| 摘要 |
PURPOSE: To provide a roller bearing sufficiently lubricating, at a low cost by accommodating a lubricating pump or the part of it in the roller bearing, or fitting a rotating part of the pump to an inner ring, and fitting a casing to an outer ring. CONSTITUTION: A double row tapered roller bearing 3 is mounted to a shaft body 1 fitted with a gear 2. Tapered rollers 4, 5 are arranged between two inner rings 6, 7 and one common outer ring 8, and a lubricating pump 9 is disposed rotatingly therebetween. The casing 10 of the pump 9 is formed by the inner surface of the outer ring 8 decentered from the shaft body 1. A rotor 11 is fitted to the inner ring 6, and four oscillating vanes 12 are fitted to the peripheral surface of the rotor 11. The oscillating vanes 12 are energized by springs 13, and the tips are brought into contact with the inner peripheral wall surface of the casing 10 to partition the space of the casing 10 into four cells. The size of each cell is increased/decreased by the rotation of the shaft body 1 to suck/discharge lubricating oil. Oil is therefore fed more sufficiently than an oil tank system or an oil splash system, and the device can be manufactured at a low cost.
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