DT puts trailer shock absorbers to the test
Parts provider Diesel Technic has underlined the crucial role axle shock absorbers play in trailer suspension systems, and the importance of thorough testing procedures during component development.
Axle shock absorbers are critical for safe operation, designed to minimise wear and protect suspension components and the load from vibration damage, explains Mark Todd, general manager at Diesel Technic UK & Ireland.
“The impact of shocks which are transmitted to the vehicle by uneven road surfaces are dampened by the shock absorbers,” he said.
The operating piston with the piston rod moves within an oil-filled tube. During the axial movement of the piston rod, the oil is forced through narrow channels and valves through the pistons. With the speed of the piston motion, the flow resistance and therefore the damping effect increases.
“The design and function of axle shock absorbers mean that they are inherently susceptible to wear,” Mark continued.
“It’s for this reason that we carry out extensive in-house research and development and validation work before releasing any DT Spare Parts shock absorbers to the aftermarket.”
DT Spare Parts shock absorbers are designed for a service life of 10 million cycles. Corrosion resistance is tested in a salt spray test for 500 hours, says the company, and the function of the shock absorber is guaranteed even at extreme temperatures of between -40 °C and + 70 °C.
The reinforced sheet metal casing tubes have a thickness of 2.5 mm, said to prevent premature corrosion, while the piston rod has a thickness of 22 mm and is furnished with a chrome plating of at least 25 μ. The high-quality, multi-lip piston rod seal adjusts itself to normal wear and tear, says Diesel Technic.
“Besides shock absorbers for axles, the extensive DT Spare Parts product range offers shock absorbers for cabs, as well as gas springs,” added Mark.
“And, of course, our complete trailer range not only offers shock absorbers, but also over 1,800 other items, including universal parts such as side marker lights, warning markings, bump stops and much more.”
