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LW-2T-40K wheel force transducer

LW-2T-40K wheel force transducer LW series

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) · wheel speed and angle
  • Signal outputanalog · CAN · Ethernet · CAN FD and EtherCAT on the CT3

Medium-duty wheel force transducer, 178 kN

The LW-2T-40K measures all the wheel forces and moments on commercial vehicles, skid steers, medium-duty trucks, off-road equipment and large forklift trucks. Four-arm strain gage bridges give independent signals for the three forces, up to 178 kN radial (Fx, Fz) and 89 kN lateral (Fy), and for the camber, steer and torque moments, 40 kN·m each. 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; crosstalk after correction stays below 0.5 %. The weatherproof, temperature-compensated transducer fits hub bolt patterns of 265 mm and smaller and operates from −40 to 125 °C, with X and Z accelerations and 0.17° angular resolution.

Rim and hub adapters follow the LW-2T-30K/40K design guides; the LW-2T-40K manual covers single, front and dual wheels. Twenty-four M14 bolts join the transducer to each adapter, tightened to 150 N·m. After the wheel nuts, the matched amplifier and its ten-circuit slip ring bolt onto the transducer, sealed by O-rings. A restraint rod to a magnetic bracket holds the slip ring stator, or the stator angle correction device on steered wheels. The CT3 interface box, powered at 9 to 36 V DC, runs the shunt calibration and the zero, wheel lifted and turned two revolutions.

It is used for on-road and off-road measurements, one transducer measuring the combined loads of a dual wheel set or a single tire, and also to monitor and control laboratory tests.

Wheel force transducer with amplifier and slip ring assembly
Transducer, amplifier and slip ring. The slip ring and the telemetry package are swappable.

Specifications

LW-2T-40K
Measured quantitiesFx · Fy · Fz · Mx · My · Mz
Force capacityFx 178 · Fy 89 · Fz 178 kN
Moment capacityMx 40 000 · My 40 000 · Mz 40 000 N·m
Non-linearityFx ≤ 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 resolution0.17°
Axes6
Sensing principleStrain gage (4-arm bridges)
Accelerometer range55 g
Signal transmissionSlip ring
Operating temperature−40 to 125 °C
Interface boxCT3
VehiclesCommercial vehicles · Medium-duty trucks · Skid steers · Forklift trucks · Off-road equipment
Hub bolt pattern265 mm (and smaller)
Rim size15 in (and larger, single or dual)
Shown: LW-2T-40K. Download the files

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Signal transmission

By wire: amplifier, slip ring and encoder on the wheel. Not on the LW-MC-3.5K and LW12.8-50-TEL.

Options
Accessories
Your request

Unusual bolt pattern, motorsport hub, agricultural wheel: we build it around your wheel.

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