BIG Kaiser Higher Precision Guaranteed
View the site en Espaņol
Search the site:
Products >> BIG PLUSŪ >> Mega E Chuck

Mega E Chuck: High Speed End Milling

The Mega E Chuck

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


A product of:


The Mega E Chuck in action

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-PLUSŪ (CAT/BT), HSK and BIG CAPTO

A Variety of Mega E Chucks
BCV40/50 BBT30/40  

CAT Shank
Max 40,000 RPM

BT Shank
Max 40,000 RPM

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

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


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.

notch-free nut prevents

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.

Mega Wrench

Digital Mega Torque Wrench

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

Mega Wrench

Mega E Perfect Seal Standard Coolant without Mega E Perfect Seal
Perfect Seal
Standard Coolant Standard Coolant

Max Coolant Pressure 1,000PSI

Slit-Through Coolant

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

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

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




Mega E Collet

Mega E Collet:

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

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.