BEARING DEVICE AND ROTATING DEVICE

• Main Authors: FUTAE, Takaya, SUGIYAMA, Akihiro, MIURA, Shuichi, DAMMOTO, Yosuke, NAGAI, Naoyuki, ARAKAWA, Takuya
• Format: Patent
• Language: English
• Published: 26.05.2022
• Subjects: BEARINGS; BLASTING; 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; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; THERMAL INSULATION IN GENERAL; WEAPONS

A bearing device according to an embodiment is a bearing device for rotatably supporting a rotational shaft, the device including at least one rolling bearing which includes an inner race fixed to the rotational shaft, a rolling element, and an outer race for rotatably holding the rolling element with the inner race, and a casing for housing the rolling bearing, the casing including a plurality of first oil supply holes formed at intervals in a circumferential direction for supplying lubricant oil to a first gap between the rolling bearing and an inner circumferential surface of the casing. Each of the plurality of first oil supply holes satisfies:π·d1·δ1<π·d12/4   (a), where d1 is a diameter of an outlet opening of the first oil supply hole, and δ1 is a space of the first gap.