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In last month's issue of
FleetWatch, we carried a story on Nissan Diesel lowering certain parts prices in an attempt to discourage the use of inferior parts. Now comes the news that BPW Axles South Africa has gone the same route on air bags.
The air bag ensures good suspension of the body and makes it possible to adjust the trailer slope using the "lifting" and "lowering" functions. BPW uses U-bellows because of their spring characteristics. They roll over the rolling piston during compression and are firmly rolled into the top plate and are bonded onto the clamping plate at the bottom by vulcanisation, which means they are guaranteed to be air-tight. The rolling piston is made from glass-fibre reinforced plastic with a steel support to give reduced weight and resistance to corrosion. The integrated bump stop protects against damage when the bags are vented. |