Mori Seiki Co., Ltd.

Takahiro Nishiki

Akihiro Mochizuki

Hidenori Saraie

Kazuya Fujioka

A bearing unit capable of withstanding a large axial force based on a simple structure including: a bearinghaving an internal ringfitted to an inside member, an outer ringfitted to an outside member, lots of rolling elementsdisposed between the outer ringand the inner ring; and a transmitting direction shifting means A transmitting an axial force F from the inner ringto the outside memberwhen the axial force F transmitted from the inside memberto the internal ringexceeds a predetermined value or above, and a main spindle device of a machine tool, which is provided with the bearing unit, are provided.

Growing community of inventors

Yamatokoriyama, Japan

Takahiro Nishiki