No brush contact in signal transfer
Contactless transmission removes brush wear at that interface. Inspect support bearings, couplings, alignment and fasteners as specified.
MOTOR / PUMP / E-DRIVE TEST BENCHES
Rotary torque sensors.
See what the shaft delivers.
Contactless rotary torque transducer systems.
Measure rotating torque and RPM in one shaft train. Match the sensor, custom-bored couplings and power readout to your test bench.
360°continuous rotation
Nm + RPMtorque & speed requests
CW / CCWbidirectional configuration
FIRST DECISION / YOUR MECHANICAL INTERFACE
Four ways into your shaft train.
Choose the connection, then confirm torque, maximum speed and the complete installation envelope.
01 / MT-RTR-605↗
Shaft rotary torque transducers
0.1–5,000 Nm
8,000–12,000 RPM target02 / MT-RTR-FLG↗
Bearingless flange torque meters
50–20,000 Nm
Up to 18,000 RPM target03 / MT-RTR-CPL↗
Coupling-integrated torque sensors
5–2,000 Nm
Assembly-specific confirmation04 / MT-RTR-SPL↗
Spline & pulley torque transducers
20–10,000 Nm
Assembly-specific confirmationSTART WITH THE COMBINED OPERATING ENVELOPE
Rated torque × RPM × shaft connection.
Series selection targets, subject to configuration approval. Maximum torque and maximum speed are not simultaneous ratings. Request a capacity-specific drawing and calibration specification.
| Model | Rated torque (Nm) | Max speed (RPM) | Shaft diameter (mm / inch) | Built-in output options | Integrated encoder (PPR) |
|---|---|---|---|---|---|
| MT-RTR-605 | 0.1–5,000 Nm | 8,000–12,000 RPM target | Keyed or smooth shaft · diameter by drawing | ±10 V / 4–20 mA / RS485Confirm model and pinout | 360 / 1024 requestedConfirm A/B direction support |
| MT-RTR-FLG | 50–20,000 Nm | Up to 18,000 RPM target | Rotor flange · pilot / bolt circle by drawing | ±10 V / 4–20 mA / RS485Confirm model and pinout | 360 / 1024 requestedConfirm A/B direction support |
| MT-RTR-CPL | 5–2,000 Nm | Assembly-specific confirmation | Diaphragm or bellows coupling · custom bores | ±10 V / 4–20 mA / RS485Confirm model and pinout | 360 / 1024 requestedConfirm A/B direction support |
| MT-RTR-SPL | 20–10,000 Nm | Assembly-specific confirmation | SAE / DIN spline, hex or pulley · drawing required | ±10 V / 4–20 mA / RS485Confirm model and pinout | 360 / 1024 requestedConfirm A/B direction support |
TORQUE → SPEED → MECHANICAL POWER
One measurement chain.
Three useful bench values.
Request synchronized torque and speed channels, then calculate shaft power. A matched display and coupling pair make the configuration review easier.
Configure the torque / RPM / kW kit ↗MECHANICAL POWER / WORKED EXAMPLE31.42 kW
50 Nm6,000 RPM
P = T × n / 9549.2966
Illustrative calculation, not a live sensor reading.BRUSHLESS / NON-CONTACT SIGNAL TRANSFER
Remove the brush contact.
Keep the measurement discipline.
Inductive power and telemetry carry the torque signal across the rotating interface. The shaft rotates continuously; the connector and signal cable remain stationary.
Speed is a configuration rating
Review rotor geometry, capacity, balance and the full shaft train. The bearingless family targets up to 18,000 RPM on selected configurations.
Conditioning near the sensor
Request active analog or digital outputs for the PLC or DAQ. Confirm 24 V supply, bandwidth, output scaling, cable and protocol compatibility.
| Decision | Contactless telemetry | Brush / slip-ring transfer |
|---|---|---|
| Rotating signal interface | Inductive / telemetry link, no brush contact | Physical sliding contact |
| Wear review | Shaft support and mechanical assembly remain relevant | Include brush/contact inspection for that design |
| Speed & service interval | Use the model-specific specification | Use the model-specific specification |
Modern FUTEK, HBM, Magtrol and Burster models also use non-contact designs. This is a technology explanation, not a claim that those brands use brushes.
MOTOR, PUMP & GEARBOX
Pick the range from the test duty.
Minimum measurable loss, peak torque, speed ramps and inertia all affect the useful operating window.
Review your test bench ↗EXISTING SENSOR / NEW CONFIGURATION
Compare drawings before part numbers.
Start an independent FUTEK TRS605, HBM T22 or Magtrol review with the exact original capacity and revision.
Open a replacement review ↗BEFORE YOUR DRAWING REVIEW
Rotating torque sensor selection questions.
How do I specify a non-contact torque meter for inline torque measurement?
Specify the rotational torque sensor by continuous and peak torque, maximum RPM, both shaft connections and receiver input. For a bearingless telemetry torque sensor, also provide external shaft support and antenna clearance. The approved drawing defines the installed envelope.
When does a dynamic torque meter need more bandwidth?
Speed ramps, hydraulic ripple and gearbox transients can need faster response than steady-state power readings. Define the fastest event to capture, then review sensor bandwidth, DAQ sampling, anti-alias filtering and torsional resonance together. More displayed samples do not by themselves establish usable mechanical bandwidth.
Does a contactless torque sensor need an external amplifier?
The MT-RTR configuration concept includes active conditioning in the sensor. Request ±5 V, ±10 V, 0–10 V, 4–20 mA, RS485 or CAN as an option; confirm actual availability, pinout, bandwidth and scaling on the quoted model.
Can the same model deliver the largest torque and highest RPM?
Do not combine separate family maxima. Torque capacity, shaft geometry, rotor balance and speed rating are reviewed together; the approved configuration drawing defines the operating envelope.
How do torque and RPM become mechanical power?
Use P[kW] = T[Nm] × n[RPM] / 9549.2966. For 50 Nm at 6000 RPM the result is about 31.42 kW. Align measurement timing and direction; electrical efficiency also needs electrical input power.
Can you provide couplings with different motor and load bores?
Request a matched pair using both shaft diameters, fit, keyways and available axial space. The sensor-side bores follow its approved drawing. Coupling capacity, speed and balance must suit the complete shaft train.
Does non-contact transmission remove all maintenance?
It removes brush contact from the signal-transfer mechanism. Shaft-support bearings, couplings, fasteners, alignment and protective guards still need inspection. Bearingless sensors rely on external shaft support.
YOUR BENCH / YOUR SHAFT DIAMETERS
Configure the measurement.
Connect the whole bench.
Send torque and speed together. Include the motor and load shaft sizes for a matched coupling pair.
Request a range-specific drawing, output definition, calibration scope and written quotation.
CAD is supplied for the reviewed configuration. Please send non-confidential requirements first.