| 1. | Results of bearing-life tests with oil-impregnated retainers here been rather spotty; the lives range from only a few to over 10, 000 hours .
对油浸保持架轴承寿命试验的结果很不一致，从几小时到一万小时以上不等。 |
| 2. | Calculating life span of type 70000c bearings through cai
型轴承寿命的计算机辅助计算 |
| 3. | Comparison is made between the three kinds of bearing arrangement modes in bearing life and gear mesh
从轴承寿命和齿轮啮合2个方面对3种布置方式进行比较。 |
| 4. | Therefore , we should not neglect the study and improvement for the service life of bearing while researching cone bits
因此，在研究钻头的同时，决不可忽视对轴承寿命的研究和改进。 |
| 5. | T he floating cushion retractor is designed to avoid putting force against the spindle bearing when unclamping tool in order to assure spindle longevity
浮动退刀装置，主轴退刀时，主轴轴承不受退刀贯作用力的重击，使退刀动作顺畅，并可延长轴承寿命及确保精度。 |
| 6. | In allusion to the default that the bearing life is shorten during using , it is specially researched to the bearing life calculation theory and the method which is to increase the bearing life
并针对碾米机在使用过程中主轴轴承寿命的离散性，分析了影响轴承寿命的因素。同时，利用动平衡解耦原理对碾米机主轴的去重积进行理论分析和计算。 |
| 7. | The vital factor affecting vibration and noise of bearings is steel balls , the ratio of the influence of noise : outside ring : inside ring : steel balls = l : 3 : 7 , the bearing life depends on steel balls near 60 %
钢球作为球轴承零件中最薄弱的环节，对球轴承振动、噪音的影响比例大致为：外圈：内圈：钢球= 1 ： 3 ： 7 ，对轴承寿命的影响也在60以上。 |
| 8. | Compared with the traditional cantilever structure , the bearing life of two - terminal bracing structure is improved by 17 . 51 times , while the contact stress of gear tooth is reduced by 45 . 7 % , and the bending stress of gear tooth is reduced by 62 . 8 %
与传统主动齿轮悬臂结构相比两端支撑结构的轴承寿命提高了17 . 51倍、轮齿接触应力降低45 . 7 % 、轮齿齿根弯曲应力减小62 . 8 % 。 |
| 9. | Damping bearing is a kind of bearing with damping ring . it is not the same as traditional bearing not only on geometry but also on material . damping ring has many merits such as perfect abrasive resistance , good noise proof ability , good self - lubricating property , excellent resistance to impact and its life length is much longer
该类轴承为带阻尼环的推力轴承，在结构和材料上跳出传统框架，阴尼环具有减振、抗噪、自润滑、耐磨、耐冲击等功能，是传统推力止推轴承寿命的数倍。 |
| 10. | The crucial technologies of highly - displacement well mainly include torque / friction and wellbore trajectory control tool , and these technologies require rock bit have the following characteristics : having gage protection ability , long axletree lifespan , wear - resisting shirt - tail and head o . d . , and high - temperature - resistant sealed system , etc
大位移井的关键技术主要有扭矩摩阻和井眼轨道控制工具，这些技术要求钻头具有以下特点：具有良好的保径能力，轴承寿命长，掌尖和掌背部位耐磨损，密封系统耐高温等。 |
