| 摘要 |
The present invention comprises: a ring-shaped main body; a plurality of protrusion units extended from the main body in the axial direction and spaced from each other in the circumferential direction; and a layer unit connected to the circumferential end of the protrusion unit, provided to face each other between the adjacent protrusion units, having a curved surface toward a ball, spaced from the protrusion unit in the circumferential direction, and having a pocket unit provided between the layer units facing each other. The purpose of the present invention is to provide a plastic cage for a ball bearing with a buffer unit, having a slit formed between the layer unit and the protrusion unit. |
