The invention relates to a stable and precise pressing machine for snap spring bearings. The machine comprises a frame and a power distribution control box; the frame is provided with a snap spring positioning and loading device matched with bearings on a pressing and carrying device; the snap spring positioning and loading device comprises a snap spring loading base; the snap spring loading baseis provided with a snap spring loading and lifting cylinder; the snap spring loading and lifting cylinder is connected with a snap spring loading and lifting base; the snap spring loading and liftingbase is connected with a first snap spring loading movable block through a first snap spring loading movable cylinder; the first snap spring loading movable block is provided with a clamping ring positioning and loading hole with a T-shaped section; and the upper part of the clamping ring positioning and loading hole is matched with snap springs, and the lower part is sleeved and matched with thebearings. The machine adopts the first snap spring loading movable block, provided with a hole for matching with the bearings, to convey the snap springs, so that precise butt joint between the snap springs and the bearings can be guaranteed, the snap springs are always located in a horizontal state in the pressing process, and are in high-precision fit with the bearings, and the pressing yield isgreatly improved.