Title:
グリース組成物およびグリース封入軸受
Document Type and Number:
Japanese Patent JP4832724
Kind Code:
B2
Abstract:
The present invention provides a grease composition capable of securely preventing generation of a low-temperature abnormal noise when it is cold and a grease-enclosed bearing. A grease composition comprises a base oil and a thickener, wherein the base oil has a pour point not more than -50°C and a kinematic viscosity not less than 15 mm 2 /s at 40°C. The base oil is at least one oil selected from a PAO oil and a perfluoro ether oil. The thickener is at least one substance selected from a urea compound and a fluororesin. A mixing consistency of the grease composition is in the range of 250 to 350. A grease-enclosed bearing has an inner ring, an outer ring, rolling elements interposed between the inner ring and the outer ring, and a grease composition enclosed on a periphery of the rolling elements. The grease-enclosed bearing is used for an automotive electric auxiliary machine.
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Inventors:
Takayuki Kawamura
Mitsunari Aso
Masaki Egami
Mitsunari Aso
Masaki Egami
Application Number:
JP2004109558A
Publication Date:
December 07, 2011
Filing Date:
April 02, 2004
Export Citation:
Assignee:
ntn corporation
International Classes:
C10M169/02; C10M107/02; C10M107/38; C10M115/08; C10M119/22; F16C33/66; C10N20/00; C10N20/02; C10N30/00; C10N30/08; C10N40/02; C10N50/10
Domestic Patent References:
| JP2001003070A | ||||
| JP2004003596A | ||||
| JP2004026941A | ||||
| JP2005132879A | ||||
| JP2003176831A | ||||
| JP2000119673A | ||||
| JP2002250351A | ||||
| JP2000273478A | ||||
| JP2003293797A | ||||
| JP2004028326A | ||||
| JP2003269469A |
Attorney, Agent or Firm:
Wake Manipulation