BPW air bags are firmly rolled into the flange of the upper air bag cover 1 and vulcanised with the clamping plate at the bottom. The upper air bag cover 1 is either directly bolted to the bottom flange of the frame or a plate or mounting bracket is welded to the vehicle frame for fixing – depending on the air bag design. The air bag cover is fixed to it using two M 12 self-locking nuts. The lower air spring piston 5 is bolted to the trailing arm using two M 16 self-locking nuts.
The brands of the BPW group: