KX TWIN series

gear center

machine concept

The generating gear grinding machines KX 160 TWIN and KX 260 TWIN are designed on a shared modular machine platform with features specifically for continuous generating grinding with dressable tools. The short set-up times are especially worth emphasising in this efficient machine concept.

The machines of the KX TWIN type are particularly designed for medium and large batch production of gears and shafts where quality levels are especially demanding.

The generating gear grinding machine includes two identical workpiece spindles, arranged at opposing sides of an index table. While machining one part, the second workpiece spindle simultaneously loads / unloads and aligns another part. Thus, many of the auxiliary functions are carried out during the machining time, cutting the auxiliary processing time to a minimum.

A total of ten NC axes align the gear wheel with the tool and perform the necessary linear and rotary motions during grinding. The index table and both tailstocks are designed as NC axes. The workpiece spindle and tool spindle are directly driven.

The design of these machines includes an integrated single spindle dresser for conventional grinding worms. Mounted staggered to the workpiece spindles, the dressing unit is assembled on the tailstock column, too.

For the dressing process the profile dressing unit is aligned with the tool by turning the tailstock column.

control and software

The control system Sinumerik 840D sl is equipped with an operator-friendly menu-driven user interface, developed by KAPP NILES to match the specific machining requirements.

measuring system

The optional measuring device allows to measure and to evaluate gear qualities against specifications. This functionality is mainly used to optimise the set-up processes in the machine, particularly in order to eliminate non-operational periods due to external measuring processes as far as possible. Alternatively, random samples can be tested during processing.


The machines are optimised for automatic loading. As a standardised turnkey solution, a combination of pallet conveyer and gantry loader is provided according to the specific application. Alternative automation methods, such as pallet or robot systems can also be utilised.

tip diameter [mm]
max. workpiece length [mm] module range
max. face width [mm] max. helix angle [deg]
KX 160 TWIN 170 770 0.5 - 4.5 320 (520) ± 45
KX 260 TWIN 260 770 0.5 - 5.0 320 (520) ± 45