Radial magnetic rings

Radial magnetic rings

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  • MR031 radial ring
  • MR040 radial ring
  • MR047 radial ring
  • MR050 radial ring
  • MR057 radial ring
  • MR075 radial ring
  • MR122 radial ring
  • MR324 radial ring
  • MR406 radial ring

Magnetic rings for use in harsh environments

The robust RLS magnetic rings consist of a vulcanised elastoferrite layer securely attached to a steel hub. The elastoferrite layer is magnetised with 2 mm or 5 mm long alternating magnetic poles which form an incremental magnetic pattern.


Additionally, reference mark magnetic signature can be added to incremental magnetic pattern. Unique, multiple or distance coded reference marks are available.

 

Compatible with RLS readheads

Magnetic incremental rings are compatible with RLS standard LM1X family or component level RoLin readheads, which bring reliable operation due to non-contact design. Industry standard incremental or analogue output types are available.

 

Improved safety and reliability

To assure safety and reliability at high speeds and temperatures the rings can optionally be covered with a protective steel foil. This protective layer also minimises the influence of ageing and possible chemical degradation of the ring’s elastoferrite layer.

 

Easy installation for various shaft diameters

Various diameters are supported for radial rings from 30 mm to 406 mm. Radial rings allow heating up to 160 °C,  which makes them ideal for shrink fit installation. Due to high precision machining, the rings can also be press-fitted. 

 

Applications

The magnetic incremental rings bring reliable solutions to tough, hard-working applications including spindles, lathes, other machine tool applications. 

 

Radial rings - Features and compatibility
MR031E link
MR031G link
MR040E link
MR040G link
MR047B link
MR050E link
MR057E link
MR075E link
MR100F link
MR122 link
MR324 link
MR406 link

 

Dimensions and installation tolerance

Radial rings

 

Rotary magnetic encoder

 LM10  LM13 LM15 RLM RLB  RLC2IC RLC2HD

MR031E

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MR031G

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MR040E

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MR040G

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MR047B

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MR050E

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MR057E

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MR075E

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MR100F

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MR122

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MR324

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MR406

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For ring speed tables with LM13 encoder please contact sales@rls.si.

You can find speed tables for rings with LM10, LM15, RLM, RLC2IC, RLC2HD and RLB encoders bellow:

MR031E Radial magnetic ring
Outer Diameter 31 mm
Inner Diameter 20 mm
Number of poles
50 poles 20 poles
Max speed (rpm) for MR031E ring
see table >> see table >>
With protection cover - Option H
see table >> see table >>
MR031G Radial magnetic ring
Outer Diameter 31 mm
Inner Diameter 20 mm
Number of poles
50 poles 20 poles
Max speed (rpm) for MR031G ring
see table >> see table >>
MR040E Radial magnetic ring
Outer Diameter 40 mm
Inner Diameter 30 mm
Number of poles
64 poles 26 poles
Max speed (rpm) for MR040E ring
see table >> see table >>
With protection cover - Option H
see table >> see table >>
MR040G Radial magnetic ring
Outer Diameter 40 mm
Inner Diameter 30 mm
Number of poles 64 poles
Max speed (rpm) for MR040G ring see table >>
MR047B Radial magnetic ring
Outer Diameter 47 mm
Inner Diameter 40 mm
Number of poles 72 poles
Max speed (rpm) for MR047B ring see table >>
MR050E Radial magnetic ring
Outer Diameter 50 mm
Inner Diameter 40 mm
Number of poles
80 poles 32 poles
Max speed (rpm) for MR050E ring
see table >> see table >>
With protection cover - Option H
see table >> see table >>
MR057E Radial magnetic ring
Outer Diameter 57 mm
Inner Diameter 45 mm
Number of poles
90 poles 36 poles
Max speed (rpm) for MR057E ring
see table >> see table >>
With protection cover - Option H
see table >> see table >>
MR075E Radial magnetic ring
Outer Diameter 75 mm
Inner Diameter 60 mm
Number of poles
120 poles 48 poles
Max speed (rpm) for MR057E ring
see table >> see table >>
With protection cover - Option H
see table >> see table >>
MR100F Radial magnetic ring
Outer Diameter 100 mm
Inner Diameter 85 mm
Number of poles 160 poles
Max speed (rpm) for MR406E ring see table >>
MR122E Radial magnetic ring
Outer Diameter 122 mm
Inner Diameter 90 mm
Number of poles 194 poles
Max speed (rpm) for MR047B ring see table >>
With protection cover - Option H see table >>
MR324E Radial magnetic ring
Outer Diameter 324 mm
Inner Diameter 240 mm
Number of poles 512 poles
Max speed (rpm) for MR324B ring see table >>
With protection cover - Option H see table >>
MR406E Radial magnetic ring
Outer Diameter 406 mm
Inner Diameter 360 mm
Number of poles 640 poles
Max speed (rpm) for MR406E ring see table >>
With protection cover - Option H see table >>

Radial rings with readheads LM10, LM13 and LM15 encoders

Temperature
Readhead
Operating –10 °C to +80 °C (cable under non-dynamic conditions: –20 °C to +85 °C)
Storage -40 °C to +85 °C
Ring
Operating and storage

HNBR: -40 °C to +160 °C
NBR: -40 °C to +105 °C

Environmental sealing IP68 (according to IEC 60529)
EMC Immunity IEC 61000-6-2 (particularly: ESD: IEC 61000-4-2; EM fields: IEC 61000-4-3; Burst: IEC 61000-4-4; Surge: IEC 61000-4-5; Conducted disturbances: IEC 61000-4-6; Power frequency magnet fields: IEC 61000-4-8; Pulse magnetic fields: IEC 61000-4-9)
EMC Interference IEC 61000-6-4 (for industrial, scientific and medical equipment: IEC 55011)
Vibrations (55 Hz to 2000 Hz) 300 m/s2 (IEC 60068-2-6)
Shocks (11 ms) 300 m/s2 (IEC 60068-2-27)
RoHS Compliant with EU Directive 2002/95/EC

 

Radial rings with readheads RLM, RLC2IC, RLC2HD and RLB encoders

Temperature
Readhead
   RLM, RLC2IC and RLC2HD RLB
Operating –40 °C to +85 °C

–20 °C to +85 °C

Storage –40 °C to +85 °C
Ring
Operating and storage

HNBR: -40 °C to +160 °C
NBR: -40 °C to +105 °C

Environmental sealing NA
EMC Immunity IEC 61000-6-2 (particularly: ESD: IEC 61000-4-2; EM fields: IEC 61000-4-3; Burst: IEC 61000-4-4; Surge: IEC 61000-4-5; Conducted disturbances: IEC 61000-4-6; Power frequency magnet fields: IEC 61000-4-8; Pulse magnetic fields: IEC 61000-4-9)
EMC Interference IEC 61000-6-4 (for industrial, scientific and medical equipment: IEC 55011)
Vibrations (55 Hz to 2000 Hz) 300 m/s2 (IEC 60068-2-6)
Shocks (11 ms) 300 m/s2 (IEC 60068-2-27)
RoHS Compliant with EU Directive 2002/95/EC
Moisture level
RLM RLC2IC RLC2HD RLB
- - MSL6 (IPC/JEDEC-J_STD_020) -

Features

  • Radial rings
  • Excellent dirt immunity
  • Bi-directional reference mark
  • High reliability from proven noncontact sensing technology
  • Industry standard digital outputs

Buy products by choosing the specifications

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Delivery time up to: 10 days

Total price:

$13.67

Availability: In stock

More than 10 pcs or need technical assistance? Contact for quote.