HSK-E25 Collet Chuck Power Collet Chuck

Certificate of Quality

  • Chuck body fine balanced G2.5 at 25.000 rpm or U < 1 gmm
  • All functional surfaces fine machined
  • More accurate than DIN

Power Collet Chuck
DIN 69893-5 · HSK-E25

For clamping tools with cylindrical shank in HAIMER Power Collets and ER collets according to ISO 15488.

Low cutting forces at highest rpm are characterizing the micro machining (die & mold, medical engineering, micro mechanical engineering). The Power Collet Chuck is the collet chuck for the highest machining capacity in high-speed manufacturing. The optimized design with better construction combines high rigidity with vibration dampening features, giving more protection to machines, spindles and tools. The universal Power Collet Chuck is a unique high performance chuck that can also be used with standard collets. The slim and short design of the all new HSK–E25 series from HAIMER - which is well known from the HAIMER Mini Shrink tool holders – is perfectly suitable for the requirements of micro machining.

  • High runout accuracy: 0.003 mm at 3 × D with HAIMER Power Collets
  • Also for standard collets ER according to ISO 15488 (Please note when use with standard ER collets the gage length A will vary compared to A dimension given below!)
  • High rigidity
  • Smoother running thanks to vibration absorbing geometry, therefore better surface quality and protection of tools, spindles and machines
  • Increased machining capacity due to higher spindle speeds, higher feed rates and larger cutting depths
  • Shorter processing times, higher machining accuracy, high clamping force
  • Equally suited to high-speed manufacturing
  • Included in delivery: Locknut

Technical data subjects to change without prior notice.

Features Power Collet Chuck

The most important features:

  • 1. Low tendency towards vibrations by rigid shank
  • 2. High-precision Power Collet with stabilisation and concentration trough pilot of collet
  • 3. Fine balanced Power Collet ER nut
  • 4. in High-precision Power Collet (optional)
  • 5. High runout accuracy(< 0,003 mm)
Safe-Lock™ for Power Collet Chucks

Safe-Lock™ pull out protection

  • High-precision Power Collets with stabilisation and concentration trough pilot of collet
  • High torque due to form closed clamping
  • No pull out and no spinning ot the tool
  • Groove on tool shank is directed so that the tool will be pulled into the chuck (depending on direction of rotation)
  • Safe-Lock™ starting at ER 25
Cool Jet for Power Collet Chucks

Cool Jet for Power Collets (optional)

  • Optimized coolant bores, aimed at center in der Spannzange
  • Coolant directly to the cutting edge
  • Extended tool life up to 100%
  • Higher reliability of cutting process
  • No more balls of chips on tool

Technical drawing

HSK-E25 Collet Chuck Power Collet Chuck Technical Drawing

Please select your clamping diameter:

Version ER 16
Ø D [mm]28
Clamping range [mm]2,0 - 10,0
L [mm] ultra short31
L [mm] short36
Order No. Gage length A in mm    
E25.025.16.3 HSK-E25 Power Collet Chuck ultra short Piktogramm
ultra short, 45.00 mm
E25.020.16 HSK-E25 Power Collet Chuck short Piktogramm
short, 48.00 mm

Outer geometry equates to Collet Chuck Typ ER
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