolant or water jet does not depend on the unclamped length and adapts to the metalcutting process. In contrast to heat-shrinking mountings, the Tendo’s coolant jet does not bounce back along the whole unclamped length of the tool shank, but instead fully surrounds the tool shank up to the cutting edge. This is a benefit for cooling the cutting edge, improving chip removal and increasing efficiency of the overall process.

The hydraulic-expansion toolholder offers precise runout accuracy of under 0.003 mm at an unclamped length of 2.5×D and a balancing grade of G 2.5 at 25,000 rpm. Shape and positional tolerances can be met precisely, the company says. Schunk adds that the Tendo Slim 4ax can replace heat-shrinking toolholders without having to reprogram the outside contour.

For HSK-A63 interfaces between 6 and 32 mm in diameter, the toolholder is available in lengths ranging from 90 to 120 mm. Toolholders for SK 40 interfaces between 6 and 32 mm in diameter will be available later in 2020, with other interfaces and length variants being planned.


  • Quick-Change Tooling Improves Swiss Lathe Profits

    Horn USA has developed quick-change tooling systems to drastically reduce set-up and toolchange times for Swiss-type lathes, including those with through coolant.

  • The Humble Pull Stud

    I’ve said that the toolholder is the least appreciated element in many milling processes, but the pull stud (or retention knob) is perhaps the least appreciated component of the toolholder.

  • Too Small To Touch

    Hummingbird takes on machining work that is too small for most shops to handle. In fact, Hummingbird tries not to handle it either. To accurately machine the tiniest parts, this shop relies on processes that are as hands-off as possible.