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    Ball bearing and bearing evaluation method
    2.
    发明专利
    Ball bearing and bearing evaluation method 审中-公开

    公开(公告)号：JP2004092730A

    公开(公告)日：2004-03-25

    申请号：JP2002252850

    申请日：2002-08-30

    Applicant: Nsk Ltd ,  日本精工株式会社

    Inventor： KOIZUMI HIDEKI ,  YAMAMOTO MASAO ,  MATSUSHIMA TOSHIO

    IPC: G01M13/04 ,  F16C33/58 ,  F16C41/04

    Abstract: PROBLEM TO BE SOLVED: To provide a ball bearing that can fully withstand transportation for a long distance or the like and has improved acoustic characteristics or the like in drive by performing evaluation based on an evaluation method for accurately reproducing a transporting condition for determining specifications.
    SOLUTION: The ball bearing is a grease-sealed ball bearing having an inner ring, an outer ring, a ball, and a retainer. The groove radius of curvature in the inner ring and that in the outer ring are set to be 51.5% or more and 56% or less of a ball diameter. The ball bearing is evaluated by acoustic measurement in a state where a variation load is given in an axial direction within a range of 1/1000 or higher and less than 1000/1000 in an overriding load.
    COPYRIGHT: (C)2004,JPO

    Rolling bearing
    4.
    发明专利
    Rolling bearing 审中-公开
    滚动轴承

    公开(公告)号：JP2006083932A

    公开(公告)日：2006-03-30

    申请号：JP2004268681

    申请日：2004-09-15

    Applicant: Nsk Ltd ,  日本精工株式会社

    Inventor： SAITO SHIRO ,  SHODA TORU ,  YAMAMOTO MASAO

    IPC: F16C33/66 ,  C10M107/38 ,  C10M113/02 ,  C10M169/02 ,  C10N30/00 ,  C10N30/06 ,  C10N30/08 ,  C10N40/02 ,  C10N50/10 ,  G03G15/20

    Abstract: PROBLEM TO BE SOLVED: To provide a rolling bearing having excellent peel resistance, conductivity and heat resistance.
    SOLUTION: A rolling bearing is equipped with an inner ring 1, an outer ring 2, a plurality of balls 3 arranged between the inner ring 1 and outer ring 2 so as to be freely rollable and seals 5, 5 which are interposed between the inner ring 1 and outer ring 2 and which cover an opening part between the outer peripheral surface of the inner ring 1 and the inner peripheral surface of the outer ring 2. Since having no retainer, the rolling bearing is of a full type ball bearing for retaining the ball 3 by the inner ring 1 and the outer ring 2. A grease composition 6 is arranged in a bearing inside space provided therein with the ball 3 formed between the inner ring 1 and the outer ring 2, and sealed inside the rolling bearing by the seals 5, 5. The grease composition 6 contains fluorine oil as a base oil and carbon black as a thickener.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：提供具有优异的抗剥离性，导电性和耐热性的滚动轴承。 解决方案：滚动轴承配备有内圈1，外圈2，布置在内圈1和外圈2之间的多个滚珠3，以便可自由地滚动，密封件5,5插入 在内圈1和外圈2之间，并且覆盖内圈1的外周表面和外圈2的内周表面之间的开口部分。由于没有保持器，所以滚动轴承是全型球 轴承用于通过内圈1和外圈2保持球3.润滑脂组合物6布置在其中设置有在内圈1和外圈2之间形成的球3的轴承内空间中， 滚动轴承由密封件5,5组成。润滑脂组合物6含有作为基础油的氟油和作为增稠剂的炭黑。 版权所有（C）2006，JPO＆NCIPI

    Plastic cage for thrust ball bearing
    5.
    发明专利
    Plastic cage for thrust ball bearing 审中-公开
    用于推力球轴承的塑料球

    公开(公告)号：JP2006077964A

    公开(公告)日：2006-03-23

    申请号：JP2004265786

    申请日：2004-09-13

    Applicant: Nsk Ltd ,  日本精工株式会社

    Inventor： YAMAMOTO MASAO ,  FUJII AKIO

    IPC: F16C33/38 ,  F16C33/44

    CPC classification number: F16C19/10 ,  F16C33/3856 ,  F16C33/3887

    Abstract: PROBLEM TO BE SOLVED: To further improve reliability of a thrust bearing by surely holding a ball though a cage for the thrust ball bearing is made out of plastic.
    SOLUTION: Claws 3 approximately radially directed are formed at an opening side in the axial direction of a pocket part 2 of the cage 1. As the claws 3 are made out of plastic and elastically deformable, the ball 13 can be inserted into the pocket part 2 by utilizing elasticity of the claws 3, when the ball 3 is inserted in the pocket part 2. The ball 13 stored in the pocket part 2 is supported from axial both sides by the claws 3 at the opening side and ball engagement allowances Q at a non-opening side.
    COPYRIGHT: (C)2006,JPO&NCIPI

    Abstract translation: 要解决的问题：为了进一步提高推力轴承的可靠性，通过保持架可靠地保持推力球轴承的保持架由塑料制成。 解决方案：在保持架1的凹部2的轴向的开口侧形成有大致径向的爪3.由于爪3由塑料制成并且可弹性变形，所以可以将球13插入 当球3插入到口袋部分2中时，通过利用爪3的弹性来进行袋部2的收纳。存储在袋部2中的球13由开口侧的爪3从轴向两侧支撑，并且球接合 津贴Q在非开放方面。 版权所有（C）2006，JPO＆NCIPI

    Thrust ball bearing
    6.
    发明专利
    Thrust ball bearing 审中-公开
    推杆球轴承

    公开(公告)号：JP2005069322A

    公开(公告)日：2005-03-17

    申请号：JP2003298789

    申请日：2003-08-22

    Applicant: Nsk Ltd ,  日本精工株式会社

    Inventor： YAMAMOTO MASAO ,  FUJII AKIO ,  MURAKAMI KEIICHI ,  GUNJI KAZUHISA

    IPC: F16C33/42 ,  F16C19/10 ,  F16C33/44

    CPC classification number: F16C19/10 ,  F16C33/425 ,  F16C2240/60

    Abstract: PROBLEM TO BE SOLVED: To provide a thrust ball bearing for increasing load capacity without increase in size of the bearing.
    SOLUTION: The thrust ball bearing comprises: a first bearing ring 12 having a first raceway surface 11; a second bearing ring 14 having a second raceway surface 13; a plurality of balls 15 disposed to be capable of rolling between the first raceway surface 11 and the second raceway surface 13; and a cage 16 circumferentially holding the plurality of balls 15 at equal intervals. In the cage 16, the board thicknesses of a ball pocket part 17 and around the ball pocket 17 are thicker than the board thickness of a flange part 19 holding the balls.
    COPYRIGHT: (C)2005,JPO&NCIPI

    Abstract translation: 要解决的问题：提供一种用于在不增加轴承尺寸的情况下提高承载能力的推力球轴承。 解决方案：推力球轴承包括：具有第一滚道表面11的第一轴承环12; 具有第二滚道面13的第二轴承环14; 设置成能够在第一滚道面11和第二滚道面13之间滚动的多个滚珠15; 以及以相等的间隔圆周地保持多个球15的保持架16。 在保持架16中，球窝部17和球袋17周围的板厚比保持球的凸缘部19的板厚厚。 版权所有（C）2005，JPO＆NCIPI

    Roller bearing
    7.
    发明专利
    Roller bearing 审中-公开
    滚子轴承

    公开(公告)号：JP2003343583A

    公开(公告)日：2003-12-03

    申请号：JP2002150484

    申请日：2002-05-24

    Applicant: Nsk Ltd ,  日本精工株式会社

    Inventor： YAMAMOTO MASAO

    IPC: F16C33/66 ,  F16C33/42

    CPC classification number: F16C33/427 ,  F16C19/06 ,  F16C33/3887 ,  F16C2380/26

    Abstract: PROBLEM TO BE SOLVED: To provide a low-cost roller bearing wherein a retainer at a low temperature time and a bearing acoustic performance at a high temperature and improved, and the lifetime of the acoustic characteristics is prolonged in a wide rotating condition from a high-speed rotation to a low-speed rotation. SOLUTION: The roller bearing comprises a plurality of rolling elements rotatably held by the retainer between an inner race and an outer race, and a grease sealed therein. The retainer is a waveform pressing retainer having a specific pocket shape. The grease contains a base oil having a kinematic viscosity of 30 to 150 mm 2 /s at 40°C and containing an ester oil as an indispensable component, and at least one densifier selected out of a lithium salt of a fatty acid not containing a hydroxyl group, a lithium salt of a fatty acid containing a hydroxyl group, and their mixtures. COPYRIGHT: (C)2004,JPO

    Abstract translation: 要解决的问题：为了提供一种低成本的滚动轴承，其中在较低温度下的保持器和高温下的轴承声学性能得到改善，并且在宽的旋转状态下延长了声学特性的寿命 从高速旋转到低速旋转。 解决方案：滚子轴承包括由内圈和外座圈之间的保持件可旋转地保持的多个滚动元件和密封在其中的润滑脂。 保持器是具有特定袋形状的波形按压保持器。 润滑脂含有在40℃下运动粘度为30〜150mm×SP 2 /秒的基油，并含有作为不可或缺成分的酯油，以及选自锂盐中的至少一种致密剂 的不含羟基的脂肪酸，含有羟基的脂肪酸的锂盐及其混合物。 版权所有（C）2004，JPO

    ROLLING BEARING FOR POWER TOOL MOTOR
    9.
    发明专利
    ROLLING BEARING FOR POWER TOOL MOTOR 失效

    公开(公告)号：JP2002155959A

    公开(公告)日：2002-05-31

    申请号：JP2000351267

    申请日：2000-11-17

    Applicant: NSK LTD

    Inventor： YAMAMOTO MASAO ,  FUJII AKIO

    IPC: F16C33/78

    Abstract: PROBLEM TO BE SOLVED: To provide a rolling bearing for a power tool motor realizing a dust proof property of a bearing, low torque, long life time and compatibility with resin under rotation from a low speed to a high speed. SOLUTION: In this rolling bearing for power tool motor, a plurality of rolling elements arranged between raceway surfaces of an inner ring and an outer ring are rotationally retained at substantially equal intervals by a retainer, and a grease containing of synthetic hydrocarbon oil with a kinematics viscosity of 20 to 150 mm2/s at 40 deg.C, bended with urea compound, is sealed by a seal plate fitted into a seal groove in the outer ring. The seal plate is made of an elastic body reinforced by a metal plate, and provided at the smallest diameter side thereof with a lip which is usually in contact with a plane portion of a seal groove of the inner ring, and with a collar portion having an outer peripheral surface with a circular arc section, and a passage for discharging outside a gas within the bearing. The seal groove of the inner ring is provided with a plane portion coming into contact with the lip, and round surface portion with a circular arc section, corresponding to the collar section. Usually, a little clearance is ensured between the collar portion of the seal plate and the round surface portion of the seal groove of the inner ring.

    ROLLING BEARING
    10.
    发明专利
    ROLLING BEARING 失效

    公开(公告)号：JP2000120708A

    公开(公告)日：2000-04-25

    申请号：JP30002098

    申请日：1998-10-21

    Applicant: NSK LTD

    Inventor： YAMAMOTO MASAO ,  YOKOUCHI ATSUSHI ,  NAKA MICHIHARU ,  MUTO YASUYUKI ,  SUZUKI HIRONORI

    IPC: C10M169/02 ,  C10N10/02 ,  C10N20/02 ,  C10N40/02 ,  F16C33/41 ,  F16C33/66

    Abstract: PROBLEM TO BE SOLVED: To provide an excellent bearing sound characteristic under low temperature and high temperature and to reduce the sound of a holder at starting under low temperature by providing an axial cylindrical surface on each pocket inner surface of the holder, and sealing a grease containing a thickener consisting of a specified material and an ester oil having a specified dynamick viscosity. SOLUTION: A holder 7 has an axial cylindrical surface 18 having the peripheral side opening edge of a holder 7 as the central axis on at least a part of the inner surface of each pocket 9. A grease is sealed which contains a thickener selected from a lithium salt of fatty acid containing no hydroxyl group, a lithium salt of fatty acid containing hydroxyl group and a mixture thereof and a base oil having a kinematic viscosity at about 40 deg.C of about 30-150 mm2/s and containing an ester oil as an essential component. The grease can easily penetrate into the clearance between the inner surface of the pocket 9 and a rolling body by use of the holder 7 having the axial cylindrical surface 18, and the grease excellent in durable performance at low temperature and high temperature is used.

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