Pinion bearing unit
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United States of America Patent
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Aug 3, 2010
Grant Date -
Nov 6, 2008
app pub date -
Nov 14, 2007
filing date -
Nov 14, 2007
priority date (Note) -
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Abstract
A bearing unit, for supporting a pinion shaft having at one side a pinion head, includes a taper roller bearing and an angular ball bearing, the bearings having a common outer race ring and separate inner race rings. The inner race rings are spaced apart a distance along the pinion shaft, and the taper roller bearing has a contact angle α from 15° to 20° for absorbing mainly the radial force component of the tooth force at the pinion head, and the one-row angular ball bearing has a contact angle β of between 35° and 45° for absorbing mainly the axial force coming from the gear mesh and that induced by the taper roller bearing.
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