RESIN-MADE CAGE FOR BALL BEARING AND BALL BEARING

RESIN-MADE CAGE FOR BALL BEARING AND BALL BEARING

In a ball bearing resin cage (20), a first cage element (30) and a second cage element (50) are combined in the axial direction. The first cage element (30) includes a pocket portion (31), a first coupling portion (32), and an engaged portion (41). The second cage element (50) includes a pocket faci...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: TORII Keisuke
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
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
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Beschreibung
Zusammenfassung:In a ball bearing resin cage (20), a first cage element (30) and a second cage element (50) are combined in the axial direction. The first cage element (30) includes a pocket portion (31), a first coupling portion (32), and an engaged portion (41). The second cage element (50) includes a pocket facing portion (51), a second coupling portion (52), and an engaging portion (53). The pocket portion (31) includes a pair of protruding portions (33) facing each other in the circumferential direction and forming a pocket surface (35), and a ball (13) is held only by the pocket surface (35) of the first cage element (30). The pocket facing portion (51) includes a partial cylindrical surface (51a) having a radius (r1) larger than a sum of a radius (R) of the ball (13) and an axial movement amount (Δa) of the first cage element (30) and the second cage element (50). Accordingly, it is possible to provide a ball bearing resin cage and a ball bearing that can prevent the generation of the stress separating the engagement of the first cage element and the second cage element engaged with each other, that can reduce the size of the engaging portion, and that has a high degree of freedom in design of the cage.