Elastomer-based magnetic-rings radial and axial versions in different diameters

Magnetic pole rings in conjunction with the appropriate sensor technology are used wherever rotary movements, such as angular positions and speeds on axes and drives, have to be detected, monitored and controlled. The magnetic scanning principle is not only non-contact, wear-free and low-maintenance, it is also extremely robust under extreme environmental conditions. Since the complete system is bearing free, mechanical influences do not directly affect the entire sensor.

  • Magnetic rings in radial (MRR) or axial (MRA) design
  • Suitable for a wide range of ELGO incremental sensors as well as for the battery powered IZ Series (measurement and display systems)
  • Three different pole lengths available (2 / 2.5 / 5 mm)
  • Contactless and therefore wear-free scanning   
  • Thanks to protection class IP68 predestined for outdoor use
  • Resistant to thermal, chemical and mechanical influences

The incremental sensors of the product series LMIX, EMIX, GMIX, KMIX, RMIX as well as the battery-operated measuring and display systems of the IZ series can be used for scanning the magnetic rings.
Pole length 2 mm: EMIX1/2, EMIX23, EMSC1/2, RMIX2
Pole length 2.5 mm:  IZ14E, IZ15E, IZ16E, IZ17E
Pole length 5 mm: LMIX1/2, LMIX22, GMIX1A, GMIX2, KMIX2, LMSC1/2

Product inquiry

Radial MRR variants

Designation ø outer in mm ø inside in mm height in mm number of poles =pole length in mm
MRR-00-029-020-10-0XXX 29,8 20 10 50 / 40 /20 2 / 2,5 / 5
MRR-00-038-030-10-0XXX 38,7 30 10 64 / 52 / 26 2 / 2,5 / 5
MRR-00-048-040-10-0XXX 48,9 40 10 80 / 64 / 32 2 / 2,5 / 5
MRR-00-055-050-10-0XXX 55,3 50 10 90 / 72 / 36 2 / 2,5 / 5
MRR-00-074-060-10-0XXX 74,4 60 10 120 / 96 / 48 2 / 2,5 / 5
MRR-00-079-070-10-0XXX 79,5 70 10 128 / 102 / 52 2 / 2,5 / 5
MRR-00-099-080-10-0XXX 99,9 80 10 160 / 128 / 64 2 / 2,5 / 5
MRR-00-120-090-10-0XXX 120,2 90 10 192 / 156 / 78 2 / 2,5 / 5
MRR-00-131-100-10-0XXX 131,7 100 10 210 / 168 / 84 2 / 2,5 / 5
MRR-00-163-140-10-0XXX 163,5 140 10 260 / 208 / 104 2 / 2,5 / 5
MRR-00-201-170-10-0XXX 201,7 170 10 320 / 256 / 128 2 / 2,5 / 5
MRR-00-329-250-10-0XXX 329,0 250 10 520 / 426 / 208 2 / 2,5 / 5
MRR-00-405-275-10-0XXX 405,4 275 10 640 / 512 / 256 2 / 2,5 / 5

 

Axial MRA variants

Designation ø outer in mm ø inside in mm height in mm number of poles =pole length in mm
MRA-00-045-035-02-0XXX 45 35 2 64 / 52 / 26 2 / 2,5 / 5
MRA-00-061-051-02-0XXX 61,3 51,3 2 90 / 72 / 36 2 / 2,5 / 5
MRA-00-080-070-02-0XXX 80 70 2 122 / 94 / 48 2 / 2,5 / 5
MRA-00-100-090-04-0XXX 100 90 4 152 / 120 / 60 2 / 2,5 / 5
MRA-00-130-120-04-0XXX 130 120 4 196 / 120 / 60 2 / 2,5 / 5
Magnetic layer material elastomer bonded hard ferrite
Carrier material ferromagnetic steel 1.4104 (others on request)
Single pitch error 46 [m°]*
Position error 23 [m°]pp
Peripheral speed 10 [m/s]*
Max. pulses / revolution interp. factor x number of poles
Rotation speed max. 6000 [rpm]*
Temperature range -40 ... +85 °C
Protection class IP68
Maximum humidity 95%, non-condensing

 

 

* based on a reference diameter of 100 mm

Influence of external magnets:
External magnetic flux density must not exceed 64 mT (field strength lower 52kA/m) on the surface of the magnetic ring because this could damage or destroy the magnetic pattern on the ring. Each external magnetic flux density will reduce the accuracy of the system. Lower flux density than 10 mT (the remanence of normal steel is lower) will have only a weak influence.