Heidenhain (GB) Ltd, Burgess Hill (www.heidenhain.co.uk), has uprated its LF series of sealed incremental linear encoders; they now offer improved positioning accuracy for use in precision machine tools such as jig borers and jig grinders, as well as linear-motor applications.

From a grating period of 8µm, the encoders generate 1 Vpp scanning signals that are free from harmonics and can be highly interpolated.

On the new LF 185 and 485 units, the resulting position error within one signal period is typically smaller than 0.4µm. LF encoders are available in lengths up to 3m.