CONICAL ROLLING-ELEMENT BEARING AND METHOD FOR MANUFACTURING A CAGE FOR A CONICAL ROLLING-ELEMENT BEARING

• Main Authors: WEN, Yingyi, MIZUKI, Hironori, ISHIMORI, Yasuhiro, YUKAWA, Kinji, SAITO, Tomoharu, MAEJIMA, Hiroki, KITA, Masahiro
• Format: Patent
• Language: English; French; German
• Published: 06.05.2020
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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; PERFORMING OPERATIONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A tapered roller bearing having construction that improves durability during a state of insufficient lubrication by sufficiently lengthening the time until rotation becomes impossible due to seizure. Oil retaining concave sections 19 that are recessed outward in the radial direction are formed in portions on the inner circumferential surface of the large-diameter rim section 12 e of the retainer 5e whose phase in the circumferential direction coincides with the pockets 15e. The portion of the bottom surface of each of the oil retaining concave sections 19 that is open to the inside surface of the pocket 15e face concave section 20 that is formed in the end surface 10 on the large-diameter side of tapered roller 4a that is held inside the pocket 15e. When lubrication becomes insufficient, lubrication oil that remains in the oil retaining concave sections 19 is effectively used for lubricating areas of sliding contact between the end surfaces 10 on the large-diameter side and the inside surface in the axial direction of a large-diameter side flange section 8.