Ref: SR/ERT Series

Modular slip ring - end of shaft - 10 to 36 circuits - with encoder

  • 10, 20, or 36 slip ring connections
  • Encoder or resolver rotation sensor
  • Additional encoder electronics (built in)
  • Available with or without weatherproof seals
  • Different rotor styles
  • Circular connectors or color coded solder terminals
  • Instrumentation quality rings & brushes
  • Sealed, corrosion resistant metal housing
  • Lightweight and compact
  • Available without an encoder

Download the product sheet

?

End of shaft slip ring with rotation sensor

The highly modular SR/ERT Series provides up to 36 circuit connections with a rotation sensor that is mounted at the end of a rotating shaft in a robust housing. The gold alloy slip rings are used to make high quality electrical connection to strain gages, thermocouples, or other sensors that have been installed on rotating machinery. The current capacity is 0.5 A per connection and the maximum peak resistance variation is 0.1 ohm.

The rotation sensor is used to measure rotational velocity, angular position, and direction of rotation. The rotation sensors do not use any of the slip ring connections. All models are available without encoder electronics as well.

The housings of the ERT slip ring assemblies are 80 to 130 mm long, depending on the number of slip rings. They weigh about 400 grams. The rotors are made from high strength stainless steel. The stators are lightweight, nickel-plated, aluminum. Threaded holes are provided for attaching a rotation restraint. Connection information is permanently engraved on the housing.

SR/ERT Configuration

Circuits quantity

10, 20 or 36 circuits

Wheatherproof option

All housings in this series have been designed to accept contacting rotary seals. Units ordered with these seals (choice W) are completely weatherproof and can survive days of total submersion. The seals limit operation to 2000 rpm maximum. Most wet weather applications, like automotive wheels, are within this range. For higher speeds in dry conditions, order units without the contacting rotary seals. Units without seals are capable of the following speeds:

  • 10 rings – 10,000 rpm
  • 20 rings – 4,000 rpm
  • 36 rings – 2,400 rpm

Unit torque with seals is 151mNm. Unit torque without seals is 21 mNm. If the application requires a high speed, weatherproof slip ring & encoder, consider units with noncontacting labyrinth seals in the SR/E512 series.

Rotor and Stator Connections

Numerous options for the rotor/stator connections.

Combination Rotor Stator
Connector Axial Connector Radial
Connector Axial Soldering Terminal Radial
Soldering Terminal axial IN Connector Radial
Soldering Terminal axial OUT Connector Radial
Soldering Terminal axial IN Soldering Terminal Radial

Circular connectors or solder terminals are offered as wiring terminations. A circular connector is usually specified on the stator. On the rotor, test applications needing a quick disconnect specify circular connectors. If space is limited, solder terminals are specified on the rotor. In both cases there is also a choice of orientation.

Encoder option (E)

  • Resolution: 256, 360 or 512 pulses per rev.
  • Signal output: 4 TTL-Signalausgänge A, B (um 90° versetzt zu A), A+B and I with Index-Puls/rev.
  • Power supply unit: +5 to +20V DC / 100mA)
  • No use of slip ring connections.
  • Target and electronics resistant to shocks and vibrations

Encoder option with electronics (T / Tachometer)

  • Encoder + embedded Encoder-Elektronics
  • Signal output : 2 analog voltages +/-10V DC linear to shaft speed and position
  • Customer specific electronics configuration done in factory
  • Power supply: 6 to 16 V DC - 400 mA

Resolver R360 (R)

  • absoluter Positionssensor mit absoluter Winkelposition, dadurch ist kein Indexpuls zu Nullpunktbestimmung erforderlich
  • analoge Ausgangssignale Sinus und Cosinus
  • externe Signalkonditionierung RESSC-2-12V erforderlich

SR/ERT available models

No encoder models

Model Circuits Max Speed Sealed Rotor Diam [mm] Length [mm] Weight [g] Rotor Stator Drawing
SR10A/AX / SR10AW/AX 10 10.000 / 2.000 no / yes 63.5 80 400 Connector Axia Connector Radial Drawing
SR10A/TX / SR10AW/TX 10 10.000 / 2.000 no / yes 63.5 80 425 Soldering Terminal - axial - OUT Connector Radial
SR10M/X / SR10MW/X 10 10.000 / 2.000 no / yes 50.8 80 340 Soldering Terminal - axial - IN Connector Radial
SR20A/AX / SR20AW/AX 20 4.000 / 2.000 no / yes 63.5 94 425 Connector Axia Connector Radial Drawing
SR20A/AX2 / SR20AW/AX2 20 4.000 / 2.000 no / yes 63.5 94 425 Connector Axia Connector Radial Drawing
SR20M/RX / SR20MW/RX 20 4.000 / 2.000 no / yes 50.8 126 570 Soldering Terminal - axial - IN Connector Radial
SR20A/TX / SR20AW/TX 20 4.000 / 2.000 no / yes 63.5 94 425 Soldering Terminal - axial - OUT Connector Radial
SR20M/X / SR20MW/X 20 4.000 / 2.000 no / yes 50.8 94 370 Soldering Terminal - axial - IN Connector Radial
SR20M/X2 / SR20MW/X2 20 4.000 / 2.000 no / yes 50.8 94 370 Soldering Terminal - axial - IN Connector Radial
SR20M 20 4.000 no 50.8 94 570 Soldering Terminal - axial - IN Soldering Terminal - Radial
SR36A/AX / SR36AW/AX 36 2.400 / 2.000 no / yes 63.5 114 485 Connector Axia Connector Radial
SR36M/X / SR36MW/X 36 2.400 / 2.000 no / yes 50.8 114 370 Soldering Terminal - axial - IN Connector Radial

Encoder models

Model list below for 512 ppr encoder version. Available with 256 and 360ppr resolution as well.

Model Circuits Max Speed Sealed Rotor Diam [mm] Length [mm] Weight [g] Rotor Stator Drawing
SR10A/E512/AX / SR10AW/E512/AX 10 10.000 / 2.000 No / yes 63.5 80 400 Connector - axial Connector - radial
SR10A/E512/TX / SR10AW/E512/TX 10 10.000 / 2.000 No / yes 63.5 80 425 Soldering terminal - axial - out Connector - radial
SR10M/E512 / SR10MW/E512 10 4.000 / 2000 No / yes 50.8 80 320 Soldering terminal - axial - in Soldering terminal - radial
SR10M/E512/X / SR10MW/E512/X 10 10.000 / 2.000 No / yes 50.8 80 340 Soldering terminal - axial - in Connector - radial
SR20A/E512/AX / SR20AW/E512/AX 20 4.000 / 2.000 No / yes 63.5 94 425 Connector - axial Connector - radial
SR20A/E512/AX2 / SR20AW/E512/AX2 20 4.000 / 2.000 No / yes 63.5 94 425 Connector - axial Connector - radial
SR20M/E512/RX / SR20MW/E512/RX 20 4.000 / 2.000 No / yes 50.8 126 570 Connector Radial Connector - radial
SR20A/E512/TX - SR20AW/E512/TX 20 4.000 / 2.000 No / yes 63.5 94 425 Soldering terminal - axial - out Connector - radial
SR20M/E512/X / SR20MW/E512/X 20 4.000 / 2.000 No / yes 50.8 94 370 Soldering terminal - axial - in Connector - radial
SR20M/E512/X2 - SR20MW/E512/X2 20 4.000 / 2.000 No / yes 50.8 94 370 Soldering terminal - axial - in Connector - radial
SR20M/E512 20 4.000 nein 50.8mm 94 570 Soldering terminal - axial - in Soldering terminal - radial
SR36A/E512/AX / SR36AW/E512/AX 36 2.400 / 2.000 No / yes 63.5 108 485 Connector - axial Connector - radial
SR36M/E512/X / SR36MW/E512/X 36 2.400 / 2.000 No / yes 50.8 108 370 Soldering terminal - axial - in Connector - radial

Tachymeter models

Model list below for 512 ppr encoder version. Available with 256 and 360ppr resolution as well.

Model Circuits Max Speed Sealed Rotor Diam [mm] Length [mm] Weight [g] Rotor Stator Drawing
SR10A/T512/AX - SR10AW/T512/AX 10 10.000 / 2.000 No / yes 63.5 94 425 Connector Radial Connector Axial
SR20A/T512/AX - SR20AW/T512/AX 20 4.000 / 2.000 No / yes 63.5 94 425 Connector Radial Steck-
SR20A/T512/TX - SR20AW/T512/TX 20 4.000 / 2.000 No / yes 63.5 94 425 Connector Radial Soldering Termin axial - OUT
SR20M/T512/X - SR20MW/T512/X 20 4.000 / 2.000 No / yes 50.8 94 425 Connector Radial Soldering Termin axial - IN
SR20M/T512/X2 - SR20MW/T512/X2 20 4.000 / 2.000 No / yes 50.8 94 370 Connector Radial Soldering Termin axial - IN
SR36A/T512/AX - SR36AW/T512/AX 36 4.000 / 2.000 No / yes 63.5 108 425 Connector Radial Connector Axial

Resolver models

Series
SR/ERT
Mounting
End of shaft
Circuits
10, 20, 36
Max rotation speed
10000 , 2000 , 4000 , 6000 rpm
Wheatherproof
option
Encoder
no, 256 ppr, 512 ppr
Courant maximal par voie
500 mA
Rotor Diameter
63.5 / 50.8 mm
Diamètre stator
39 mm
Longueur
80 mm
Température de fonctionnement
-40 to 100 °C
Contacts rotor
Picots à souder
Contact Stator
Picots à souder
  • Refer to drawings
  • Encoder / Tachymeter / Resolver
  • Wheatherproof
  • Connectors
  • Cables

Related products

collecteur tournant mesure short S Series

SHORT S-SERIES

Slip Ring – End of Shaft – Compact – 4 to 10 Circuits - 12000 rpm
collecteur tournant mesure

SR Series

Robust Slip ring Assembly - End of shaft - 6 to 36 circuits
collecteur tournant bout d'arbre

SR/E60 Series

End of shaft Slip ring - 4 to 10 circuits - Encoder - 6000 rpm
collecteur tournant bout d'arbre

AMP-SGx-U2

Modular Spinning 1 to 3 channel Strain Gage Amplifier
Phone +33 1 46 91 93 32