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New manufacturing technologies for new vehicle technologies


No other product is currently as affected by technological change as the automobile and all of its components. Even brake discs are subject to new requirements that must be accommodated by production technology.

Minimizing particulate matter

A significant part of the particulate matter caused by automobiles is due to brake wear, be it from the brake pads or brake discs. Brake discs are produced more wear-resistant, and the friction surfaces are provided with special hard material coatings in order to minimize particulate matter pollution.

Corrosion prevention

While EVs are also fitted with disc brakes, they are rarely used. But their surfaces are exposed to the same weather conditions as those of conventional vehicle brakes. So rust can build up relatively quickly. This is prevented through special coatings that diffuse into the cast. Grinding is subsequently required.

Higher efficiency through lower mass

Brake discs made of carbon ceramic weigh only about 10% of the weight of a cast brake disc and still have better wear and braking characteristics. These types of brake discs can also be processed on the DVS UGrind DD/DDV.

Grinding cast brake discs

Grinding conventional cast brake discs offers a number of advantages over customary lathe machining. Due to the very low wear of the grinding wheels, the tool costs are much lower, while yielding much higher precision and up to 99% contact area on the friction surfaces.


Machining of extremely hard coatings, such as tungsten carbide, aluminum oxide, chromium carbide


Low tool costs thanks to the long service life of DVS grinding wheels


Quick-change chucks for automated operation


Upstream automation and integration into complete production lines possible


Tight tolerances for axial run-out and parallelism as well as high contact area


Greater efficiency and precision when grinding cast brake discs compared to turning

The basis of the UGrind 800 DD

  • Same basis as the UGrind800
  • Two grinding supporters on the dovetail
  • The workpiece is clamped on the multifunction head or on a spindle and moves to the grinding supports
  • Automatic loading of the panes by robot possible

  • Machining on both sides

  • Machining of the friction ring surfaces on both sides in one clamping operation
  • All shape and position tolerances match each other
  • The counter-rotating movement of the grinding wheels achieves a cross-grinding, which is a quality feature for perfect flatness
  • Time saving -> increase in productivity due to double-sided processing

  • Plane-parallel grinding of brake discs

  • Through two grinding supports
  • The grinding supports are movable and have a high-performance spindle
  • Grinding wheel diameter from 350mm - 400mm possible
  • Tensioning of the brake disc during machining with the same tightening force as on the car

  • Powerful drive thanks to powerful workpiece spindle

  • More powerful spindle replaces multifunctional head
  • Dressing/sharpening on cylinder between the two grinding supports
  • The measuring station is located on the right-hand grinding support
  • The variant with the more powerful spindle is especially suitable for hard-coated brake discs

  • Video: Get inspired
    Technical specification*

    Workpiece diameter min./max. in mm:


    Workpiece thickness max. in mm:


    Workpiece weight max. in kg:


    Workpiece spindle speed in rpm:


    Travel distance X in mm:


    Travel distance Z in mm:



    Bosch Rexroth MTX standard CML 75.1

    Optional accessories:

    Custom automation solutions, external coolant preparation, chucks, adapted to the relevant brake disc type with bayonet quick-release lock


    Double-sided surface grinding of brake discs: with hard material coating (e.g., tungsten carbide, chrome carbide, aluminum oxide, silicon carbide) made of carbon ceramic, with corrosion protection coating made of cast iron

    Machine design/structure:

    Sloped machine bed with two grinding spindles that can be moved in the Z-direction, workpiece spindle movable in Z- and X-direction


    Cross slide with X-axis (servo motor + KGT) and Z1-axis (linear motor, optional KGT), Z2 and Z3-axes (servo motor + KGT), workpiece and tool spindles implemented as motor spindles

    *Different workpiece geometries require more individual machine designs. For this reason, the technical data given here serve as a guide, but may deviate from reality in individual cases.


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