公开(公告)号：JP2002372067A

公开(公告)日：2002-12-26

申请号：JP2001183367

申请日：2001-06-18

Applicant: Ntn Corp ,  エヌティエヌ株式会社

Inventor： SAKAGUCHI AKIO ,  MAEDA KIKUO

IPC: F16D3/227 ,  F16D3/20

Abstract: PROBLEM TO BE SOLVED: To provide a constant velocity universal coupling for a propeller shaft having excellent heat-resistant dimensional stability, usable even under the operating condition of a large N-θ value and having excellent durability. SOLUTION: In this constant velocity universal coupling for the propeller shaft with a ball 4 interposed between an inner ring 1 and an outer ring 2, the outer ring 2 has a plurality of linear track grooves 9 axially extending on a cylindrical inner peripheral surface, and the inner ring 1 has a plurality of linear track grooves 8 on a convex outer peripheral surface opposedly to the track grooves 9 of the outer ring 2. Both track grooves 8, 9 are provided in cross arrangement, and the ball 4 is built in the cross part of the track grooves 8, 9. The ball 4 is held by the cage 3 arranged between the outer peripheral surface of the inner ring 1 and the inner peripheral surface of the outer ring 2. The ball 4 is formed of heat resistant steel, and the surface hardness after quenching or carbonitriding is 58HRC or more, and the maximum carbon substance dimension is 8 μm or less.

Abstract translation: 要解决的问题：为了提供具有优异的耐热尺寸稳定性的传动轴的等速万能联轴器，即使在大N-θ值的操作条件下并且具有优异的耐久性的情况下也是如此。 解决方案：外圈2在内圈1和外圈2之间具有球4的传动轴恒速万能联轴器中，具有在圆筒形内周面上轴向延伸的多个线性轨道槽9， 内环1在与外圈2的轨道槽9相对的凸形外周面上具有多个线性轨道槽8.两个轨道槽8,9设置成交叉布置，球4内置于 轨道槽8,9的横截面。球4由设置在内圈1的外周面与外圈2的内周面之间的保持架3保持。球4由耐热钢 淬火或碳氮共渗后的表面硬度为58HRC以上，最大碳物质尺寸为8μm以下。

公开(公告)号：JP2003013970A

公开(公告)日：2003-01-15

申请号：JP2001195749

申请日：2001-06-28

Applicant: Ntn Corp ,  エヌティエヌ株式会社

Inventor： TAMADA KENJI ,  FUJITA TAKUMI ,  MAEDA KIKUO

IPC: F16C33/64 ,  F16C19/30 ,  F16C19/46

Abstract: PROBLEM TO BE SOLVED: To provide a thrust needle bearing having a small amount of wear and a superior flaking-resistant life under severe operating conditions.
SOLUTION: In the thrust needle bearing having a rolling body 2 and raceway rings 1A and 1B kept in contact with the rolling body 2, carbide is extracted in a range from 10,000 pieces/mm
2 or more to less than 40,000 pieces/mm
2 at least on the surface layers of the raceway rings.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供一种在严苛的工作条件下具有少量磨损和优异的防剥落寿命的推力滚针轴承。 解决方案：在具有滚动体2的滚动轴承和与滚动体2保持接触的滚道环1A和1B的推力滚针轴承中，将碳化物从10,000个/ mm 2以上至小于40,000个/ mm 至少在滚道环的表面层上。

公开(公告)号：JP2009235449A

公开(公告)日：2009-10-15

申请号：JP2008080001

申请日：2008-03-26

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C23C8/32 ,  C21D1/06 ,  C21D9/40 ,  C22C38/00 ,  C22C38/04 ,  C22C38/22 ,  F16C33/46 ,  F16C33/56

Abstract: PROBLEM TO BE SOLVED: To provide a holder for a rolling bearing and its manufacturing method capable of providing the high durability while suppressing any increase of the weight, and enhancing the dimensional accuracy and the dimensional stability, and the rolling bearing.
SOLUTION: The holder 14 consists of steel containing, by mass, ≥0.4% and

Abstract translation: 要解决的问题：为了提供一种能够在抑制重量增加，提高尺寸精度和尺寸稳定性以及滚动轴承的同时提供高耐久性的滚动轴承保持器及其制造方法。

解决方案：保持器14由含有≥0.4％和0.7％碳，≥0.15％和≤0.35％硅，≥0.6％和≤3.3％锰以及余量为杂质的钢组成。 在包括保持器14的表面14A的区域中形成氮浓度高于内部部分14C的保持器氮富集层14B。另外，保持器富氮层14B包含贝氏体结构，并且 残留奥氏体的量被抑制在≤5体积％。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009235447A

公开(公告)日：2009-10-15

申请号：JP2008079998

申请日：2008-03-26

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C22C38/00 ,  C21D1/06 ,  C21D9/40 ,  C22C38/04 ,  C22C38/44 ,  C23C8/32 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62

CPC classification number: Y02P10/212

Abstract: PROBLEM TO BE SOLVED: To provide a rolling bearing for electrical equipment and auxiliary machinery which suppresses the occurrence of hydrogen embrittlement separation, and has improved dimensional stability, to provide a bearing component for electrical equipment and auxiliary machinery, and to provide electrical equipment and auxiliary machinery having excellent durability. SOLUTION: An outer ring 11, an inner ring 12 and balls 13 composing a bearing for an alternator is composed of a steel containing 0.7 to 1.2% carbon, 0.1 to 1.1% silicon and 0.25 to 1.5% manganese, and the balance iron with impurities. Then, an outer ring nitrogen-enriched layer 11B, an inner ring nitrogen-enriched layer 12B and a ball nitrogen-enriched layer 13B are respectively formed at regions including an outer ring load rolling surface 11A, an inner ring load rolling surface 12A and a ball load rolling surface 13A. Further, the outer ring nitrogen-enriched layer 11B, the inner ring nitrogen-enriched layer 12B and the ball nitrogen-enriched layer 13B contains a bainite structure, and the amount of retained austenite is suppressed to ≤5 vol.%. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：为了提供抑制氢脆分离的发生的电气设备和辅助机械的滚动轴承，并且具有改进的尺寸稳定性，以提供用于电气设备和辅助机械的轴承部件，并且提供电气 设备和辅助机械具有优异的耐久性。 解决方案：组成用于交流发电机的轴承的外圈11，内圈12和球13由含有0.7至1.2％的碳，0.1至1.1％的硅和0.25至1.5％的锰的钢组成，余量 铁杂质。 然后，在包括外圈负载滚动面11A，内圈负荷滚动面12A，和内圈负荷滚动面12A的区域分别形成外圈富氮层11B，内圈氮富集层12B和球氮富集层13B 滚珠承载滚动面13A。 此外，外环富氮层11B，内环富氮层12B和球氮富集层13B含有贝氏体组织，残留奥氏体的量被抑制在≤5体积％。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2008207586A

公开(公告)日：2008-09-11

申请号：JP2007043595

申请日：2007-02-23

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  OTSUKI HISASHI

IPC: B60B27/00 ,  B60B35/18 ,  F16C19/18 ,  F16C33/62 ,  F16C33/64 ,  F16C33/78 ,  F16C35/063

CPC classification number: B60B27/0094 ,  B60B27/0005 ,  B60B27/0026 ,  B60B27/0042 ,  B60B27/0084 ,  F16C19/184 ,  F16C19/186 ,  F16C33/62 ,  F16C33/64 ,  F16C2326/02

Abstract: PROBLEM TO BE SOLVED: To provide a wheel bearing device ensuring hardness and strength comparable to conventional refining product levels by enhancing strength and durability of a hub ring under rotationally bent conditions, while reducing its weight without changing the shape and size of a wheel mounting flange and without impairing its face deflection, and to provide its manufacturing method. SOLUTION: After forging, controlled cooling of a hub ring 1 is performed such that it has a troostite texture or a sorbite texture, or the mixed texture of a troostite texture and a sorbite texture, and hardness of the hub ring 1 is set in a range of 23-35 HRC. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种车轮轴承装置，其通过在旋转弯曲条件下提高轮毂环的强度和耐久性来确保与常规精炼产品水平相当的硬度和强度，同时减小其重量而不改变轮毂环的形状和尺寸 并且不损害其面部偏转，并且提供其制造方法。 解决方案：锻造后，进行轮毂环1的受控冷却，使其具有修复体组织或索氏体组织，或者耐磨组织织构和索氏体组织的混合组织，并且轮毂环1的硬度为 设定在23-35 HRC范围内。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008025794A

公开(公告)日：2008-02-07

申请号：JP2006202015

申请日：2006-07-25

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: F16C33/34 ,  F16C19/44

Abstract: PROBLEM TO BE SOLVED: To provide a needle roller bearing rolling member and a needle roller bearing, which have improved durability by suppressing the occurrence of peeling, surface crack, breakage, and hydrogen brittle separation. SOLUTION: The bearing ring 11 and a needle roller 13, constituting the thrust needle roller bearing 1, are each formed of steel which contains 0.3-0.4% C, 0.2-0.5% Si, 0.3-0.8% Mn, 0.5-1.2% Ni, 1.6-2.2% Cr, 0.1-0.7% Mo, and 0.3-0.8% V, and Fe and inevitable impurities in the rest, where V is Mo or more, the Mo and V sum is twice as much as Si or more, and the Cr, Mo and V sum is 2.3-3.5%. The hardness of a hardening treatment layer formed on the surface layer portion is Hv 700-780. The maximum grain size of carbide distributed in the hardening treatment layer is 10 μm or smaller and the area rate is 7-25%. The internal hardness is Hv 500-600. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种滚针轴承滚动体和滚针轴承，其通过抑制剥离的发生，表面裂纹，断裂和氢脆分离而具有改进的耐久性。 构成推力滚针轴承1的轴承环11和滚针13各自由钢构成，其含有0.3〜0.4％的C，0.2〜0.5％的Si，0.3〜0.8％的Mn，0.5〜 1.2％Ni，1.6-2.2％Cr，0.1-0.7％Mo和0.3-0.8％V，余量中的Fe和不可避免的杂质，其中V为Mo或更高，Mo和V和为Si的两倍 以上，Cr，Mo，V和为2.3〜3.5％。 形成在表面层部分上的硬化处理层的硬度为Hv 700-780。 分布在硬化处理层中的碳化物的最大粒径为10μm以下，面积率为7〜25％。 内部硬度为500-500赫兹。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007284737A

公开(公告)日：2007-11-01

申请号：JP2006112066

申请日：2006-04-14

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C22C38/00 ,  C21D9/40 ,  C22C38/58 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62

CPC classification number: F16C33/32 ,  F16C19/06 ,  F16C33/62 ,  F16C2361/63 ,  F16C2380/26

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member for automobile electrical system/auxiliary machinery and a rolling bearing for automobile electrical system/auxiliary machinery in which the generation of hydrogen embrittlement exfoliation is suppressed, and also the generation of peeling is suppressed. SOLUTION: In an alternator 30 where electromotive force is generated at each stator 33 by rotating a rotor 31, each outer ring 11, each inner ring 12 and each ball 13 composing a ball bearing 1 for an alternator pivoting a rotor shaft 32 to a housing 34 are composed of a steel comprising, by mass, 0.005 to 0.1% carbon, 2.0 to 5.0% silicon, 0.5 to 2.0% manganese, 8.0 to 13.0% chromium, 4.0 to 10.0% nickel and 1.0 to 5.0% copper, and the balance iron with inevitable impurities. and have a hardness of ≥55 HRC. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种汽车电气系统/辅助机械的滚动部件以及抑制氢脆剥离的产生的汽车电气系统/辅助机械的滚动轴承，抑制剥离的产生 。 解决方案：在通过旋转转子31在每个定子33产生电动势的交流发电机30中，每个外圈11，每个内圈12和每个球13构成用于使转子轴32枢转的交流发电机的滚珠轴承1 壳体34由含有0.005〜0.1％的碳，2.0〜5.0％的硅，0.5〜2.0％的锰，8.0〜13.0％的铬，4.0〜10.0％的镍和1.0〜5.0％的铜组成的钢构成， 余量铁与不可避免的杂质。 硬度≥55HRC。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007277673A

公开(公告)日：2007-10-25

申请号：JP2006108288

申请日：2006-04-11

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO

IPC: C22C38/00 ,  C21D9/40 ,  C22C38/58 ,  F16C33/32 ,  F16C33/34 ,  F16C33/62 ,  F16C33/64

Abstract: PROBLEM TO BE SOLVED: To provide a rolling member for a hub bearing, which does not need special heat treatment, has high corrosion resistance and has the extended rolling fatigue life by having sufficient hardness; a hub bearing; and a manufacturing method therefor. SOLUTION: An outer ring 2, a hub ring 3, an inner ring 8 and a ball 4, which are rolling members for the hub bearing, exist between a wheel and a vehicle body, and compose a hub bearing 1 for rotatably supporting the wheel against the vehicle body. The rolling member for the hub bearing is made from a steel material comprising, by mass%, 0.005% to 0.1% carbon, 2.0% to 5.0% silicon, 0.5% to 2.0% manganese, 8.0% to 13.0% chromium, 4.0% to 10.0% nickel, 1.0% to 5.0% copper, and the balance iron with unavoidable impurities; and has a hardness of 55 HRC or higher. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了提供不需要特殊热处理的轮毂轴承的滚动部件，具有高耐腐蚀性，并且具有足够的硬度具有延长的滚动疲劳寿命; 轮毂轴承; 及其制造方法。 解决方案：作为轮毂轴承的滚动部件的外圈2，轮毂环3，内圈8和球4存在于车轮和车体之间，并且构成用于可旋转的轮毂轴承1 将车轮支撑在车身上。 用于轮毂轴承的滚动部件由钢材制成，以质量％计含有0.005％至0.1％的碳，2.0％至5.0％的硅，0.5％至2.0％的锰，8.0％至13.0％的铬，4.0％ 10.0％镍，1.0％至5.0％铜，余量为不可避免杂质的铁; 硬度55HRC以上。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007239087A

公开(公告)日：2007-09-20

申请号：JP2006067486

申请日：2006-03-13

Applicant: Ntn Corp ,  Ntn株式会社

Inventor： MAEDA KIKUO ,  FUJITA TAKUMI

IPC: C21D1/10 ,  C21D9/40 ,  F16C33/32 ,  F16C33/34 ,  F16C33/64

CPC classification number: Y02P10/253

Abstract: PROBLEM TO BE SOLVED: To provide an induction hardening method which can enhance the strength of an article to be treated and extend the life while suppressing an increase of the manufacturing cost, and to provide a machine member and a rolling member having a high strength and the long life even in a hostile environment while suppressing the increase of the manufacturing cost. SOLUTION: The induction hardening method 10 is a method of heating the whole article to be treated (inner ring 1 of rolling bearing) with a high-frequency power and quench-hardening the article, and comprises: a temperature-controlling step 20 of adjusting the temperature of the inner ring 1 of the rolling bearing; and a quench-controlling step 30 of cooling the inner ring 1 of the rolling bearing to a temperature of the M S point or lower, from the state that a part to receive a compressive stress is heated to the high quenching temperature of the A 1 point or higher, and a site except the part to receive the compressive stress is heated to a temperature of the A 1 point or higher and lower than the high quenching temperature. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够提高待处理物品的强度并延长使用寿命同时抑制制造成本增加的高频淬火方法，并且提供一种机械构件和滚动构件，其具有 强度高，使用寿命长，同时抑制制造成本的增加。 解决方案：感应淬火方法10是以高频功率加热整个待处理物品（滚动轴承的内圈1）并使物品淬火硬化的方法，包括：温度控制步骤 20，调节滚动轴承的内圈1的温度; 以及冷冻控制步骤30，其将滚动轴承的内圈1从接受压缩应力的部分加热到的状态下冷却到M S 点以下的温度 A 1 以上的高淬火温度，以及接受压应力的部位以外的部位被加热到A 1 点以上的温度 比淬火温度高。 版权所有（C）2007，JPO＆INPIT