| 摘要 |
PROBLEM TO BE SOLVED: To reduce the production cost of an angular ball bearing furthermore by eliminating the excessive manufacturing process even if a raceway is manufactured by splitting an integrated member into two product sections at a split part. SOLUTION: The split part 5b of the integrated member 5 that connects a product part 5a of two inner rings 1 is formed so as to be thinner walled than each product part 5a of both sides by establishing an annular groove 7 on both faces of the internal and external diameters. It makes possible to reduce the production cost of the angular ball bearing furthermore by splitting the integrated member 5 with the cut-process by a wheel cutter 9 at this split part 5b eliminating the finish process of the split face and the excessive process such as an inspection of cracks. COPYRIGHT: (C)2006,JPO&NCIPI
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