SR-M/ERT end-of-shaft slip rings with encoder, 50.8 mm rotor
Ten-circuit end-of-shaft slip ring with a 50.8 mm (2 in) rotor and a built-in optical encoder, for low-level signals: strain gages, thermocouples, accelerometers and low voltages.
20-circuit end-of-shaft slip ring with a 50.8 mm (2 in) rotor and a built-in optical encoder, for low-level signals: strain gages, thermocouples, accelerometers and low voltages.
36-circuit end-of-shaft slip ring with a 50.8 mm (2 in) rotor and a built-in optical encoder, for low-level signals: strain gages, thermocouples, accelerometers and low voltages.
- 10
- Circuits
- 10 000 rpm
- Max speed
- 50.8 mm
- Rotor diameter
- 512 ppr
- Encoder
- 20
- Circuits
- 4 000 rpm
- Max speed
- 50.8 mm
- Rotor diameter
- 512 ppr
- Encoder
- 93 mm · 369 g
- Length · weight
- 36
- Circuits
- 2 400 rpm
- Max speed
- 50.8 mm
- Rotor diameter
- 512 ppr
- Encoder
- 115 mm · 369 g
- Length · weight
- Max current per circuit500 mA
- Max current per circuit500 mA
- Length93 mm
- Max current per circuit500 mA
- Length115 mm
SR10M/E512/X: ten-circuit end-of-shaft slip ring and encoder, 50.8 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 50.8 mm (2 in) flange with color-coded solder terminals, and its anodized aluminum stator a radial circular connector. It runs up to 10 000 rpm, from −40 to 85 °C.
On installation, the rotor flange is screwed to the end of the shaft. 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 tachometer outputs (T), a velocity voltage up to ±10 V and a position voltage up to +10 V, on 8 to 18 V DC.
It is used, for example, on a running engine’s crankshaft, where the encoder records crank speed and position while all the rings stay available for the strain channels.
SR20M/E512/X: 20-circuit end-of-shaft slip ring and encoder, 50.8 mm rotor
This end-of-shaft slip ring has 20 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 50.8 mm (2 in) flange with color-coded solder terminals, and its anodized aluminum stator a radial Bendix PT02E-16-26P connector. It is 93 mm long, weighs 369 g and runs up to 4 000 rpm, from −40 to 85 °C.
On installation, the rotor flange is screwed to the end of the shaft with three 8-32 screws on a 43.18 mm (1.700 in) circle, and the sensor wires are soldered to the rotor terminals. 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 tachometer outputs (T), a velocity voltage up to ±10 V and a position voltage up to +10 V, on 8 to 18 V DC.
It is used, for example, on a gaged accessory belt pulley or a running engine’s crankshaft, where speed, angle and direction of rotation are recorded with the torque and strain signals.
SR36M/E512/X: 36-circuit end-of-shaft slip ring and encoder, 50.8 mm rotor
This end-of-shaft slip ring has 36 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 50.8 mm (2 in) flange with color-coded solder terminals, and its anodized aluminum stator a radial Bendix JT02RE-16-35P connector. It is 115 mm long, weighs 369 g and runs up to 2 400 rpm, from −40 to 85 °C.
On installation, the rotor flange is screwed to the end of the shaft with three 8-32 screws on a 43.18 mm (1.700 in) circle, and the sensor wires are soldered to the rotor terminals. 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 running engine’s crankshaft, where the encoder records crank speed and position while all 36 rings stay available for the strain channels.
Specifications
| Angle accuracy | ≤ 0.25° (maximum cumulative error) |
|---|---|
| Circuits | 10 |
| Rotation sensor | Encoder |
| Encoder resolution | 512 ppr |
| Encoder electronics | None |
| Embedded amplifier | None |
| Max peak contact noise | ≤ 100 mΩ |
| Encoder signals | A · B · Index · A⊕B (A and B in quadrature, 1 ppr index, 0 to 5 V) |
| Current per circuit | 500 mA |
| Supply voltage | 5 to 20 V (encoder) |
| Supply current | 100 mA (encoder) |
| Mounting | End of shaft |
| Max speed | 10 000 rpm |
| Running torque | 0.021 N·m (3 in-oz without seals) |
| Rotor diameter | 50.8 mm |
| Seals | None (sealed against dust) |
| Operating temperature | −40 to 85 °C |
| Connections | Connector · Solder terminals (stator: radial Bendix PT circular connector; rotor: solder terminals) |
| Angle accuracy | ≤ 0.25° (maximum cumulative error) |
|---|---|
| Circuits | 20 |
| Rotation sensor | Encoder |
| Encoder resolution | 512 ppr |
| Encoder electronics | None |
| Embedded amplifier | None |
| Max peak contact noise | ≤ 100 mΩ |
| Encoder signals | A · B · Index · A⊕B (A and B in quadrature, 1 ppr index, 0 to 5 V) |
| Current per circuit | 500 mA |
| Supply voltage | 5 to 20 V (encoder) |
| Supply current | 100 mA (encoder) |
| Mounting | End of shaft |
| Max speed | 4 000 rpm |
| Running torque | 0.021 N·m (3 in-oz without seals) |
| Rotor diameter | 50.8 mm |
| Seals | None (sealed against dust) |
| Dimensions | length 93 mm (without mating connectors) |
| Weight | 369 g (without mating connectors) |
| Operating temperature | −40 to 85 °C |
| Connections | Connector · Solder terminals (stator: radial Bendix PT circular connector; rotor: solder terminals) |
| Angle accuracy | ≤ 0.25° (maximum cumulative error) |
|---|---|
| Circuits | 36 |
| Rotation sensor | Encoder |
| Encoder resolution | 512 ppr |
| Encoder electronics | None |
| Embedded amplifier | None |
| Max peak contact noise | ≤ 100 mΩ |
| Encoder signals | A · B · Index · A⊕B (A and B in quadrature, 1 ppr index, 0 to 5 V) |
| Current per circuit | 500 mA |
| Supply voltage | 5 to 20 V (encoder) |
| Supply current | 100 mA (encoder) |
| Mounting | End of shaft |
| Max speed | 2 400 rpm |
| Running torque | 0.021 N·m (3 in-oz without seals) |
| Rotor diameter | 50.8 mm |
| Seals | None (sealed against dust) |
| Dimensions | length 115 mm (without mating connectors) |
| Weight | 369 g (without mating connectors) |
| Operating temperature | −40 to 85 °C |
| Connections | Connector · Solder terminals (stator: radial Bendix JT circular connector; rotor: solder terminals) |
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The stator always has a radial circular connector (X).
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None for SR10M/E512/X.
Guides and notes
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Datasheets and manuals
CAD models
Guides and notes
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