TWHR2000 wheel torque transducer
High-resolution wheel torque transducer for highway trucks, 2.7 kN·m (2,000 lbf·ft) full scale, resolving 1.5 N·m, with a 27 kN·m mechanical stop.
- 2.7 kN·m
- Torque capacity
- 1.5 N·m
- Resolution
- 22.5 in and larger
- Rim size
- 0.15 % FS
- Non-linearity
- Sensor4-arm strain gage bridge
- Hysteresis≤ 0.05 % FS
- Signal transmissionslip ring or telemetry
TWHR2000: high-resolution truck wheel torque transducer, 2.7 kN·m
The TWHR2000 is a high-resolution wheel torque transducer for highway trucks that gives one channel of torque data. Its four-arm strain gage bridge measures up to 2.7 kN·m (2,000 lbf·ft) and resolves 1.5 N·m (1 lbf·ft); a mechanical stop protects it to 27 kN·m. The stainless steel body, sealed to IP67, carries a static weight of 5,000 kg and adapts to 22.5 in and larger wheels. Non-linearity is 4 N·m (0.15 % of full scale), crosstalk from vertical load below 0.5 % and hysteresis 0.05 %; excitation is 10 V maximum and the operating range −40 to 125 °C.
A hub adapter and inside and outside rim adapters are made from a profile of the original rim and duplicate its critical dimensions; the transducer is used on single, dual or super single wheels. The signal leaves the wheel through an amplifier and slip ring package, with rotating amplification, high-resolution speed and wheel position signals and shunt calibration control, or through an RF telemetry package. Calibration complies with ISO 9001 requirements, with reference equipment traceable to NIST.
It measures rolling resistance, brake drag, bearing drag and aerodynamic drag on highway trucks, and is used for regulatory CO2 emissions and fuel consumption testing under Commission Regulation (EU) 2017/2400. Its wheel torque is also compared with the torque into the axle to find the axle efficiency.
Specifications
| Torque capacity | 2 700 N·m |
|---|---|
| Mechanical stop | 27 000 N·m |
| Max static load | 5 000 kg |
| Non-linearity | ≤ 0.15 % FS (4 N·m) |
| Hysteresis | ≤ 0.05 % FS |
| Crosstalk | ≤ 0.5 % FS (from vertical load (Fz)) |
| Torque resolution | 1.5 N·m |
| High resolution | Yes |
| Sensing principle | Strain gage (4-arm bridge) |
| Excitation voltage | 10 V (maximum, DC or AC rms) |
| Operating temperature | −40 to 125 °C |
| Protection | IP67 |
| Vehicles | Highway trucks |
| Rim size | 22.5 in (and larger) |
Resources
Datasheets and manuals
Drawings
None for TWHR2000.
CAD models
None for TWHR2000.
Related applications
-
Efficiency Vehicle efficiency and power mapping Torque and speed measured at each driveline stage, from engine to wheel, so each power loss has a location. -
Efficiency Brake drag and rolling resistance Low drag torques at the wheel, read on the road with a resolution of 0.14 N·m on cars and SUVs. -
Powertrain Truck solid axle torque Drive torque on a truck solid axle, read by strain gages inside the shaft and brought out at the wheel. -
Electric EV powertrain torque Torque at each stage of the electric drivetrain, from gearbox shafts to the wheel, to see where power is lost.
If the TWHR2000 is not the one
- Need all six components Wheel force transducers
Six load components at the wheel center, while the vehicle is driven.
- Torque on the shaft instead CBT-mini
Battery-powered clamp-on telemetry transmitter for one full strain gage bridge, in an IP67 housing that straps to shafts of 25 mm or more, with a 2.4 GHz digital link.
- Torque at the power take-off PTO
Torque and speed at the power take-off, between the tractor and the implement, with nothing to modify.
A question on this product?
Wheel, vehicle, expected torque. An application engineer answers.
More details to give? Use the full contact form.