HEIDENHAIN's KGM Grid Encoder. Image credit: HEIDENHAIN

HEIDENHAIN has improved their KGM grid encoders to meet the needs of CNC-controlled machine users. The KM 281 grid encoder has a measuring range of Ø 140 mm and increased accuracy of + 1 μm and is available now.

The 281 is part of HEIDENHAIN’s KGM grid encoder series, comes with phase grating and has the optical measuring standard. The product is embedded in a two-piece aluminum holder. The holder is there to prevent mechanical stress induced at the level of the measuring standard. Because of this, it is now possible to guarantee the accuracy grade.

The KGM 281 is 21.5 mm higher than the KGM 181, but the 281 can be mated to the same dimensions.

The KGM grid encoders test the contouring accuracy of CNC-controlled machine tools. They can perform circular interpolation tests. The radii are ranging from 115 mm to .01 mm with feed rates at up to 80 m/min. The 281 can do free-form tests in two axes. One of its advantages is contact-free measurement. This eliminates any influence of ball bearings.

For more information, go to the website here.