BALL CIRCULATION TUBE FOR BALL SCREW, BALL SCREW, AND BALL SCREW MANUFACTURING METHOD

摘要

Provided is a ball circulation tube for a ball screw, which is provided with a scoop-up section that can reduce the influence of machining errors. This ball circulation tube (4) is formed of, as discrete parts: a pair of scoop-up parts (43A, 43B) each having a ball scoop-up section (4a); and a circulation channel part (41) having a ball circulation channel (4j).