Title:
DOUBLE-ROW TAPERED ROLLER BEARING UNIT AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2015/050143
Kind Code:
A1
Abstract:
Provided are: a structure for a double-row tapered roller bearing unit, the structure enabling the satisfactory contact between the rolling surfaces of double-row tapered rollers and both a first inner ring raceway (7) and a second inner ring raceway (8) to be ensured; and a method for manufacturing the double-row tapered roller bearing unit. The following adjustments are performed: the adjustment of both the tilt angle (θ1) of the first inner ring raceway (7) and the tilt angle (θ2) of the second inner ring raceway (8) before a first inner ring (10) and a second inner ring (11) are press-fitted over the fitting surface section (13a) of a hub body (12a); the adjustment of both the amount of decrease (δθa) in the tilt angle of the first inner ring raceway (7) and the amount of decrease (δθb) in the tilt angle of the second inner ring raceway (8), the decreases being caused by the press-fitting of the first inner ring (10) and the second inner ring (11) over the fitting surface section (13a); and the adjustment of the amount of increase (δθk) in the tilt angle of the first inner ring (7), the increase being caused by the formation of a crimped section (15). As a result of the above-described adjustments, the tilt angle (φ1) of the first inner ring raceway (7) and the tilt angle (Θ2) of the second inner ring raceway (8), which are measured after the formation of the crimped section (15), are brought into respective appropriate ranges.
Inventors:
HAGIWARA NOBUYUKI (JP)
Application Number:
PCT/JP2014/076215
Publication Date:
April 09, 2015
Filing Date:
September 30, 2014
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
F16C19/38; B60B35/02; F16C33/64; F16C35/063
Foreign References:
| JP2008074155A | 2008-04-03 | |||
| JP2008002537A | 2008-01-10 | |||
| JP2008256144A | 2008-10-23 | |||
| JP2000130433A | 2000-05-12 | |||
| JPH0419548B2 | 1992-03-30 |
Other References:
See also references of EP 3054184A4
Attorney, Agent or Firm:
Kiwa International (JP)
Patent business corporation Takakazu patent firm (JP)
Patent business corporation Takakazu patent firm (JP)
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