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Title:
ROLLING BEARING, GREASE REPLENISHING DEVICE, MAIN SHAFT DEVICE, GREASE REPLENISHING METHOD, AND GREASE REPLENISHING PROGRAM
Document Type and Number:
WIPO Patent Application WO/2004/011817
Kind Code:
A1
Abstract:
A main shaft device comprising a rolling bearing rotatably supporting a main shaft in a housing and consisting of an outer ring having an outer ring raceway surface in its inner peripheral surface, an inner ring having an inner ring raceway surface in its outer peripheral surface, and rolling elements rollably installed between the outer and inner ring raceway surfaces, and a grease replenishing device replenishing grease into the rolling bearing, the main shaft device being characterized in that the grease replenishing device replenishes grease so that a single replenishing amount is 0.004 cc - 0.1 cc.

Inventors:
Matsuyama, Naoki c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Azumi, Saburou c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Koiwa, Yuu c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Aoki, Mitsuho c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Morita, Yasushi c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Inagaki, Yoshifumi c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Sugita, Sumio c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Inaba, Ken c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Yakura, Kenji c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Application Number:
PCT/JP2003/009612
Publication Date:
February 05, 2004
Filing Date:
July 29, 2003
Export Citation:
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Assignee:
NSK LTD. (6-3 Ohsaki 1-chome, Shinagawa-ku, Tokyo, 141-8560, JP)
Matsuyama, Naoki c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Azumi, Saburou c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Koiwa, Yuu c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Aoki, Mitsuho c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Morita, Yasushi c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Inagaki, Yoshifumi c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Sugita, Sumio c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Inaba, Ken c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
Yakura, Kenji c/o NSK Ltd. (5-50 Kugenumashinmei 1-chom, Fujisawa-shi Kanagawa, 251-8501, JP)
International Classes:
B23Q11/12; F16C33/66; (IPC1-7): F16C33/66; F16C33/58; F16C37/00; F16C41/00; F16C19/16; F16C19/26; F16N13/16; F16N29/02; B23Q11/12
Domestic Patent References:
WO1994021932A21994-09-29
Foreign References:
JP2002130590A2002-05-09
EP1197702A12002-04-17
JPH0968231A1997-03-11
JPH0278247U1990-06-15
JPH08309643A1996-11-26
JPH0633942A1994-02-08
JP2001263580A2001-09-26
JPH09317778A1997-12-09
JP2001241451A2001-09-07
JPH0545245U1993-06-18
JPH09108986A1997-04-28
JPH11324882A1999-11-26
JP2003083343A2003-03-19
JP2003074567A2003-03-12
JP2003049850A2003-02-21
JPS6467331A1989-03-14
JPH04132220A1992-05-06
JPH0635659A1994-02-10
JPH0635653A1994-02-10
JP2003113846A2003-04-18
JPS6353397A1988-03-07
JP3167034B22001-05-14
JPH0587293A1993-04-06
JPH0629742U1994-04-19
JPH11270789A1999-10-05
Other References:
See also references of EP 1541884A4
Attorney, Agent or Firm:
Oguri, Shohei (Eikoh Patent Office, 28th Floor ARK Mori Building, 12-32, Akasaka 1-chom, Minato-ku Tokyo, 107-6028, JP)
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