INA軸承能達到的轉速時有極限的。通常是取決于所用的潤滑劑和軸承部件的材料能達到的工作溫度。
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.
軸承在達到工作溫度限制時的轉速，取決于軸承在滾動時因摩擦產生的熱量（包括任何其它外熱）和有多少熱量可以從軸承帶走。
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軸承的類型和尺寸、內部結構、承受的負荷、潤滑和冷卻條件、保持架的結構、制造的精度和游隙等，對軸承能達到的轉速都有一定的影響。
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.
在相關的產品表中通常列出兩個不同定義的額定轉速；參考轉速（跟熱量有關）和極限轉速（跟物理結構有關），兩者是根據不同的考慮因素而定的參數。
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軸承損壞的原因很多，比如超出原先預估的負載、非有效的密封、過緊的配合所導致的過小軸承間隙等等。這些因素中的任一因素皆有其特殊的損壞型式且會留下特殊的損壞痕跡。因此，檢視損壞軸的承，在大多案例中可以發現其可能的導因。
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.
大體上來說，有三分之一的INA軸承損壞導因于疲勞損壞，另外的三分之一導因于潤滑不良，其它的三分之一導因于污染物進入軸承或安裝處理不當。然而，這些損壞型式亦與工業別有關。例如，紙漿與造紙工業多半是由于潤滑不良或污染造成軸承的損壞而不是由于材料疲勞所致。
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.