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Shrinkfit holders

Shrinkfit holders combine very low run-out (max. 3µ at 3xD), holding strength, rigidity and fine balancing, which makes them an important 'high speed machining' solution for all kinds of applications: milling, drilling, reaming... from rough machining to precise finishing.

A Shrinkfit tool holder works in conjunction with a specialised heater e.g. EasyShrink®. The bore in which the tool locates is slightly undersized compared to the tool shank. Heating the holder expands this bore, allowing the tool to be inserted. As the holder cools, the bore shrinks around the tool to create a concentric and rigid clamping. Run-out 3µ max. at 3xD. Bore size dia. 3 mm to 32 mm.

As a pioneer in the Shrinkfit technology, Seco has developed a considerable knowledge in this area and is able to offer one of the widest range of Shrinkfit holders on the market:

  • DIN type shrinkfit holders, type 'EPB 5603': designed according to the DIN 69882-8 norm, the 5603 type Shrinkfit holders are the most commonly used on the market. Characterised by their 4.5° nose angle, an internal thread for a stop end screw and four threaded holes for balancing screws, this type will cover most needs.
  • Mould&die Shrinkfit holders, type 'EPB 5801': developed for Mould&Die applications, these slim Shrinkfit holders are featured with a reinforced 5°/3° to machine difficult-to-reach parts on workpieces.
  • Cylindrical type Shrinkfit holders, type 'EPB 5800': their cylindrical, strong external shape make them a first choice when it comes to heavy duty applications.
  • Reinforced Shrinkfit holders, type 'EPB 5600': their great clamping forces (on average 33% stronger than an equivalent DIN holder) allow high material removal rates with increased depths of cut and higher table feeds. EPB 5600 Reinforced Shrinkfit holders from dia. 12mm may also feature the Safe-Lock™ tool pull-out protection system as an option, ideal for HPC and difficult-to-machine materials.