PLASTIC MOLDED PRODUCT AND ROLLING DEVICE

• Main Authors: YATANI KOICHI, YOSHIKAWA TAKEFUMI
• Format: Patent
• Language: English
• Published: 05.06.2008
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BEARINGS; BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL PROCESSES OF COMPOUNDING; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; WEAPONS; WORKING-UP

PROBLEM TO BE SOLVED: To provide a plastic molded product usable as a component of a rolling device with excellent wear resistance and lubricity, and also provide a rolling device excellent in wear resistance and lubricity. SOLUTION: An angular ball bearing comprises an inner ring 1, an outer ring 2, a plurality of rolling elements 3 disposed between both raceway surfaces thereof to freely roll, and a retainer 4 for retaining the rolling elements 3 between both the raceway surfaces. The retainer 4 is formed of a polyether ether ketone resin, and subjected to impregnation treatment by bringing it into contact with a solved matter of supercritical carbon dioxide and an extreme pressure agent and removing only supercritical carbon dioxide of the penetrated extreme pressure agent and supercritical carbon dioxide. By such impregnation treatment, the extreme pressure agent is impregnated in a part 100 μm deep from the surface of the retainer. COPYRIGHT: (C)2008,JPO&INPIT