Ref: SR__/PE512 Series

Slip ring assembly - 0 to 10 circuits - precision encoder

  • 0, 4, 6, 8 or 10 circuit slip ring with optical encoder
  • Zero connection option for use of only the precision encoder
  • 2.5″ Diameter Rotor
  • 2 outputs of 512 ppr in quadrature
  • 1 output of 1 ppr for an index pulse
  • All pulses accurate within 5 arc-minutes
  • Standard models sealed against dust
  • Instrumentation quality rings and brushes
  • Weatherproof units available

Download the product sheet



The Michigan Scientific Slip Ring and Precision Encoder Assemblies Series SR__/PE512 are used for applications requiring both a slip ring and a precision encoder. These assemblies are available in both standard and weatherproof models. The unit is designed to mount on the end of a rotating shaft, they make electrical connections to strain gages, thermocouples, or other rotating sensors, while simultaneously providing pulses to measure rotational velocity and angular position. The slip ring brushes and rings are made of precious metals, which minimizes noise and enables the assemblies to be used for low level instrumentation signals.

This slip ring SR__/PE512 accepts up to ten circuit connections and incorporates an optical encoder that generates two outputs of 512 pulses per revolution (ppr) in quadrature and a third output of 1 ppr. The quadrature feature detects the direction of rotation, and the 1 ppr is an index pulse used as a reference point when measuring angular position. True shaft position is indicated within 5 arc-minutes, resulting in high accuracy. This is particularly important when making measurements such as torsional vibration, instantaneous velocity, and angular position. Analog output signals for angular position and rotational speed can be obtained by using these models with Michigan Scientific’s Frequency to Voltage Encoder Electronics.

Connections to the standard models are made through color coded solder terminals located on both the slip ring rotor and slip ring stator. For the weatherproof models, connections to the slip ring rotor are made through terminals or a military style connector. To provide complete weatherproof protection, the assemblies can be sealed with a rubber boot that protects the terminals on the slip ring stator, or with 3145 RTV silicone. Permanently lubricated bearings eliminate the need for routine cleaning and maintenance.

Available models

  • Stator diameter: 55,18 mm
  • Rotor diameter: 50,8 (modle M) or 63,5 mm (modele A)
  • Weight: 425g
  • Stator connections: soldering terminals

Standard version

Model Circuits Max speed Length Rotor connections
SR0A/PE512 0 10.000 63.8mm Soldering terminals
SR4A/PE512 4 10.000 63.8mm Soldering terminals
SR6A/PE512 6 10.000 63.8mm Soldering terminals
SR8A/PE512 8 10.000 63.8mm Soldering terminals
SR10A/PE512 10 10.000 63.8mm Soldering terminals
SR10M/PE512 10 10.000 79.2mm Soldering terminals

Wheatherproof version

Model Circuits Max speed Length Rotor connections
SR4MW/PE512 4 2.000 79.2mm Soldering terminals
SR6MW/PE512 6 2.000 79.2mm Soldering terminals
SR8MW/PE512 8 2.000 79.2mm Soldering terminals
SR10MW/PE512 10 2.000 79.2mm Soldering terminals
SR10AW/PE512 10 2.000 79.2mm Soldering terminals
SR10AW/PE512/A 10 2.000 79.2mm Connector
SR10AB/PE512 10 10.000 81.0mm Soldering terminals
SR10AB/PE512/A 10 10.000 81.0mm Connector
End of shaft
0, 4, 6, 8, 10
Max rotation speed
2000 , 10000 rpm
512 ppr
Courant maximal par voie
500 mA
Rotor Diameter
50.8 / 63.5 mm
Diamètre stator
55.4 mm
79.2 63.8 81 mm
Température de fonctionnement
-40 to 100 °C
Contacts rotor
Picots à souder
Contact Stator
Picots à souder

Wheatherproof version

  • Both models SR10MW/PE512 and SR10AW/PE512/A are wheatherproof, the max speed is 2000 rpm
  • Both models SR10AB/PE512/A and SR4AB/PE512/T are wheatherproof, the max speed is 10.000 rpm
  • Wiring
  • Amplifiers

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