SEALING DEVICE AND HUB BEARING

• Main Authors: SASAKI KEI, TARUKAWA YUICHI, YAMANE SHOHEI, SHUTO YUICHI, KATO TAKUYA
• Format: Patent
• Language: Chinese; English
• Published: 05.07.2019
• Subjects: BEARINGS; BLASTING; CYLINDERS; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; PISTONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SEALINGS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

Provided are a sealing device and a hub bearing with which a reduction in torque can be achieved. The present invention is characterized in that pearskin-like recesses and protrusions are provided ona sliding surface of a foreign substance lip (side lip 121a and intermediate lip 121b) and a sliding surface of a grease lip 122, and the roughness of the pearskin-like recesses and protrusions provided on the sliding surface of the grease lip 122 is greater than the roughness of the pearskin-like recesses and protrusions provided on the foreign substance lip. 本发明提供一种可实现降低转矩的密封装置以及轮毂轴承。密封装置以及轮毂轴承的特征在于，异物用唇(侧唇(121a)以及中间唇(121b))的滑动面与润滑脂用唇(122)的滑动面上均设置有梨皮状凹凸，设置在润滑脂用唇(122)的滑动面上的梨皮状凹凸的粗糙度大于设置在异物用唇的滑动面上的梨皮状凹凸的粗糙度。