Mega E

High Speed End Milling

The Mega E Chuck utilizes advanced technology to enable high rigidity, high precision, high speed end milling.

Mega E

For Light Duty Precision Finish Milling

For Light Duty Precision Finish Milling

  • Exclusively designed for high speed end milling
  • The substantial body design enhances rigidity to prevent chatter and deflection

  • Coolant bores in accordance to DIN69871/Form B
  • Available in BIG-PLUS® (CAT/BT), HSK and BIG CAPTO

A Variety of Mega E Chucks

Max 40,000 RPM

Clamping Range Dia.: .125"-.500"
Gauge Length: 3.00"-8.00"

Max 40,000 RPM

Clamping Range Dia.: .125"-.500"
Gauge Length: 1.97"-7.87"


Clamping Range Dia.: .125"-.500"
Gauge Length: 2.165"-4.724"

HSK Form A
A40, A50, A63
Max 35,000 RPM

Clamping Range Dia.: .125"-.500"
Gauge Length: 2.36"-5.31"

HSK Form F
Max 30,000 RPM

Clamping Range Dia.: .125"-.500"
Gauge Length: 2.56"-5.31"

Original Design of Notch-free Nut Prevents Vibration and Noise

Vibration at high speeds is eliminated by a notch-free nut which offers superior balance and concentricity. This ideal nut design not only eliminates whistling noise and coolant splattering, but also assures increased strength of the nut itself.



Easy and Firm Clamping with the Mega Wrench

The Mega Wrench has a uniquely designed one way clutch
system with a roller bearing and ratchet function and is capable of safely and evenly applying force on the entire nut periphery.



Digital Mega Torque Wrench

Digital Mega Torque Wrench is used for the secure and appropriate tightening of collet chuck nuts to their recommended values.


Plug Screw for flange through coolant


This Plug Screw A (option) prevents coolant leakage through retention knobs.

Bores on Form B are sealed with Plug Screw B.

  • Remove Plug Screws B (2 pcs.) from end face of flange.
  • Failure to use the Plug Screw "A" or other sealing method may result in coolant contamination of the spindle and lead to premature failure or accidents.

Plug Screw for flange through coolant

Powerful Clamping Force


Shallow taper and extended clamping length enhances the clamping and self-centering forces for stable performance. Use only a cutting tool shank with exactly the same diameter as collet bore diameter. The tolerance of the cutting tool shank must be within h7.


Mega E Collet:

Mega E Collet: End mills
Collet class: AA
Inch Clamping: .125 - .500
Metric Clamping: 3mm - 12mm


Mega E Perfect Seal


Max Coolant Pressure 1,000PSI

Sealed collet nut for coolant-through tools. Remove the PS Ring to supply coolant to the cutting tool periphery.

Standard Coolant without
Mega E Perfect Seal

Slit-Through Coolant

Coolant and oil mist are securely directed to cutting tool through slits in the collet, greatly extending tool life.