The rubber bushes are vulcanized onto wear-resisting brass liners which are mounted on the pins with a clearance. This allows them to rotate freely and move slightly lengthwise. The stress exerted onto the bearings is thus significantly reduced. A unique scalloped barrel shape of the bushes guarantees a uniform distribution of loads, even in case of misalignment, thus limiting the bending moment resulting from the radial force on the pins. This ensures increased durability of both bushes and pins.

Dynamic behaviour

The combined elasticity and damping capacity of the rubber bushes reduces both shock loads and critical speed. Compressed by an increasing torque, the bushes become stiffer due to the scalloping, thereby reducing the resonance effect at critical speeds.

Version PB: with brake drum 

This version is made up of two parts: 

• the standard female hub,
  
• a male hub with a brake drum.

Version PD : avec brake disc

This version is made up of four parts:

• the standard female hub,
• an intermediate pin holder,
• a brake hub,
• a solid brake disc clamped between the latter two parts (ventilated brake disk also available on demand).