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MAG Incremental

Incremental magnetic encoder

No matter if destined for drive shafts on ships, for engines powering open-cast mining excavators, for tandem motors or gas and water turbines – incremental magnetic encoders from Johannes Huebner Giessen are a reliable, safe and flexible solution for even the harshest of environments. Utilizing a magnetic, non contact scanning principle the encoders are tolerant of large axial and radial play. Large shaft diameters up to 1500 mm possible. The noiseless magnetic encoders do not generate any heat. The version with a with split pulse wheel is particularly suitable for retrofitting and upgrade projects.



One-piece or split pulse wheel

Diameter hollow shaft

up to 1500 mm

Supply voltage

12 - 30 VDC

Signal amplitude


Standard pulse rates

64 to 30000

Output signals

0° signal (A) and inverted signal (A)
90° signal (B) and inverted signal (B)
Reference pulse (N) and inverted signal (N)
Check output (ERR) and inverted signal (ERR)

Maximum frequency

100 kHz (optional 200 kHz)

Device temperature range

-40 °C to +85 °C

Electrical connection

Terminal box
EMC cable clamp
Burndy connector
FOC connection

Degree of protection

IP66 to IP69

Axial tolerance

±3 mm (offset scanning head/pulse wheel)

Optional up to ±8 mm

Radial tolerance

up to 2.0 mm (air gap scanning head/pulse wheel)

Option S

Electronic overspeed switch; switching speed preset ex works

Switching speed range: 0.63 to 5600 rpm

Option FOC

As an alternative to conventional signal transmissions via copper cables it is also possible to transmit encoder signals via fiber optic cables

Catalog - Magnetic encoder systems (PDF, 1.31 MB) Download
Inquiry form - MAG (PDF, 199 KB) Download
Annex MAG installation situation (PDF, 1.56 MB) Download
Case Study - Koepe friction winder, mining (PDF, 233 KB) Download
Case Study - Measuring roll, rolling mill (PDF, 181 KB) Download
Case Study - Tandem motors, rolling mill (PDF, 185 KB) Download
Product Article MAG (PDF, 406 KB) Download
UL/CSA Certificate of Compliance (PDF, 176 KB) Download


Standard dimension drawings and connection diagrams are provided in the Operating and Installation Instructions. We would be pleased to send you individual variations as well as DXF/STEP files on request.