What is BIG-PLUS?
BIG-PLUS is a patented spindle system that provides dual contact between the spindle face and the flange face of BIG-PLUS tooling. Simply by switching holders, you can greatly increase tool rigidity, reduce runout and add significant productivity to your machining applications. BIG-PLUS holders and spindles are manufactured to micron level specifications.

The unique tool holding technology increases surface contact with the tool holder, maximizing rigidity and clamping pressure. There is a significant advantage in tool life, accuracy and cutting capability when compared to standard tool holders. Because of the unique design, the system allows complete interchangeability between existing tooling and spindle systems.  No shim kits or spindle face qualification is necessary.

Big Kaiser


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Current Spindle Type (check all that apply)

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Cast Iron
Stainless Steel High Temp Alloys

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Do You Have Machines with a BIG-PLUS Spindle?


The Benefits of BIG-PLUS Do Not Stop There.

When used with a BIG-PLUS Spindle, there is the additional benefit of contact between both taper and flange of the holder and spindle. This Dual Conact design further improves rigidity and accuracy, eliminating fluctuations in z-axis precision due to tool draw.


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There is a Good Chance Your Spindle is Already BIG-PLUS

Whether you requested it or not, your machine may have a BIG-PLUS spindle. BIG Daishowa developed one of the world’s most adopted OEM specifications in BT and CAT spindle design. As a result, BIG-PLUS spindles are often standard equipment on machines ordered with a CAT or BT interface. While this spindle works with all CAT or BT holders, there is a distinct performance advantage when used with BIG-PLUS tool holders.

Dual Contact Does Not = BIG-PLUS

Other manufacturers reverse-engineer dual contact tooling. But to function properly, the precision in the manufacturing of the tool must be absolute – requiring extremely advanced, temperature controlled processes. The ONLY way to guarantee that you are purchasing a product that has been engineered to the exact design specification of the spindle manufacturer is to look for the BIG-PLUS trademark on the tool itself. This indicates it is a licensed product and meets stringent specifications.

Fullcut Mill
The integral design of the BIG Kaiser Fullcut Mill means that the body of the holder and tool shank are machined from a single piece of high-strength tool steel for ultimate rigidity. Indexable insert versions for BIG-PLUS BT and CAT, as well as HSK and Capto. The Fullcut Mill has proven to increase productivity up to 500% over competitive products in certain applications.

 

 

 

 

Better Advice for: BT, CAT, Capto, HSK & BIG-PLUS

At BIG Kaiser we have premium quality holders and tools for all primary spindle types. Because of this, we have unique experience and objectivity to help you find the ideal tooling set-up for your application. We also offer a wide variety of modular solutions, accessories and adapters to help you get more capability out of your existing machines – and we have the expertise to help you put them to work.

Let us evaluate your application for BIG-PLUS and configure a set-up to deliver Higher Performance – Guaranteed.

Looking for more information on HSK, BT, CAPTO and CAT BIG Kaiser Products?

Download the BIG-PLUS product catalog.

Our products deliver measurable performance advantages for companies specializing in extreme-accuracy and high-efficiency applications. Test us. We’ll improve your most demanding applications, or we’ll take back our products – no charge.