The structure has been improved on the basis of of the Q-type rotary joint, with the without-oil bearing double support, double sealed sphere. in the course of the spring from the fluid medium and high temperature, can be adjusted, thereby reducing the torque, more stable in operation, rotation speed of twice the compensation of the sealing surface is more stable, high temperature hot oil medium for the material is more important, our team has done a corresponding selection of parts, high speed operation at high temperatures have a more reliable guarantee.