1 minute to learn about features and applications of double row ball bearing!

Features
Double row ball bearing deep groove ball bearings are suitable for use in a single row deep groove ball bearing with insufficient load capacity. For the double row ball bearing with the same outer diameter and inner diameter as the deep groove ball bearings, the width is larger, and the load capacity is also much higher than that of 62 and 63 series single row deep groove ball bearings.
The standard deep groove ball bearings are common groups of radial internal clearances.
Alignment error
When there is centering error between the inner and outer rings of double row ball bearing, it will lead to additional load. This increases the load on the balls and cages and shortens the operating life of the bearings. Therefore, the allowable angular error is only 2 arc minutes. Any larger angle error will result in an increase in noise.

Cage
Double row ball bearing are equipped with two glass fiber reinforced nylon 66 cages. The SKF suffix is ​​TN9.
Deep groove ball bearings with nylon cages can operate up to 120 °C.
The characteristics of the cage are not affected by the lubricants used for general rolling bearings, except for certain synthetic oils or greases based on synthetic oils and lubricants containing high levels of extreme pressure additives, except in high temperature applications.

Application editing
Minimum load
To get the bearings running well. Double-row ball bearing, like all ball bearings and roller bearings, must withstand a certain minimum load, especially at high speeds or high accelerations, or they can work quickly with changing load directions. Under these conditions, the inertia force of the ball and cage and the friction in the lubricant will have an adverse effect on the rolling of the bearing. There may be a damaging sliding motion between the ball and the raceway.
Use caution
In the case of starting at low temperature or where the viscosity of the grease is high, a larger minimum load may be required. The weight of the bearing, plus the external force, is usually exceeded by the minimum required load. If the minimum load is not yet reached, the bearing must be subjected to additional radial loads.

Axial load carrying capacity
If double row bearing is subjected to pure axial load, they should not exceed 0.5Co in general. Excessive axial load may significantly reduce the operating life of the bearing.