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Haldex unveils new lining wear sensor

LOUISVILLE, Ky. - Haldex introduced its new Electronic Lining Wear Sensor at the Mid-America Trucking Show.


LOUISVILLE, Ky. – Haldex introduced its new Electronic Lining Wear Sensor at the Mid-America Trucking Show.

The sensor continuously monitors wear on vehicle drum brake linings. The monitoring sensor clearly indicates when linings are worn out, eliminating the need for manual measuring or visual indicators, said company officials. The constant flow of data on brake lining also provides information that can be used to improve control, safety, efficiency and operating profits.

With a sensor on every wheel, wear monitoring helps to determine the optimum time to replace the vehicle’s brake linings, allowing preventive maintenance to be scheduled, preventing unexpected downtime. The Electronic Lining Wear Sensor integrates with the electronic braking system and most on-board diagnostic systems. And it easily installs onto most existing spline-types S-cam shafts by mounting to the Haldex S-ABA, then connecting the signal cable, said company officials.

Sensor operation

Because the S-cam shaft angle directly correlates to lining wear, the sensor continuously measures the angle of the S-cam shaft on the drum brake, which changes when the automatic brake adjuster alters the brake.

With two internal parts, the Electronic Lining Wear Sensor is made up of seven magnetically-sensitive Hall Effect Sensors and a built-in magnetic disc which rotates along with the S-cam shaft. A microprocessor collects data from the sensors. This data is translated into a digital signal, corresponding to the angle of the S-Cam shaft. In turn, the digital signal is converted into an analog signal before transmitting data to the vehicle. The accuracy of the sensor is better than +/-3 per cent.

About Haldex
Haldex Commercial Vehicle Systems (www.hbsna.com) is a manufacturer and distributor of heavy-duty air brake system and suspension control system components. Haldex Commercial Vehicle Systems is a part of Haldex Group.


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