INA轴承能达到的转速时有极限的。通常是取决于所用的润滑剂和轴承部件的材料能达到的工作温度。
INA bearing has the limit when it can achieve the speed. It usually depends on the working temperature of the lubricant and the material of the bearing parts.
轴承在达到工作温度限制时的转速，取决于轴承在滚动时因摩擦产生的热量（包括任何其它外热）和有多少热量可以从轴承带走。
The speed at which the bearing reaches the operating temperature limit depends on the amount of heat (including any other external heat) generated by friction during rolling and how much heat can be taken away from the bearing.
INA轴承的类型和尺寸、内部结构、承受的负荷、润滑和冷却条件、保持架的结构、制造的精度和游隙等，对轴承能达到的转速都有一定的影响。
The type and size of INA bearing, internal structure, load, lubrication and cooling conditions, cage structure, manufacturing accuracy and clearance, etc. have a certain impact on the bearing speed.
在相关的产品表中通常列出两个不同定义的额定转速；参考转速（跟热量有关）和极限转速（跟物理结构有关），两者是根据不同的考虑因素而定的参数。
Two different definitions of rated speeds are usually listed in the relevant product lists; the reference speed (heat-related) and the limiting speed (physical structure-related) are parameters that are determined according to different considerations.
大部份的INA轴承损坏的原因很多，比如超出原先预估的负载、非有效的密封、过紧的配合所导致的过小轴承间隙等等。这些因素中的任一因素皆有其特殊的损坏型式且会留下特殊的损坏痕迹。因此，检视损坏轴的承，在大多案例中可以发现其可能的导因。
Most INA bearings are damaged by a number of causes, such as excessive load estimates, ineffective sealing, excessive tight fit resulting in small bearing clearances and so on. Any factor of these factors has its special damage pattern and will leave special damage marks. Therefore, inspection of damaged shaft bearing can be found in most cases.
大体上来说，有三分之一的INA轴承损坏导因于疲劳损坏，另外的三分之一导因于润滑不良，其它的三分之一导因于污染物进入轴承或安装处理不当。然而，这些损坏型式亦与工业别有关。例如，纸浆与造纸工业多半是由于润滑不良或污染造成轴承的损坏而不是由于材料疲劳所致。
Generally speaking, one third of INA bearing damage is due to fatigue damage, another third due to poor lubrication, and the other third due to pollutants into the bearing or improper installation and treatment. However, these damage patterns are also related to industry. For example, the pulp and paper industry is mostly due to poor lubrication or pollution caused by bearing damage rather than due to material fatigue.