“BBN” model is a machine for cutting from solid and external grinding of all thread types – metric, withwort, trapezoidal, saw-tooth, round, special, etc. Beside this, ±40° swiveling angle of A-axis enables grinding of different worm profiles, taps, slots. It is suitable for flexible and mass production. The model classification is done based on distance between centers – 500, 700, 1000, 1600 mm. External thread diameter range is from Ø1 – Ø300 mm, while the smallest pitch is 0,2 mm. The maximum external grinding wheel diameter is Ø400 mm and thread grinding length up to 1200 mm.

It is available in CNC option only. Basic customization is related to turret wheelhead – B-Axis, with additional equipment according to the grinding requirement, primary in one set up. A combination of spindles for external and high-frequency spindles for internal grinding. The advantage of this machine model is that there is a possibility to install 4 grinding spindles, where different combinations of cylindrical and thread grinding can be performed. Various wheeldresser types provides single- and multi-rib grinding, with constant and variable thread pitch. Software package for thread grinding facilitates the operator’s work, with the use of a customized graphic interface, for easier adjustment of program parameters.