"ANNIVERSARY" type
MULTI LOCK MILLING CHUCK
It has been 60 years since NIKKEN developed the MULTI-LOCK MILLING CHUCK, NIKKEN's technology has developed the new generation universal chuck. We call this MULTI -LOCK MILLING CHUCK "ANNIVERSARY" type.
Sub-zero Treatment NIKKEN Toolings are all subjected to ultra-low temperature treatment of -90˚C after carburizing, as shown. This treatment removes residual austenite to prevent from deformation for many years. Thus all of our NIKKEN toolings are produced one by one with greatest possible care of NIKKEN spirits.
1 Chucking Torque and Durability 2 Rigidity and Chucking Torque All the NIKKEN MULTI-LOCK Milling Chucks incorporate the multi-roller system including 140% more needle rollers than the other imitations. Besides, the retainer is not made of phosphor bronze but of special steel which will never break. Internal slots together with thickened wall of chuck body ensure no distortion even at heavier milling. Thus, smooth milling work is attained without the vibration or slipping of end mill.
Effects of Internal Slots
Thanks to internal slots, even if oil remains on the end mill shank, there is no decreasing of chucking torque. In case of imitations without slots, chucking torque is largely reduced by oil, causing the shank to slip down.
Imitation roller system
NIKKEN MULTI-ROLLER system
As seen from the cross sectional view, the needle rollers are arranged in perfect order with a dense production, but they are arranged to be scattered in the imitations.
Thick wall and slots provides strong chucking torque and rigidity. Further,slots functions as escape of oil.
Chucking Torque Test Data(C42)
Chain Block
Imitation roller system
NIKKEN MULTI-ROLLER system
When oil is removed completely with thinner
When a little oil is adhered.
%
NIKKEN Others
5,000Nm 3,500Nm
4,800Nm 1,250Nm
With Slots
Only 5 % Down
0
1
2
67%Down
Without Slots
5 3 4
Load Meter
The larger quantity of needle rollers enables the moving of the same load with a small force and less damage on the bearing surface, thus providing a stronger chucking torque without creating even rolling when tightening.
Test Bar
Milling Chuck
9
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