滚动轴承的组成:外圈、内圈、滚动体、保持架内圈：支撑轴外圈：支撑零件或

滚动轴承的组成:<br>外圈、内圈、滚动体、保持架<br>内圈：支撑轴<br>外圈：支撑零件或轴系<br>滚动体：滑动?滚动<br>保持架: 将滚动体分开<br>优点：摩擦阻力小、启动灵敏、效率高、润滑简便、和易于互换等。<br>缺点：抗冲击能力差、高速时出现噪音<br><br>轴承分类:<br>按载荷方向分：向心轴承和推力球轴承<br>向心轴承：主要承受径向力比如常用的（深沟球轴承）<br>推力球轴承：主要承受轴向力比如推力球轴承<br>按滚动体形状分：球轴承和滚子轴承<br>球轴承主要用于转速较高承载较低使用<br>滚子轴承主要用于承载较高及转速较低场合<br><br>尺寸系列代号:<br>表达相同内径但宽度和外径不同的轴承<br>宽度系列代号：一般正常宽度为"0"， 通常不标注。<br>但对圆锥滚子轴承(3类)和调心滚子轴承(2类)不能省略"0"。<br>外径系列代号：特轻(0、1)、轻(2)、中(3)、重(4)。<br><br>公差等级代号:<br>公差分2、4、5 、6(6x)、 0级，共五个级别 从高到底以/P2 、/P4、 /P5、 /P6(/P6x)为代号，0级不标注<br><br>滚动轴承的润滑和密封:<br><br>润滑目的--减小摩擦、减轻磨损，吸振、降温、降噪。<br>密封目的--防止灰尘、水分进入轴承，阻止润滑剂流失<br><br>滚动轴承的润滑:<br><br>润滑脂：常用<br>润滑油：高速高温<br>Solid lubricants: <br>Grease lubrication for special occasions. Advantages: not easy to drain, easy to seal and maintain, filling once, can run for a long time. <br>Oil lubrication advantages: low friction resistance, heat dissipation, and can be used in high-speed and high-temperature environments. <br><br>Rolling bearing sealing: <br>The choice of the sealing method of the rolling bearing is related to the type of lubrication, working environment, temperature, and circumferential speed of the sealing surface. <br>Contact type: Felt ring seal Seal ring seal <br>Non-contact type: Gap seal labyrinth seal <br>Combined seal: Felt labyrinth seal

滚动轴承的组成:<br>外圈、内圈、滚动体、保持架<br>内圈：支撑轴<br>外圈：支撑零件或轴系<br>滚动体：滑动?滚动<br>保持架: 将滚动体分开<br>优点：摩擦阻力小、启动灵敏、效率高、润滑简便、和易于互换等。<br>缺点：抗冲击能力差、高速时出现噪音<br><br>轴承分类:<br>按载荷方向分：向心轴承和推力球轴承<br>向心轴承：主要承受径向力比如常用的（深沟球轴承）<br>推力球轴承：主要承受轴向力比如推力球轴承<br>按滚动体形状分：球轴承和滚子轴承<br>球轴承主要用于转速较高承载较低使用<br>滚子轴承主要用于承载较高及转速较低场合<br><br>尺寸系列代号:<br>表达相同内径但宽度和外径不同的轴承<br>宽度系列代号：一般正常宽度为"0"， 通常不标注。<br>但对圆锥滚子轴承(3类)和调心滚子轴承(2类)不能省略"0"。<br>外径系列代号：特轻(0、1)、轻(2)、中(3)、重(4)。<br><br>公差等级代号:<br>公差分2、4、5 、6(6x)、 0级，共五个级别 从高到底以/P2 、/P4、 /P5、 /P6(/P6x)为代号，0级不标注<br><br>滚动轴承的润滑和密封:<br><br>润滑目的--减小摩擦、减轻磨损，吸振、降温、降噪。<br>密封目的--防止灰尘、水分进入轴承，阻止润滑剂流失<br><br>滚动轴承的润滑:<br><br>润滑脂：常用<br>润滑油：高速高温<br>固体润滑剂：用于特殊场合<br>脂润滑优点：不容易流失、便于密封和维护，充填一次，可运转较长时间。<br>油润滑优点：摩擦阻力小、能散热，可在高速、高温环境下使用。<br><br>滚动轴承的密封:<br>滚动承的密封方式的选择与润滑的种类、工作环境、温度、密封表面的圆周速度有关。<br>接触式：毛毡圈密封 密封圈密封<br>非接触式：间隙密封 迷宫式密封<br>组合式密封：毛毡迷宫式密封

Composition of rolling bearing:<br>Outer ring, inner ring, rolling element, holder<br>Inner ring: support shaft<br>Outer ring: supporting part or shafting<br>Scroll: slide? Scroll<br>Holders: separating the rolling elements<br>Advantages: small friction resistance, sensitive start, high efficiency, simple lubrication, and easy to exchange.<br>Disadvantages: poor impact resistance, noise at high speed<br>Bearing classification:<br>According to the load direction: radial bearing and thrust ball bearing<br>Radial bearing: mainly bearing radial force such as common (deep groove ball bearing)<br>Thrust ball bearing: mainly bearing axial force such as thrust ball bearing<br>According to the shape of rolling body: ball bearing and roller bearing<br>Ball bearing is mainly used for high speed and low load<br>Roller bearings are mainly used for high load and low speed applications<br>Size series code:<br>Bearing with the same inner diameter but different width and outer diameter<br>Width series code: generally, the normal width is "0", usually not marked.<br>However, "0" cannot be omitted for tapered roller bearings (Class 3) and self-aligning roller bearings (Class 2).<br>Outer diameter series code: extra light (0, 1), light (2), medium (3), heavy (4).<br>Tolerance class code:<br>Tolerance is divided into 2, 4, 5, 6 (6x) and 0 levels, with / P2, / P4, / P5, / P6 (/ p6x) as code from the top to the bottom. Level 0 is not marked<br>Lubrication and sealing of rolling bearings:<br>The purpose of lubrication is to reduce friction, wear, vibration absorption, temperature reduction and noise reduction.<br>Sealing purpose: prevent dust and moisture from entering the bearing and prevent lubricant loss<br>Lubrication of rolling bearings:<br>Grease: common<br>Lubricating oil: high speed and high temperature<br>Solid lubricants: for special occasions<br>Advantages of grease lubrication: not easy to lose, easy to seal and maintain, filling once, can run for a long time.<br>Advantages of oil lubrication: small friction resistance, heat dissipation, can be used in high-speed, high temperature environment.<br>Sealing of rolling bearing:<br>The selection of sealing method of rolling bearing is related to the type of lubrication, working environment, temperature and the peripheral speed of sealing surface.<br>Contact type: felt ring seal seal<br>Non contact: clearance seal labyrinth seal<br>Combined seal: felt labyrinth seal<br>