Products for Milling Machine Builders

Tool Changing Systems

Tool Changing Systems

For companies building rack style tool changers or for custom applications, we offer standard tool changer components.

Rotary Unions

Rotary Unions

Depending on the type of union, operating speeds ranging from 3,000 to 30,000 rpm with pressures up to 3,000 psi are possible. A number of models also have the capability to run dry if required. Custom-designed unions are also available.

In addition to a standard product line, we also offer rotary unions that are interchangeable with common rotary union products used in the machine tool industry. High quality and long service life make our rotary unions an excellent replacement part choice.

We provide application-engineering services for rotary unions and stock common replacement unions in Rockford, IL. Contact us for more information.

Hirth Couplings

Hirth Couplings

If you need Hirth couplings or a Hirth coupling-style product, please send a drawing or ask us for a brochure, which shows dimensions for standard sizes, calculation formulas for sizing, and information about the manufacturing process. Delivery time is fast, many standard sizes are available from stock, the quality is excellent, and we believe our prices are unbeatable!

We manufacture standard Hirth couplings in all diameters from 50 to 1,000 mm, and with 24 to 720 teeth (depending on the diameter).

Need custom couplings? Not a problem! We routinely manufacture custom pieces per customer drawings, including 3 piece couplings and diameters up to 1,150 mm. All couplings come with a certificate of dimension specifics for your records. If you need Hirth couplings or a Hirth coupling-style product, please send a drawing or refer to the dimensions for standard sizes on datasheet 330.110. Contact us for additional information on calculating formulas for sizing -- we can help with any of your Hirth coupling questions.

Hydrostatic Systems

Hydrostatic Systems


Hyprostatik Logo

The Hyprostatik PM-Flow Controller and hydrostatic components have been implemented in over 4,000 varied types of precision machine tools and components.

Cooling and Filtering

Cooling and Filtering

Due to continuous development of our products in the fields of cooling and filtering technology, BKW/KUMA has become a reliable partner of trade and industry.

Machine Tool Gauges

Machine Tool Gauges

TAC Rockford offers the world's largest variety of gauges and preventive maintenance tools for the machine tool industry for steep taper, HSK, Capto, KM, and Morse tapers. In addition, we offer several gauges for turning centers and lathes.

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