So that things run smoothly

Faster, more accurate, more user-friendly

"Form and position dimensions are responsible for the fit and running accuracy of bearings," says metrologist Martin Polimenow. "The tolerances here are very tight, and the demands on the measurement technology are correspondingly high." Therefore, at the end of 2020, the company started looking for a suitable solution to expand its quality assurance. KRW found what it was looking for with the MarForm MMQ 500 form measuring machine from Mahr. This impressed the company in many respects, for example with its high axis accuracy, especially in the C axis, the intuitive software, and the reliable repeatability. The metrology technician also rates the user-friendliness with an A: "All processes go quickly and easily: changing the probe arm unit, aligning our parts, moving the axes."

The fact that the MMQ 500 can run with automatic measuring programs that are quick and easy to create has had a particularly positive effect on daily work in the measuring room. This speeds up and expands the measuring process and increases repeatability. In addition, the stored sequences mean that even employees with little metrological experience can perform extensive tests reliably and repeatably.

Universally applicable – high utility value

At KRW, the MMQ 500 is located in an air-conditioned precision measuring room next to the grinding shop. The measuring technicians use it daily in three-shift operation, and it is used universally for different rolling bearing components such as outer and inner rings and rolling elements. They measure many different characteristics such as roundness, flatness, straightness, cylindricity, parallelism, running, coaxiality and radial runout or waviness. Metrologists save time by being able to recalculate measuring elements. Also very helpful is the ability to create measurement references that prevent residual eccentricity in the measurement. "I also find it practical that I can create multiple protocols. This gives me all measurement results at a glance," says Polimenow.

Other proven measuring technology from Mahr

In addition to the new formtester, KRW also works with other machines from Mahr. The cooperation, especially with the service technicians on site, has always been reliable. KRW also rates the knowledge transfer positively: "The training courses in Göttingen and Leipzig were well-founded in terms of content and didactically very well prepared; an answer was quickly found for every technical question.

Photos: KRW Leipzig GmbH