Friction moment measuring device for angular contact radial bearings

The invention relates to a friction moment measuring device for angular contact radial bearings. The friction moment measuring device comprises a device base, a spindle and a spindle driving device used for driving the spindle to rotate; a bearing mounting seat is fixed to the device base, the bearing mounting seat is provided with an inner hole for allowing the to-be-measured angular contact radial bearings to be mounted, and an outer ring stopping structure used for being in stopping fit with outer rings of the corresponding ends of the paired angular contact radial bearings combined face toface is arranged at one end of the inner hole; an axial loading device used for loading outer rings of the other ends of the angular contact radial bearings is arranged at the position, on the devicebase, of the other end of the inner hole; the spindle is provided with shaft shoulders, wherein each shaft shoulder is used for being arranged between the inner rings of the two paired angular contact radial bearings in a cla