LW-2T-40K wheel force transducer
Six-axis wheel force transducer for commercial vehicles, medium-duty trucks, skid steers and large forklifts, 178 kN radial and 89 kN lateral, for 15 in and larger single or dual wheels.
- 178 kN
- Fx, Fz capacity
- 89 kN
- Fy capacity
- 40 kN·m
- Moment capacity
- ≤ 0.5 % FS (Fx, Fz)
- Non-linearity
- OutputsFx Fy Fz · Mx My Mz
- Also measuredX and Z acceleration (X, Y, Z on the LW50 and LW55) · wheel speed and angle
- Signal outputanalog · CAN · Ethernet · CAN FD and EtherCAT on the CT3
- Signal transmissionslip ring or telemetry
LW-2T-40K: medium-duty wheel force transducer, 178 kN
The LW-2T-40K is the higher-capacity model of the LW-2T-30K and LW-2T-40K medium-duty wheel force transducers. Four-arm strain gage bridges give independent signals for the three forces and the camber, steer and torque moments: 178 kN (40,000 lbf) radial (Fx, Fz), 89 kN (20,000 lbf) lateral (Fy) at the tire patch, and 40 kN·m (30,000 lbf·ft) on each of Mx, My and Mz, against 133 kN, 66 kN and 30 kN·m for the LW-2T-30K. Non-linearity is 0.5 % of full scale or less on Fx, Fz and My, 0.75 % on Mx and Mz and 1.5 % on Fy. The maximum recommended static corner weight is 3,630 kg (8,000 lb). Hysteresis, crosstalk after correction, temperature range, accelerations, angular resolution and hub bolt pattern are those of the LW-2T-30K.
Adapters, bolt-up and zeroing are those of the LW-2T-30K, apart from the SAE J328 static load rating of the LW-2T-40K adapters, 8,000 lbf (3,630 kg), which should not be exceeded; the LW-2T-40K manual covers single, front and dual wheels. With an outboard slip ring, the amplifier package mounts onto the transducer, amplifies and digitizes its signals before they pass through the slip ring, and carries an optical encoder for position and speed and a removable smart chip that holds the calibration, zero and shunt values. The CT3 interface box does the real-time coordinate transformation and crosstalk correction and gives CAN FD, CAN 2.0 and Ethernet outputs, with EtherCAT and analog outputs as optional modules; it works with slip ring and telemetry systems, and is set up from an embedded webpage over USB.
Like the LW-2T-30K, it adapts to 15 in and larger single or dual wheels, one transducer measuring the combined loads of a dual wheel set or a single tire. It serves the same vehicles, from commercial vehicles and medium-duty trucks to skid steers, off-road equipment and large forklift trucks, when the loads exceed the 133 kN radial and 66 kN lateral of the LW-2T-30K.
Specifications
| Measured quantities | Fx · Fy · Fz · Mx · My · Mz |
|---|---|
| Force capacity | Fx 178 · Fy 89 · Fz 178 kN |
| Moment capacity | Mx 40 000 · My 40 000 · Mz 40 000 N·m |
| Max static load | 3 630 kg |
| Non-linearity | Fx ≤ 0.5 · Fy ≤ 1.5 · Fz ≤ 0.5 · Mx ≤ 0.75 · My ≤ 0.5 · Mz ≤ 0.75 % FS |
| Hysteresis | ≤ 0.5 % FS |
| Crosstalk | ≤ 0.5 % FS (after correction) |
| Angle resolution | 0.17° |
| Axes | 6 |
| Sensing principle | Strain gage (4-arm bridges) |
| Accelerometer range | 55 g |
| Signal transmission | Slip ring |
| Operating temperature | −40 to 125 °C |
| Interface box | CT3 |
| Vehicles | Commercial vehicles · Medium-duty trucks · Skid steers · Forklift trucks · Off-road equipment |
| Hub bolt pattern | 265 mm (and smaller) |
| Rim size | 15 in (and larger, single or dual) |
Request a quote
Unusual bolt pattern, motorsport hub, agricultural wheel: we build it around your wheel.
Used with the LW-2T-40K
What you add here goes into the same quote request.
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Measure on a steered wheel
SAC stator angle corrector
Corrects the rotation angle signal in real time for the coordinate transformation, with no over-the-wheel bracket. Internal encoder accuracy ≤ 0.25°, IP67.
Slip ring versions, with the CT3 interface box.
Resources
Datasheets and manuals
Related applications
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Durability Wheel loads on the road Three forces and three moments at each wheel, recorded while the vehicle is driven. -
Dynamics Vehicle dynamics The forces and moments at each wheel while the vehicle brakes, turns and changes lane. -
Dynamics Side slip angle Side slip angle read without contact by an optical sensor, on a wheel or on the vehicle body. -
Test rig Road simulators The loads measured at the wheel on the road, and the proof that the simulator reproduces them.
If the LW-2T-40K is not the one
- Torque only Wheel torque transducers
Drive and brake torque at the wheel, while the vehicle is driven.
- Signals from the series wheel Wheel Instrumentation System
Strain gage and thermocouple signals off a rotating wheel, on the vehicle's own wheel, on track or off-road.
- Force on a part, not a wheel TR3D-B
Three perpendicular forces from a square body, down to 25.4 mm a side.
A question on this product?
Vehicle, wheel size, expected loads. An application engineer answers.
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