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Short S-Series end-of-shaft slip ring (model shown: Short S6/X/G)

Short S-Series end-of-shaft slip ring

Four-circuit compact end-of-shaft slip ring, 22.15 mm long and 56 g, for strain gages, thermocouples, accelerometers and low voltages, up to 12 000 rpm.

Circuits
Rotor
Stator connection
Embedded amplifier
Rotor wires
Version

Model SHORT S4

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4
Circuits
  • Operating temperature−1 to 138 °C
  • Max current per circuit500 mA
  • Weight56 to 65 g

Short S4: four-circuit compact end-of-shaft slip ring

The Short S4 is the four-circuit model of the Short S-Series. It mounts on a shaft end and carries strain gages, thermocouples, accelerometers and low voltages from rotor to stator. Its four circuits are rated at 500 mA through precious metal rings and brushes, with a peak resistance variation of 0.1 Ω, and the stainless steel and aluminum case is sealed against dust. The rotor, 41.28 mm (1.625 in) in diameter, carries two redundant sets of color-coded solder terminals. The Short S4/X is 22.15 mm long, weighs 56 g and runs up to 12 000 rpm, from −1 to 138 °C. A colder environment is specified when ordering.

It is ordered as Short S4/X, with a miniature connector on the stator and one 3 m (10 ft) cable; Short S4, with end terminals on the stator; Short S4/T, with stator terminals; Short S4/TG, with stator terminals and no restraint bracket; or Short S4/T/LHV, with stator terminals and a lubrication hole. The part number guide explains the suffixes.

The rotor is fixed to the shaft end with two 4-40 or M2.5 screws on a 36.45 mm (1.435 in) bolt circle, directly or through a rotor adapter, with a total indicated runout of no more than 0.025 mm (0.001 in). Stranded wires of 28 or 30 AWG, 24 AWG at most, run along the shaft or through its bore and are secured to it before being soldered to the rotor terminals. The S-Series user manual describes the mounting. Except on the Short S4/TG, the stator is held by a tether on its tabs, a flexible cable or a soft spring.

It is primarily used on engines in vehicles, where space is limited and conditions are hot, fast and vibrating: see measurements in limited space and accessory belt pulley torque.

Short S-Series, view 2

Specifications

SHORT S4
Circuits4
Rotation sensorNone
Embedded amplifierNone
Max peak contact noise≤ 100 mΩ
Current per circuit500 mA
MountingEnd of shaft
Rotor diameter41.28 mm
Operating temperature−1 to 138 °C
ConnectionsSolder terminals (rotor: solder terminals · stator: end terminals)
Shown: SHORT S4. Download the files

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