PI 022-16 Lohr am Main, 2016-03-04

Absolute, Robust and Precise: IMS-A Integrated Measuring System from Rexroth

Guide and measuring device in one: The IMS-A integrated measuring system detects the absolute position and works with high precision, even in a rugged environment.

Inductive absolute value measurement integrated in linear guides

The new Rexroth IMS-A measuring system integrated in linear guides detects the absolute position of the axis to +/- 4 micrometers. What's more, the measuring system is immune to contamination, vibrations, shocks and magnetic interference and needs no buffer batteries in the event of a power failure. Additional temperature and motion sensors are installed in anticipation of future requirements in terms of Industry 4.0.

When machines are switched back on following a power failure, the controllers in many applications need to know the position of each axis immediately. The new integrated IMS-A measuring system from Rexroth immediately recognizes the absolute position of the axis with a high degree of precision when the machine is switched on and reports them to the controller without carrying out a reference run. For this, the system does not require buffer batteries that need to be replaced regularly.

Thanks to the inductive measuring principle, the IMS-A operates without physical contact and is therefore a wear-free assembly. The measuring scale cannot be interfered with or destroyed by external magnetic fields. The IMS-A is not sensitive to vibrations up to 10 G and shocks up to 50 G. The sensors and evaluation electronics are located in protective housing on the end face of the runner block. With the IMS-A, position detection takes place very close to the tool center point, an important prerequisite for high precision, and thus surface quality in machining. The position resolution of the IMS-A is up to 0.025 µm.

The functional integration of guiding and measuring in an assembly minimizes installation times. No adjustment of the measuring system is necessary. With the IMS-A, engineers can use several runner blocks on an up to 4,500 mm long profile rail independently and without any accuracy limitations.

Prepared for Industry 4.0

The integration of additional temperature and motion sensors makes this measuring system prepared for the future requirements of Industry 4.0. The sensor data forms the basis for future approaches to predictive maintenance. The user can record and evaluate operating states online.

Economical, precise, safe, and energy efficient: drive and control technology from Bosch Rexroth moves machines and systems of any size. The company bundles global application experience in the market segments of Mobile Applications, Machinery Applications and Engineering, and Factory Automation to develop innovative components as well as tailored system solutions and services. Bosch Rexroth offers its customers hydraulics, electric drives and controls, gear technology, and linear motion and assembly technology all from one source. With locations in over 80 countries, more than 33,700 associates generated sales revenue of approximately 5.6 billion euros in 2014.

To learn more, please visit

The Bosch Group is a leading global supplier of technology and services. It employs roughly 375,000 associates worldwide (as of December 31, 2015). According to preliminary figures, the company generated sales of more than 70 billion euros in 2015. Its operations are divided into four business sectors: Mobility Solutions, Industrial Technology, Consumer Goods, and Energy and Building Technology. The Bosch Group comprises Robert Bosch GmbH and its roughly 440 subsidiaries and regional companies in some 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. In 2015, Bosch applied for some 5,400 patents worldwide. The Bosch Group’s strategic objective is to deliver innovations for a connected life. Bosch improves quality of life worldwide with products and services that are innovative and spark enthusiasm. In short, Bosch creates technology that is “Invented for life.”

Additional information is available online at , and


Search press releases


Susanne Herzlieb
Maria-Theresien-Straße 23
97816 Lohr am Main
Phone: +49 9352 18-1573

Related Articles


The digital journey of Linear Motion Technology has begun

While many mechanical engineers are still marveling at the force of which information technologies are making their way into factories, the basic technologies are also changing virtually unnoticed. To take Linear Motion Technology as an example, many still consider it a purely mechanical affair; however, more recent developments paint an entirely different picture. Matthias Rommel, Head of the Linear Motion Technology Business Unit at Bosch Rexroth AG explains which opportunities are now available due to digitization.

Press Information

Software of the future: Freed from …

…the restraints of hardware – the software of the future. In the factory of the future, machine modules and processing stations will be regularly reorganized, flexibly take on new tasks and retrieve the appropriate software function. This change has already begun: Machine manufacturers are already able to install identical control functions on various device platforms without any extra effort. Here is an overview of concepts for today and tomorrow: