by 
The speed of the bearing is mainly constrained by the temperature rise caused by the conflict and heating inside the bearing; When the speed exceeds a certain boundary; The bearing will not rotate continuously due to burns, etc The limit speed of bearing refers to the boundary value of continuous rotation without conflict and heating causing burns
Therefore; The limit speed of bearing depends on the type, scale and accuracy of bearing, as well as various factors such as smoothing method, quality and quantity of Fag Inlet Bearing smoothing agent, data and type of cage, load conditions and so on
The limit speed of various bearings with smooth grease and oil (smooth oil bath) is separately contained in the bearing scale table; The numerical value shows the boundary value of Fag Inlet Bearing speed when the bearing described in the specification rotates under normal load conditions (C / P > = 13, FA / FR < = 0.25) other;
The smoothing agent is different according to its variety and trademark; It can also be superior to other Fag Inlet Bearing functions, but it is not suitable for high-speed rotation
(i.e. equivalent dynamic load p exceeds about 8% of basic additional dynamic load C); Or when the axial Fag Inlet Bearing load in the accepted component load exceeds 25% of the radial load; Correct the limit speed with the following formula
Na = F1 * F2 * n where Na: limit speed after correction; RPM F1: correction factor related to load conditions F2: correction factor related to Fag Inlet Bearing component load n: limit speed under normal load conditions; RPM (refer to bearing scale table) C: basic additional dynamic load; N {kgf} P: equivalent dynamic load; N {kgf} fr: radial load; N {kgf} FA:
axial load; N {kgf} limit speed of ball bearing with sealing ring the limit speed of ball bearing with touching sealing ring (RS type) is constrained by the linear speed of the touching surface of the sealing ring; The Fag Inlet Bearing allowable linear speed depends on the rubber raw material of the sealing ring
What are the factors affecting bearing performance? The following is the analysis. The smelting quality and basic requirements of bearing steel the service life and reliability of rolling bearings are closely related to the smelting quality of bearing steel to a great extent. The smelting requirements of bearing steel are much stricter than those of general industrial steel.
High precision dimension requires steel for rolling bearings, which requires high dimensional accuracy, because most bearing parts have to be pressure formed. In order to save materials and improve labor Fag Inlet Bearing productivity, most bearing rings are forged,
steel balls are formed by cold heading or hot rolling, and small-size rollers are also formed by cold heading. If the dimensional accuracy of steel is not high, the blanking size and weight can not be calculated accurately, the Fag Inlet Bearing product quality of bearing parts can not be guaranteed, and it is easy to cause damage to equipment and molds.
Especially strict requirements for carbide non-uniformity. In bearing steel, if there is serious uneven carbide distribution, it is easy to cause non-uniformity of microstructure and hardness in the process of heat treatment. The structural non-uniformity of steel has a great impact on the contact fatigue strength.
In addition, the serious non-uniformity of carbide is also easy to cause cracks in the bearing parts during quenching and cooling, and the non-uniformity of carbide will also reduce the service life of the bearing. Therefore, in the bearing material standard, there are clear special requirements for steels of different specifications.