LINEAR SLIDING BALL BEARING, PRODUCTION THEREOF, AND LINEAR SLIDING TABLE COMPRISING THE SAME

摘要

The present invention provides a linear slide ball bearing light in weight and suitable for guiding a high speed reciprocal movement, the linear slide ball bearing comprising a bearing case formed of a molded light weight material such as synthetic resin and aluminum, a pair of bearing races formed of a rigid material and attached to the bearing case, the bearing races being provided with no-load guide grooves for forming no-load ball guide holes in cooperation with no-load ball guide grooves on the bearing case side and load ball grooves, a raceway table having a rolling groove at the position corresponding to that of the load ball groove of each bearing race furnished in the bearing case, a pair of side covers fitted to both the left and right sides of the bearing case and provided with guide grooves in the inside surfaces in the circumferential direction for forming endless tracks by making both the ends of the no-load ball guide holes and the load ball grooves communicate with each other, and a number of balls rolling in the endless track for supporting loads between the load ball grooves of each bearing race and the rolling grooves of the raceway table. The present invention also provides a method for the above linear slide ball bearing and provides a linear slide table incorporating the linear slide ball bearing.