Bearings – Rotary bearing – Antifriction bearing
Patent
1996-10-24
2000-03-07
Hannon, Thomas R.
Bearings
Rotary bearing
Antifriction bearing
384520, F16C 1908
Patent
active
060331208
ABSTRACT:
A compound bearing assembly for a swing arm of a hard disc drive is disclosed, which comprises a stepped shaft 1 having a large-diameter portion and a small-diameter portion 1b, the large-diameter portion 1a having an inner raceway groove 2a directly formed in the outer periphery, a distinct-component outer race ring 3 disposed around the large-diameter portion 1a and having an outer raceway groove 2b formed in the inner periphery, a plurality of balls provided between the inner and outer raceway grooves 2a and 2b, a ball bearing unit 5 having an inner and an outer race ring 5a and 5b and a plurality of balls 6 provided therebetween, the inner race ring 5a being fitted on the small-diameter portion 1b of the stepped shaft, and a sleeve-like spacer 1 between the distinct-component outer race ring 3 and the outer race ring 5b of the ball bearing unit 5 and having opposite end small-diameter portions, on which the outer race rings 3 and 5b are fitted, respectively.
REFERENCES:
patent: 2858200 (1958-03-01), Boullion
patent: 5106210 (1992-04-01), Chi
patent: 5509198 (1996-04-01), Takamizawa et al.
patent: 5556209 (1996-09-01), Obara et al.
Hannon Thomas R.
Minebea Kabushiki-Kaisha
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