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LW50 wheel force transducer

LW50 wheel force transducer 50 kN

Six-axis wheel force transducer for passenger cars and light-duty trucks, 50 kN radial and 25 kN lateral, IP67, rated −40 to 177 °C, with slip ring or telemetry.

50 kN
Fx, Fz capacity
25 kN
Fy capacity
6.5 kN·m
Moment capacity
≤ 0.25 % FS
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

LW50: wheel force transducer for cars, 50 kN, up to 177 °C

The LW50 measures all the wheel forces and moments on passenger cars and light-duty trucks. It is rated 50 kN (11,200 lbf) on Fx and Fz, 25 kN (5,620 lbf) on Fy and 6.5 kN·m on all three moments, for a static weight of 1,020 kg. Non-linearity and hysteresis are 0.25 % of full scale or less, cross-axis sensitivity after correction 0.4 % or less. The IP67 transducer, Ø 342.90 × 21.59 mm, weighs 4.4 kg, operates from −40 to 177 °C and adapts to 12 in and larger wheels.

Its inner circle has sixteen M10 × 1.5 threaded holes, its outer circle sixteen through holes. With the outboard slip ring, the amplifier package mounts onto the transducer, adds X, Y and Z accelerations up to ±100 g and digitizes the signals; a high-resolution optical encoder gives position and speed, at 0.17°. The inboard telemetry package uses a magnetic encoder and an induction-powered stator. The CT3 box resolves the loads in real time, with zero, shunt calibration and zero angle functions, a front display and a web page over USB.

It is designed for the harshest track and off-road measurements on passenger cars and light-duty trucks, and for non-spinning applications that monitor and control laboratory test rigs.

LW50 wheel force transducer

Specifications

LW50
Measured quantitiesFx · Fy · Fz · Mx · My · Mz
Force capacityFx 50 · Fy 25 · Fz 50 kN
Moment capacityMx 6 500 · My 6 500 · Mz 6 500 N·m
Max static load1 020 kg
Non-linearity≤ 0.25 % FS
Hysteresis≤ 0.25 % FS
Crosstalk≤ 0.4 % FS (after correction)
Angle resolution0.17°
Axes6
Accelerometer range100 g (X, Y and Z)
OutputCAN FD · CAN · Ethernet · EtherCAT · Analog voltage (CAN 2.0; EtherCAT and analog with optional modules)
Signal transmissionSlip ring · Telemetry (slip ring outboard; telemetry inboard)
Shaft diameter228.6 mm (center bore)
Mounting fasteners16 × M10 × 1.5
Rim fasteners16 × Ø 10.32 mm (through)
Bolt circle255.27 mm
Rim bolt circle325.12 mm
DimensionsØ 342.9 × 21.59 mm
Weight4.4 kg
Operating temperature−40 to 177 °C
ProtectionIP67
Interface boxCT3
VehiclesPassenger cars · Light trucks
Rim size12 in (and larger)
Shown: LW50. 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.

Used with the LW50

What you add here goes into the same quote request.

  • 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.

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