Exposed linear encoders

Exposed linear encoders are designed for use on machines and installations that require high accuracy of the measured value. 

Typical applications include:

  • Measuring and production equipment in the semiconductor industry
  • PCB assembly machines
  • Ultra-precision machines
  • High-accuracy machine tools
  • Measuring machines and comparators, measuring microscopes, and other precision measuring devices
  • Direct drives

Absolute encoders

SeriesDescription
LICThe LIC exposed linear encoders permit absolute position measurement both over large paths of traverse up to 28 m and at high traversing speed. In their dimensions and mounting, they match the LIDA 400.

Encoders with position value output

SeriesDescription
LIP 200The LIP 211 and LIP 291 incremental linear encoders output the position information as a position value. The sinusoidal scanning signals are highly interpolated in the scanning head and converted to a position value by the integrated counter function. As with all incremental encoders, the absolute reference is established with the aid of reference marks.

Incremental encoders

SeriesDescription
LIP

For very high accuracy

The LIP exposed linear encoders are characterized by very small measuring steps together with very high accuracy and repeatability. They operate according to the interferential scanning principle and feature a DIADUR phase grating as the measuring standard.

LIF

For high accuracy

The LIF exposed linear encoders have a measuring standard manufactured in the SUPRADUR process on a glass substrate and operate on the interferential scanning principle. They feature high accuracy and repeatability, are especially easy to mount, and have limit switches and homing tracks. The special version LIF 481 V can be used in high vacuum up to 10–7 bar (see separate Product Information sheet).

LIDA

For high traversing speeds and large measuring lengths

The LIDA exposed linear encoders are specially designed for high traversing speeds up to 10 m/s, and are particularly easy to mount with various mounting possibilities. Steel scale tapes, glass or glass ceramic are used as carriers for METALLUR graduations, depending on the respective encoder. They also feature a limit switch.

PP

For two-coordinate measurement

On the PP two-coordinate encoder, a planar phase-grating structure manufactured with the DIADUR process serves as the measuring standard, which is scanned interferentially. This makes it possible to measure positions in a plane.

LIP/LIF

For application in high and ultrahigh vacuum technology

Our standard encoders are suitable for use in a low or medium vacuum. Encoders used for applications in a high or ultrahigh vacuum need to fulfill special requirements. Design and materials used have to be specially adapted for it. For more information, refer to the Technical Information document Linear Encoders for Vacuum Technology.