Bearing support for an exercise bicycle

摘要

The ball bearing support (121) consists of a section of metal tube (122), which tends to become oval when welded to the frame of the cycle. A pair of ball bearings (123) is lodged in either end of the tube by being placed inside plastic sleeves in the form of a cup (124). These cups are force fitted into the ends of the tube and being of plastic, they conform to the out of round of the inside of the tube.