The combined elasticity and damping capacity of the rubber bushes reduces both shock loads and critical velocity. Compressed by an increasing torque, the bushes become stiffer due to the scalloping, thereby reducing the resonance effect at critical velocities.
Arrangement PB :
With brake drum This version is made up of two parts: – the standard female hub, – a male hub fitted with a brake drum.
Arrangement PD :
With brake disc This version is made up of four parts: – the standard female hub, – an intermediate part, – a brake hub, – a webbed brake disc mounted between the latter two parts (ventilated brake disk also available).