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SR84/85 Magnescale
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This robust medium type magnetic scale system that outputs position signals for machine tools and other equipment that require high-precision positioning.

  • Maximum resolution : 0.01 μm(SR85:Mitsubishi Electric), 0.05μm(SR84)
  • Accuracy(at 20°C) : 3+3ML/1,000 μmp-p, 5+5ML/1,000 μmp-p
  • Measuring Length(L) : 140-3,040mm
  • Maximum response speed :200m/min(SR85), 50m/min(SR84:Resolution:0.1μm, Minimum phase difference : at 50 ns)
  • Protocol (SR85) : Mitsubishi Electric, Panasonic, Yaskawa Electric
  • Output signal (SR84) : A/B/Reference point line driver signal, compliant with EIA-422
    •        (SR85) : Incremental serial bidirectional signal, compliant with EIA-485


Measuring length(L)140~3040mm(24types)
140, 240, 340, 440, 540, 640, 740, 840, 940, 1040, 1140, 1240, 1340, 1440, 1540, 1640, 1740, 1840, 2040, 2240, 2440, 2640, 2840, 3040mm
Thermal expansion coefficient12±1 × 10-6/ ℃
Output signalA/B/Reference point line driver signal, compliant with EIA-422Incremental serial bidirectional signal, compliant with EIA-485
Accuracy(20℃) (3+3L/1,000)μm p-p or (5+5L/1,000)μmp-p L:Measuring length(mm)
ResolutionSelectable from 0.05, 0.1, 0.5 and 1 μm
(Set at factory shipping)
0.01/Selectable from 0.05, 0.1, 0.5 and 1 μm
(Set at factory shipping)
Reference point positionNone, Center point, Multi-point (40 mm pitch), Reference mark (standard pitch: 20 mm),
User-selected point (1 mm pitch)
None, Center point, User-selected point (1 mm pitch)
Power supply voltageDC4.75-5.25V(At cable connection end)
Consumption current200mA(at 120 Ω terminal)or less
Inrush current2A or less(When the power supply rise time is 10 ms)
Maximum response speed50m/min(Resolution: 0.1 um, Minimum phase difference: at 50 ns)200m/min(User-selected resolution setting)
Vibration resistance250m/s2(50Hz~2kHz)
Impact resistance450m/s2(11ms)
Protective design gradeIP54 (Air purge not included), IP65 ((Air purge included)
Other protectionsOil lubricant can also be used under severe environmental conditions.
Power supply protectionIn the case of errors such as a reverse-connected power supply or over-voltage, the internal fuse is cut to protect the power being supplied and wiring.
Safety standardsFCC Part15 Subpart B Class A. ICES-003 Class A Digital Device. EN55011 Gp1 Class A, EN61000-6-2. Safety standards not applicable (60 V DC or less).
Operating temperature0 ~+50℃
Storage temperature-20 ~+55℃
MassApprox. 1.24kg + 4kg/m
Slider sliding resistance1N or less
Cable Specifications

※Please consult with our sales for the cable length other than above.

Magnescale reserves the right to change product specifications without prior notice.

DescriptionCable with open endCable with open end
Length3, 5, 10, 15m


Product name2D3D
SR84/85 014 014L 014R 014L 014R
SR84/85 024 024L 024R 024L 024R
SR84/85 034 034L 034R 034L 034R
SR84/85 044 044L 044R 044L 044R
SR84/85 054 054L 054R 054L 054R
SR84/85 064 064L 064R 064L 064R
SR84/85 074 074L 074R 074L 074R
SR84/85 084 084L 084R 084L 084R
SR84/85 094 094L 094R 094L 094R
SR84/85 104 104L 104R 104L 104R
SR84/85 114 114L 114R 114L 114R
SR84/85 124 124L 124R 124L 124R
SR84/85 134 134L 134R 134L 134R
SR84/85 144 144L 144R 144L 144R
SR84/85 154 154L 154R 154L 154R
SR84/85 164 164L 164R 164L 164R
SR84/85 174 174L 174R 174L 174R
SR84/85 184 184L 184R 184L 184R
SR84/85 204 204L 204R 204L 204R
SR84/85 224 224L 224R 224L 224R
SR84/85 244 244L 244R 244L 244R
SR84/85 264 264L 264R 264L 264R
SR84/85 284 284L 284R 284L 284R
SR84/85 304 304L 304R 304L 304R

*Please contact our sales department.



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SR84/85 SeriesJapaneseSR84/85 Catalog Japanese PDF
SR84/85 SeriesEnglishSR84/85 Catalog English PDF

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