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Big Kaiser

BIG Kaiser Precision Tooling Inc., based in Hoffman Estates, IL., was originally established as KPT/Kaiser Precision Tooling, Inc. the U.S. subsidiary of Heinz Kaiser AG, Rümlang, Switzerland in the spring of 1990. Heinz Kaiser AG, is a worldwide leader in the development and manufacture of precision boring tools and modular boring systems of unmatched quality.


Twitter: @BIG_Kaiser


Two thirds of all BIG Kaiser components are made in the United States. Kaiser's most distinctive features are the unsurpassed ruggedness of the rough boring heads, high repeatable precision of the finish boring heads and the patented design of the KA/KAB connection.


In June of 2003, with a significant expansion of its commitment to the North American market, BIG Daishowa Seiki Co. Ltd., a global tooling manufacturer based in Osaka, Japan, formed a new strategic alliance with BIG Kaiser Precision Tooling Inc. To recognize the importance of this new strategic alliance, KPT/Kaiser has been renamed BIG Kaiser Precision Tooling Inc  


For several years, KPT/Kaiser had offered BIG-Plus® KAB tool shanks and other BIG tooling components, manufactured in Japan by BIG Daishowa Seiki. Now, BIG Kaiser Precision Tooling, Inc. has expanded its BIG Daishowa product line with new tooling introduced at JIMTOF 2002, Tokyo, including the new FULLCUT MILL indexable insert milling cutters and other products for the new generation of MTC milling turn centers.

BIG Daishowa Seiki, is one of the world’s leading producers of precision tool holders and measuring accessories, it operates four manufacturing facilities in Japan, one in Osaka and three in Awaji. The company was established in 1967 and now employs more than 500. Heinz Kaiser AG (HKAG) celebrated its 60th anniversary in 2008, and is Europe's leading producer of precision boring tools and modular tool systems. HKAG and its subsidiaries serve manufacturing communities in the global market of more than 30 countries.


Precision tool measurement and presetting systems include:

  • Diaset - The entry level Diaset line of contact digital tool measuring and presetting stations are perfect for basic presetting and measuring needs.
  • Speroni The more technologically advanced Speroniline line of contact digital tool measuring and presetting systems, with non-contact measurement and presetting capabilities utilizing projectors and vision systems are designed for DNC and CIM applications. Speroni tool room management systems are designed to reduce tool management time by putting the right tool in the right place at the right time.

Additional BIG Kaiser products include:

  • Unilock precision universal workholding equipment,
  • Tool Pro tool assembly and maintenance devices, a full line of BIG Kaiser inserts,
  • Sphinx precision solid carbide & High Speed Steel (H.S.S.) drills and micro drills,
  • Lang chip fans as well as
  • Mptec articulated stands and
  • Tekusa spindle cleaners.



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