SHOWA TOOL Co., Ltd.

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RELIABLE CLAMPING The clamping system (which cannot be over-tightened) is enhanced by the use of a ball screw mechanism with good lubrication.	SLIM DESIGN Reduces the amount of interference with either work-piece or fixturing.	SIMPLE PRESETTING As there is no pullback of cutter when tightening the chuck.	THROUGH-COOLANT The chucks are available in through-coolant form A or B with either DIN, HSK or MAS type shanks.
HIGH CLAMPING POWER Is evenly created over the shank of the tool by our innovative tapered Thrust-Ring design.	HIGH RIGIDITY Our unique Face & Taper contact Thrust-Ring design inherently gives chucks very high levels of rigidity, as the Thrust-Ring and main body of chuck become as one when completely tightened.	MINIMUM 85% TAPER CONTACT IS GUARANTEED To ensure the holders accuracy, while also reducing damage to the machine spindie.	-85°C HEAT TREATMENT To prevent deformation of holder in order to maintain its accuracy and durability.


It is recommended to chuck a cutter directly without use of a collet to obtain the maximum clamping power and highest accuracy. (If a straight collet is used to reduce ID:) ·Runout will be increased to 10–15µm. ·Clamping power will be reduced by 50% or more. SHOWA MICRON CHUCK the best mechanical milling chuck. This world-class mechanical chuck has a higher level of accuracy than available hydraulically operated chucks, coupled with the inherent rigidity and great clamping power of a mechanical chuck ! All of which will help to improve Tool-Life, Surface-Finish, Dimensional Accuracy and Productivity of your Machines ! Structures

Clamping Power & Minimum lnserting Length of Cutter Shank