Bearing grinding wheel dresser

The utility model relates to the technical field of grinding wheel dressers, and discloses a bearing grinding wheel dresser. The bearing grinding wheel dresser comprises a mounting base and a grinding wheel, a support is fixedly connected to one side of the mounting base, a groove is formed in the middle of the support in a penetrating mode, a sliding block is arranged in the groove, a rotating air cylinder is fixedly connected to the bottom of the sliding block, and a movable air cylinder is fixedly connected to one side of the rotating air cylinder; the end, away from the rotary air cylinder, of the movable air cylinder is fixedly connected with the installation base, and a diamond pen is installed at the bottom of the rotary air cylinder. And therefore, the diamond pen at the bottom can conveniently grind grinding wheels with different sizes. And through the effect of the cooling mechanism, a large amount of heat generated when the diamond pen conducts finishing and grinding on the grinding wheel is elimin