To provide a rolling bearing unit for a water pump capable of solving a problem wherein change of a shape of a housing is unnecessary and the number of kinds of outer rings is increased and reducing manufacturing cost.
This rolling bearing unit 1 for the water pump is provided with a rotary shaft 10 which has a large diameter shaft part 11 and a small diameter shaft part 12 and in which the large diameter shaft part 11 is an inner ring, a fixed cylinder 13 inserted into the large diameter shaft part 11 externally, and rolling bodies 14, 15 in two rows arranged between the large diameter shaft part 11 and the fixed cylinder 13. The rolling body 15 in one row has an outer ring 21, an inner ring 22, and a ball 23 arranged between both rings 21 and 22 and is pressed in between the small diameter part 12 of the rotary shaft 10 and the fixed cylinder 13 in a ball bearing.
JP2020197141 | PUMP FOR OIL FIELD |
JP2002221181 | MOTOR |
JP4107886 | Axial flow pump |
Einosuke Kishimoto
Akira Watanabe
Kiyosue Yasuko
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