| 摘要 |
The invention provides a cage produced from plastic for ball bearings which comprises the following: a first cage part produced from plastic, on which shell-shaped ball-holding parts and flat parts are alternately provided and which has in addition recesses on the inner surfaces of at least two flat parts; and a second cage part produced from plastic, on which the ball-holding parts mentioned and the flat parts mentioned are likewise alternately provided at points which correspond to those on the first cage part, and which has projections on the inner surfaces of the flat parts; in this arrangement, the projections are fitted into recesses and the two cage parts are connected inseparably to each other. |
