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BIG KAISER Announces Its Fastest Air Power Spindle at 120,000 RPM

BIG KAISER Announces Its Fastest Air Power Spindle at 120,000 RPM                                                                                                                                          

Hoffman Estates, IL – BIG KAISER is introducing the RBX12 Air Power Spindle, a high-speed air-driven spindle that achieves an impressive variable rotational speed of 100,000-120,000 RPM.

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The newest air-driven spindle, produced by BIG Daishowa Seiki, enables existing machines to be cost-effectively upgraded to perform high-speed micro-machining in a normal machining center since this tool is driven by air supplied through a stop block or through the machine spindle. Since there is no rotation of the machining center spindle required, your expensive machine tool spindle can be used without wear.

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Operating at such high speeds helps to improve machining accuracy, enhance surface finish, significantly lengthen tool life, as well as reduce wear on the cutting tool since it will be running at the speeds intended.

High-speed operation also means that processing time can be reduced. In various trials, the RBX12 was able to reduce machining time by more than 300% because of higher rotational speed.

Due to its ceramic ball bearings and ultra-precise collet system, the runout accuracy of the RBX12 is excellent, which enables ultra-thin wall cutting. The AA-grade Mega Micro Collet guarantees 1-micron runout at the collet nose, and the .004” collapsibility assures a near-perfect concentric clamping of a micro-tool shank.

The RBX12 also minimizes thermal displacement in the Z-axis for top precision – constant at <.001mm while a standard machining center spindles have up to .012mm.

“For micro-machining applications, the new RBX12 means that companies can get the most out of their existing equipment, achieving ultra-high levels of precision and speed,” says Jack Burley, VP Sales & Engineering for BIG KAISER.

The RBX12 is available with BCV40, BBT30/40 & HSK-A63/F63/E32 interfaces, and models not requiring a stop block have an extremely small body diameter of Ø32mm (Ø1.260”). For further cost savings, automatic tool change is possible.

BIG KAISER is a worldwide leader in high precision tooling systems and solutions for the metalcutting industry that guarantee extreme accuracy and repeatability. Our products are of the utmost quality — manufactured with materials and craftsmanship that enable superior performance. As a member of the BIG DAISHOWA Group (Osaka, Japan), BIG KAISER has grown into a well-recognized global manufacturer, with corporate headquarters in North America, Europe and Asia.


For more information, contact BIG KAISER, Hoffman Estates, IL at 224-770-2999, e-mail or visit

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