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Haas Multigrind’s CB XL grinding machine has much of the same structural design as the company’s flagship CB model, but with an elongated X axis and machine table to accommodate complete grinding of larger workpieces. Such parts include hob cutters, broaches, geared shafts, cutting rotors, winch drives, and landing gear and turbine engine components, among others. 

The CB XL’s symmetrical design is said to maintain stability and rigidity, regardless of part length. The effects of thermal growth are minimized because the grinding contact point is always in the center of the box frame. The axis configuration reduces unwanted transitions or vibrations. The mineral cast bed and high-precision linear drive in the machine table help to ensure stable processes and repeatable grinding results, the company says. 

The grinding machine is available in four incremental lengths for workpieces ranging from 1,400 to 3,200 mm in length. The modular design also includes options for table extensions, which can be configured for the specific requirements of individual customers and applications.

The direct-drive, water-cooled grinding spindles offer drive power ranging to 50 kW (67 hp) and spindle speeds ranging to 12,000 rpm. The HSK 80 E interface speeds precise and repeatable automatic wheel change. The standard tool magazine carries up to 15 wheels, but the company also offers a shelf tool magazine with space for 65 300-mm grinding wheels and as many as 20 coolant nozzle sets.