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SR10A/E512/AX end-of-shaft slip ring, 10 circuits, with encoder

SR/ERT Series slip rings with encoder

Ten-circuit end-of-shaft slip ring with a 63.5 mm (2.5 in) rotor and a built-in optical encoder, for low-level signals: strain gages, thermocouples, accelerometers and low voltages.

Circuits
Rotor diameter
Seals
Encoder
Encoder electronics
Rotor connection
Stator connector

Model SR10A/E512/AX

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10
Circuits
10 000 rpm
Max speed
63.5 mm
Rotor diameter
512 ppr
Encoder
80 mm · 397 g
Length · weight
  • Max current per circuit500 mA
  • Length80 mm

Ten-circuit end-of-shaft slip ring and encoder, 63.5 mm rotor

This end-of-shaft slip ring has ten gold alloy rings rated at 0.5 A, which carry strain gages, thermocouples, accelerometers and low voltages with a peak resistance variation of 0.1 Ω. Its optical encoder, of 256, 360, 500 or 512 pulses per revolution according to the model, measures speed, angle and direction of rotation without using any ring. Its stainless steel rotor has a 63.5 mm (2.5 in) flange, and its anodized aluminum stator a radial Bendix PT02E-14-19P connector. It is 80 mm long, weighs 397 g and runs up to 10 000 rpm, from −40 to 85 °C.

On installation, the rotor flange is screwed to the end of the shaft with 8-32 screws on a 57.15 mm (2.250 in) circle. A rotation restraint is attached to the threaded holes of the stator. The encoder runs on 5 to 20 V DC, 100 mA, and gives A and B quadrature, index and A⊕B pulses of 0 to 5 V, with a maximum cumulative error of 0.25°. As an option, built-in electronics add either tachometer outputs (T), a velocity voltage up to ±10 V and a position voltage up to +10 V, on 8 to 18 V DC, or, with the 360 ppr encoder, resolver outputs (R), sine and cosine up to ±10 V.

It is used, for example, on a gaged accessory belt pulley, where speed, angle and direction of rotation are recorded with the torque, or on a running engine’s crankshaft.

SR/ERT Series, view 2

Specifications

SR10A/E512/AX
Angle accuracy≤ 0.25° (maximum cumulative error)
Circuits10
Rotation sensorEncoder
Encoder resolution512 ppr
Encoder electronicsNone
Embedded amplifierNone
Max peak contact noise≤ 100 mΩ
Encoder signalsA · B · Index · A⊕B (A and B in quadrature, 1 ppr index, 0 to 5 V)
Current per circuit500 mA
Supply voltage5 to 20 V (encoder)
Supply current100 mA (encoder)
MountingEnd of shaft
Max speed10 000 rpm
Running torque0.021 N·m (3 in-oz without seals)
Rotor diameter63.5 mm
SealsNone (sealed against dust)
Dimensionslength 80 mm (without mating connectors)
Weight397 g (without mating connectors)
Operating temperature−40 to 85 °C
ConnectionsConnector (stator: radial Bendix PT circular connector; rotor: circular connector)
Shown: SR10A/E512/AX. Download the files

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The stator always has a radial circular connector (X).

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