No brush contact in signal transfer
Contactless transmission removes brush wear at that interface. Inspect support bearings, couplings, alignment and fasteners as specified.
Torque, RPM & Power Meters with Custom-Bored Couplings
Build a rotary torque sensor kit with a torque, RPM and kW display and custom-bored coupling pair. Check input rate, shaft fits and options. Request a quote.
Request engineering review ↗MT-PWR-KIT / SENSOR + CONNECTION + READOUT
Match two bores.
Read torque, RPM and kW.
Specify motor and load diameters in millimeters or inches. The sensor-side bores follow the sensor drawing; coupling hubs must also suit keys, clamps and shaft engagement.
Request a three-value analyzer with the required torque input, encoder input, scaling, filtering and logging interface. Confirm whether speed is A/B quadrature or single-channel.
- 50 Nm at 6000 RPM ≈ 31.42 kW mechanical power.
- At 12,000 RPM, 1024 PPR gives 204,800 pulses/s per channel before quadrature edge multiplication.
- Four-edge A/B decoding gives 819,200 counts/s in that example; check the receiving counter.
- Signed torque and direction require an agreed channel convention.
START 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 |
Confirm included hardware before adding options.
Planning additions: encoder +$65, matched coupling pair +$140, display +$240, base plate +$85. These are budget indications, not an online offer. An included encoder or coupling pair is not added twice; the written quotation defines scope, pricing, delivery and calibration.
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.
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.