Koyo品牌
Koyo Brand
机 床 主 轴 用
For Machine Tool Spindles
High Ability 系列
High Ability series
最新
The Latest
低 升 温
Low Temperature-Rise
脂 润 滑
Grease-Lubricated
角 接 触 球 轴 承
Angular Contact Ball Bearing
捷太格特（JTEKT）通过对保持架形状的改良，成功抑制了旋转升温。该产品有助于提高机床主轴组装时的生产效率，及工件的加工精度，并能有效延长轴承的使用寿命。目前该产品已经投入量产。
JTEKT Corporation (hereinafter JTEKT) has developed the “grease-lubricated angular contact ball bearing with low temperature-rise”, with the aim of improving the performance of the “High Ability Series” bearing for machine tool spindles, by optimizing the cage shape to suppress the temperature-rise during rotation and started the volume-production. This developed product contributes to the improvements in the production efficiency in assembling machine tool spindles, machining accuracy and bearing replacement intervals.
机床主轴在工作时，高速旋转会导致其升温膨胀，影响到工件的加工精度。所以，安装在主轴上的轴承需要具备“低升温”的特点。
Bearings for machine tool spindles are required to keep the temperature-rise low since the temperature-rise on the spindle causes the thermal expansion of the spindle and possibly deteriorates the machining accuracy.
另外，从操作的简便性、主轴结构设计的简单化考虑，主轴轴承多采用的是油脂润滑。但在对主轴进行组装时，为了能充分发挥润滑脂的性能，需要磨合运转一段之间。因此，为了提高生产效率，有必要缩短其磨合运转时间。
Additionally, grease lubrication, which is widely adopted as a bearing lubrication method for reasons of easy handling and simplification of the spindle structure, requires a trial run (breaking-in) to smooth the grease when the spindle is assembled. Thus reducing the time required for the breaking-in has been an issue in regards to improving the production efficiency.
基于以上两点，捷太格特的研发人员对轴承进行了重新设计，成功开发出了新的产品。
We reviewed the bearing design and have succeeded in developing a product responding to these issues.
通过“优化保持架兜孔形状”，“优化内圈和保持架之间的间隙”，实现 低升温 和 磨合时间 的缩短。
The developed product realized low temperature-rise and reduction of the time required for the breaking-in with:
(1) Optimized cage pocket shape.
(2) Optimized clearance between the inner ring and cage.
捷太格特（JTEKT）的轴承事业品牌 Koyo 以“Key of your operation”为产品理念，旨在和客户一同合作，致力于问题的解决，作为“可信赖的伙伴”为机床等各个产业的发展做出贡献。
JTEKT Corporation has newly created a tagline “Key of your operation Koyo” for the bearing brand “Koyo”. JTEKT will continue contributing to every industry including machine tools as an indispensable partner to solve customers' problems through working with customers and to provide benefits.
信息来源：捷太格特（JTEKT）官方