HIGH PRECISION T O O L H O L D E R S Reduce Costs by maximizing tool life with High Precision toolholders

Tooling system of highest quality Based on superior technologies and state-of-the-art production facilities, we guarantee to offer "high precision" and "high quality" tooling to your satisfaction. Through our activities as a specialized manufacturer of tooling since 1967, BIG Daishowa has the distinction of having the highest market share in Japan and we continue to increase the number of our customers in the world-wide market and gain their trust. We devote ourselves to the development of new products and continuously improve quality "to comply with the latest trends". We are confident that...

Accurate inspection under strictly controlled quality standards.

Ultra slim design eliminates any interference Most reliable high precision collet chuck in the world Original and exclusive design for small endmilling Specialist for heavy-duty cutting Clamping Range : ø16 - ø50 Features : P8 Most reliable high precision collet chuck in the world Clamping Range : ø0.25 - ø20 Features : P9 Clamping Range : ø16 - ø42 Features : P10 HYDRAULIC CHUCK For high precision machining in Automotive, Aerospace, Medical and Die & Mold High precision design for heavy cutting Side lock holder for Mold Making

MEGA SYNCHRO Tapping holder SIDE LOCK HOLDER SIDE CUTTER ARBOR MORSE TAPER HOLDER FACE MILL ARBOR Eliminates chatter for smoother finish ANGLE HEAD Hi-JET HOLDER HIGH SPINDLE Blowing air cleans the BIG-PLUS machine spindle face

MILLTURN TOOLING The modular tooling system for turning and rotating tool holder applications Polygon-tapered dual contact system HSK-T SERIES For improved efficiency and reliability of production on NC lathe OTHER TOOLS Ideal for mounting or removing cutting tools and retention knobs Horizontal type to enable to clamp in either right or left side For tightening clamping nuts of cylindrical shank toolholders 2-way clutch holds HSK and CAPTO toolholders securely from rotating Easy cleaning by simply inserting and removing Easy cleaning of oil or particles from the machine spindle Maintain accuracy...

POINT MASTER SERIES POINT CENTER BASE MASTER SERIES Tool offset sensors Touch probe & edge finder Position detecting tool TOOL MASTER ACCU CENTER Edge finder Tool offset sensor For maintenance of machine tool spindle DYNA TEST TOOL PRESETTER DYNA FORCE Precision measuring tools of the highest quality for machine tool maintenance LEVEL MASTER 2-axis simultaneous detection leveler

FULLCUT MILL CONTACT GRIP Threaded coupling with taper face contact Endmill with low cutting resistance for ramping and helical interporation Shoulder and slot milling cutter with both high radial and axial rake angle SPEED FINISER C-CUTTER MINI BBT, HSK, CAPTO SHANK Head Ultra High Feed Chamfer Mill Extensive chamfering range High speed cutter for aluminum and cast iron Features : P21 Back spot facing tool for cap screw hole Automated R-chamfering

BBT/BT SHANK BDV/DV SHANK CYLINDRICAL SHANK MILLTURN TOOLING MEASURING TOOLS CUTTING TOOLS

BIG-PLUS surpasses all other spindle concepts while offering interchangeability with existing machines and toolholders. Improved surface finish & dimensional accuracy Extended tool life Elimination of Z-axial movement at high speeds Prevention of fretting corrosion caused by heavy cutting Improved roundness of boring operation Basic Concept A conventional steep taper toolholder is supported on a reference diameter called the gauge face. On the contrary, a BIG-PLUS toolholder is supported on the flange face, which brings remarkable improvement to rigidity. INCREASED CONTACT DIAMETER (Example of...

Improvement of ATC Repeatability The BIG-PLUS System assures the highest precision location of the toolholder in the spindle when using the ATC for loading tools, as a result of the dual contact which precisely positions the toolholder within 1 micron. TEST BAR PULLING FORCE (ZERO RUNOUT) 800kg Taper Contact (Conventional) Dual Contact (BIG-PLUS) Note: Horizontal machine (4 years old) was used for the test. Minimized Deflection For Maximum Machining Accuracy & Superior Finish With BIG-PLUS simultaneous contact, machining rigidity is greatly enhanced due to the larger contact diameter of the toolholder...

Selected materials and strict control of dimensional accuracy for the optimum quality. Wide range of standard holders to meet all production requirements. HSK form A HSK form E HSK form F Premium Material Selection Since HSK is a hollow taper shank, the material has a critical role for optimum performance. BIG uses carefully selected high grade alloy steels. Particularly, BIG uses die steel materials for HSK 40 and smaller where the cross section of shank taper is very thin. HSK Shanks according to Form A are designed to carry out torque transmission by the round shaped key-way at the end of...

World's original Wide variety of collets and chuck bodies to cover all hight speed ultra precision machining applications. HSK Shank C1 CYLINDRICAL D1 Shank Precision ground and balanced for high speed machining Notch-free design MEGA NUT prevents vibration and reduces noise MEGA CHUCKs are micro mirror ground finished on all surfaces to assure perfect concentricity for high speed machining. The drive keyway is machined after heat treatment. Vibration at high speeds is eliminated with the use of notch free designed nuts, which offer superior balance and concentricity. This ideal nut design not...

High precision collet chuck system 0.1mm increments for higher precision Extremely slim design of body and nut provides superior balance and concentricity and is ideal for reaching into confined areas. BBT Shank BDV Shank Nut diameter 10, 12 & 14mm Extremely slim design Slim design avoids interference. Ideal for small mold making combining high speed and high precision capability. Full scale High concentricity 100% concentricity inspection. Within 1μm at nose is guaranteed. Collet concentricity Within Within 1μm 3μm Three versions are available Taper Type Collet class Straight Type High precision...