Protrusion gauge of angular contact bearings

The invention relates to testing equipment, in particular to a protrusion gauge of angular contact bearings. The protrusion gauge comprises a base and is characterized in that a first spherical measuring head is arranged on an cyclic annular end face of the upper portion of the base, a fixing bearing plate is arranged above the base, a step sleeve is fixed tightly on the lower surface of the fixing bearing plate through bolts, a through hole is formed in the center, corresponding to the base, of the fixing bearing plate, a measuring bar of the gauge is movably arranged in the through hole, a step extending to the center of the sleeve body is arranged at the lower end of the step sleeve, a load block is connected with the step sleeve, the load block comprises an upper block body, a lower block body and a middle block body used for connecting the upper block body and the lower block body, the upper block body is arranged in a cavity of the step sleeve, the middle block body is movably arranged in an inner hole corresponding to the step, and the lower block body protrudes out of the inner hole of the step. The gauge is simple in structure and convenient to operate.