ROLLING BEARING

• Main Authors: ISHII YASUHIKO, TODA TAKUYA, OKAMOTO DAISUKE
• Format: Patent
• Language: English; Japanese
• Published: 26.04.2018
• 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

PROBLEM TO BE SOLVED: To provide a rolling bearing which can inhibit grease filling an annular space between an inner ring and an outer ring from leaking to the outside through a labyrinth gap between the inner ring and non-contact seals.SOLUTION: A rolling bearing includes: an inner ring 3; an outer ring 2; balls 4; a holder 5; and a pair of seals 6, 7 which are provided at both axial end parts of an annular space S between the inner ring 3 and the outer ring 2. The seals 6, 7 are non-contact seals which are fixed to the outer ring 2 and form labyrinth gaps 45, 55 with the inner ring 3. An outer peripheral surface 32a of a second inner shoulder part 32 of the inner ring 3 is used as a guide surface which guides rotation of the holder 5.SELECTED DRAWING: Figure 1 【課題】内輪と外輪との間の環状空間に充填されているグリースが、内輪と非接触シールとの間のラビリンス隙間から外部に漏洩するのを抑制することができる転がり軸受を提供する。【解決手段】転がり軸受は、内輪３、外輪２、複数の玉４、保持器５、及び内輪３と外輪２との間の環状空間Ｓの軸方向両端部に設けられた一対のシール６，７と、を備える。シール６，７は、外輪２に固定され、内輪３との間にラビリンス隙間４５，５５を形成する非接触シールとされており、内輪３の第２内肩部３２の外周面３２ａは、保持器５の回転を案内する案内面とされている。【選択図】図１