求翻译：轴承润滑脂也是润滑脂的一种，它是用在轴承上的润滑脂。稠厚的油脂状半固体。用于轴承的摩擦部分，起润滑和密封作用。也用于金属表面，起填充空隙和防锈作用。主要由矿物油（或合成润滑油）和稠化剂调制而成。根据稠化剂可分为皂基脂和非皂基脂两类。皂基脂的稠化剂常用锂、钠、钙、铝、锌等金属皂，也用钾、钡、铅、锰等金属皂。非皂基脂的稠化剂用石墨、炭黑、石棉。主要质量指标是滴点、针入度、灰分和水分等。用来评价轴承脂胶体稳定性的指标为分油试验、滚动轴承性能试验等。滚筒试验是测试滚压作用下稠度变化的试验方法。流动性试验是评价在低温下轴承脂可泵送性的试验方法。抗水淋性试验是评价轴承脂对水淋洗出的抵抗能力的试验方法。胶体安定性是轴承脂在贮存和使用中保持胶体稳定，液体矿油不从脂中析出的性能。机械安定性是表示轴承脂在机械工作条件下抵抗稠度变化的性能。滚珠轴承扭矩试验是评价轴承脂低温性能的一种试验方法。轴承润滑脂的使用，其目的是使轴承滚动面及滑动面间形成一层薄薄的油膜，以防止金属与金属直接接触，从而减少轴承内部摩擦及磨损，防止烧粘，滑脂对轴承作用如下：（1）减少摩擦及磨损：在构成轴承的套圈。滚动体及保持器的相互接触部分，防止金属接触，减少摩擦。磨损。（2）延长疲劳寿命：轴承的转动疲劳寿命，在旋转中，滚动接触面润滑良好，则延长。反之，油粘度低，润滑油膜厚度不好，则缩短。（3）排出摩擦热。冷却：循环给油法等可以用油排出由摩擦发生的热，或由外部传来的热，达到冷却的效果。防止轴承过热，防止润滑油自身老化。（4）其他：还有防止异物侵入轴承内部，或防止生锈。腐蚀之效果。为充分发挥以上作用，务必选用适合于使用条件的润滑方法和优质的润滑剂，设计出可清除润滑剂中尘埃及防止外部异物侵入和润滑剂泄漏的适宜密封装置。是什么意思？

Bearing grease is grease, grease on it is used in bearings. Semi-solid thick grease. Friction for bearing part, lubrication and sealing effect. Also used for metal surface, fill gaps and antirust effect. Mainly of mineral oil (or synthetic lubricant) ml and thickening agent. According to the SOAP thickeners can be divided into two non-SOAP grease and fat classes. SOAP grease thickeners used lithium, sodium, calcium, aluminum, zinc and other metal soaps, potassium, barium, lead, manganese and other metal soaps. Non-SOAP grease thickeners used graphite, carbon black, asbestos. Main quality index drop point, penetration, ash and moisture. Evaluation indicators for oil bearing grease colloid stability of test and performance test of rolling bearing. Drum roll-under test is to test test method for consistency of change. Liquidity test evaluation at low temperature test method for bearing grease pump. Water spray test is to evaluate bearing grease resistance test method for resistance to water leaching out. Colloidal stability is maintained bearing grease during storage and use of colloidal stability, performance of liquid mineral oil does not precipitate from the fat. Is the mechanical stability of bearing grease in the performance of mechanical resist thickness has change in working conditions. Ball bearing torque test is a test method for evaluation of low temperature properties of bearing grease. Bearing grease for use, its purpose is to keep the bearing rolling and sliding surface forming a thin layer of oil film between to prevent direct contact with the metal and metal, reducing internal friction and wear of the bearing to prevent burn adhesive, grease on bearing effect of is as follows: (1) reduce friction and wear: form the bearing rings. Contact part between rolling elements and cage, prevents metal contact, reducing the friction. Wear. (2) extension of fatigue life: fatigue life of bearing rotating, spinning, rolling contact surface lubrication good, extended. Conversely, low oil viscosity, lubricant film thickness is not good, is shortened. (3) discharge frictional heat. Cooling: discharged oil circulating oil methods can be used by the heat of friction occurs, or by an external heat from, achieve a cooling effect. Prevent the bearings overheating, prevent the lubricant itself ageing. (4) other: also prevent the foreign body bearing, or to prevent rusting. Effects of corrosion. For playing the role above, be sure to choose suitable conditions for the use of lubricating methods and high quality lubricants, lubricant for design clear dust and prevent the external foreign objects and lubricant leakage in the suitable sealing device.