Nsk Corporation

Yasuhiro Hirayama

Atsushi Yokouchi

Kenichi Iso

Hideki Koizumi

Hiroshi Ishiguro

Toshihisa Ohata

Kenji Okuma

In a seal-type rolling bearing, between an inner ring and an outer ring, contact-type seal plates are respectively interposed on the counter-water-drenchable side and on the water-drenchable side. On the counter-water-drenchable side, a seal plate including, in the lip leading end portion thereof, an air hole for controlling the internal and external pressures of the bearing is disposed. On the water-drenchable side, a seal plate without air hole is disposed.

Sealed ball bearing

A rolling bearing has a grease filled therein. The grease contains a perfluoropolyether oil having a straight-chain structure having a dynamic viscosity of from 40 to 160 mm,/s, preferably from 40 to 100 mm,/s, at 40&deg; C. as a base oil and a particulate fluororesin as a base oil, and a particulate polytetrafluoroethylene as a thickening agent.

Rolling bearing

Growing community of inventors

Fujisawa, Japan

Yasuhiro Hirayama