Roller bearing retainer, needle roller bearing, and method of producing roller bearing retainer

• Main Authors: ABE KATSUFUMI, OISHI SHINJI, YOSHIMURA YUGO
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2010
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

A roller bearing retainer (33) has columns (15) and a pair of circular annular rings (14). The columns (15) each includes a coulmn center portion (16), a pair of column ends (17), and a pair of column slopes (18) located between the column center portion (16) and the pair of column ends (17). The pair of circular annular rings (14) is connected to one and the other longitudinal ends of each column (15) and has flanges (19) extending radially inward from the places to which the columns (15) are connected. The column center portions (16), the pair of column ends (17), and the pair of column slopes (18) are formed by expanding the diameter of axially opposite ends of a circular tube material, and the flanges (19) are formed by axially compressing the tubular material. The wall thickness of the column center portions (16), the pair of column ends (17), the pair of column slopes (18), the flanges (19), and the pair of rings (14) is set to be less than the wall thickness of boundary portions adjacent to these porti