Nabtesco adds a FLUX inductive encoder to its new RDS-C Link gearbox
Nabtesco Precision Europe and FLUX GmbH built an encoder into the RDS-C Link cycloidal gearbox to read absolute position at the output, with a debut at SPS in Nuremberg.
FLUX GmbH and Nabtesco Precision Europe have worked together to place an inductive encoder inside the RDS-C Link, a new gearbox based on Nabtesco's cycloidal design. The sensor comes from FLUX's IND-ROT family, adapted for this product, and sits on a hollow shaft linked to the output shaft. That lets it measure absolute position where the motion actually leaves the gearbox, not at the motor side.
According to the report, the encoder works without contact, offers resolution up to 22 bits and accuracy up to ±18 arcseconds. Because it is inductive, it is meant to cope with dust, dirt and condensation that can trouble optical sensors, and it is described as highly compatible with electromagnetic interference. Target uses include satellite, antenna and radar systems, irradiation equipment and X-ray systems. The companies say measuring at the output allows software to correct errors from gearbox flex, wear and temperature, even under load.
The gearbox will be shown at the SPS trade fair in Nuremberg from 24 to 26 November 2026, in Hall 3A at booth 426.
Why it matters
Gearbox backlash and flex are a constant problem for machines that must point precisely. Putting the sensor at the output is a compact way to deal with it. Neither company has given a price, a release date or test results from real installations, so the SPS demonstration is the first chance to see how the claims hold up.
