The Limiting Speed Of SKF Bearings

Eric Bearing LTD provides origin HK1210 SKF Bearing

When buying SKF bearings, the problem of its limit speed. Today, let us understand this knowledge.
(1) Standard (G) tolerance SKF bearings;
(2) The radial SKF bearing only bears radial load and thrust SKF bearing only bears axial load;
(3)=0.1C (C is the basic dynamic load rating of SKF bearings);
(4) Rigid SKF bearing seat and shaft;
(5) The lubrication and cooling conditions are normal.

When SKF bearings are operated under a load of 0.1C, the contact stress between the rolling elements and the contact surface of the raceway increases, resulting in an increase in the operating temperature of the SKF bearing and the relative deterioration of the performance of the lubricant. Therefore, the limit speed of the SKF bearing Will be reduced accordingly.
For the range of C/=10, since the limit speed reduction is very small, it can be ignored, that is, f1=1.
For the radial bearing under the combined load, due to the increase in the number of rolling elements bearing the load, the friction resistance increases, the heat generation increases, the lubrication and cooling conditions deteriorate, and the force acting on the cage also increases. Therefore, it must According to the SKF bearing type and the size of the load angle, the limit speed of the SKF bearing is multiplied by a reduction factor f2 to adjust.

If the speed limit of the selected SKF bearing can not meet the requirements of use, some improvement technical measures can be used to increase it to meet more satisfactory requirements. For example, increase the tolerance difference of SKF bearings; appropriately increase the clearance; use special materials and improve the structure of the cage; change the lubrication method, such as the use of oil and gas, oil mist and jet lubrication; improve the cooling conditions.