XC differential shaft fittings in different compression performance to adjust the pressure, is able to meet the up and down rotation program to control the effect of large pressure, to promote the bearing pressure in the support point can increase the sliding performance. The smoothness of the compression rotation friction can be improved.

    Second: frequency of bearing rotation

    For the ability to control high precision pressure friction, it can avoid the loose and inflexible situation of accessories. So in the process of adjusting the bearing rotation under pressure, it is necessary to effectively promote and improve the frequency of bearing rotation, but to avoid the unstable situation of sliding compression capacity with regularity.