A member of the UNITED GRINDING Group A-AXIS For absolute precision in thread grinding Conventional external grinding To technologically demanding threads or keyways in difficult machining materials, special grinding machines used to be the first choice. This will now change with the introduction of an A-axis on the STUDER S41 and S22 cylindrical grinding machines. Thanks to the A-axis the S41 and the S22 transform into perfect all-rounders. STUDER's standard range now includes the grinding of recirculating ball screws, thread gauges or threaded bushings with internal screw threads. This is a big step towards efficient finish machining in a single clamping. Machine types: S41 universal cylindrical grinding machine Production cylindrical grinding machine S22 Internal grinding

Conventional external grinding Number of A-axes on wheelhead Internal grinding Swivel angle* Grinding wheel Ø Width Arbor length Longitudinal positioning of spindle Swiveling time Resolution Repetition accuracy Interpolating axis approx. 2.5 s (max. swiveling range) 0.0001° <1 arc second (move in from below) No * Each specification has its own limitation on the swing angle. Together with the established StuderThread software package, it is also possible for the purposes of thread grinding, to realize thread pitches that go beyond the mechanical swivel angle. Fritz Studer AG 3602 Thun · Switzerland...