How to choose gear slewing bearing?

Gear rotary bearing includes four point contact ball bearing with outer teeth and inner teeth, double row ball bearing, cross cylindrical roller bearing and three row cylindrical roller bearing

The following factors should be considered when selecting the type of slewing ring:

Gear slewing bearing

1. accuracy

When accurate positioning is the key operating parameter, the cross roller slewing ring is usually used.

2. load

The load is one of the factors that determine the size of the rotary bearing. Generally, the four point contact ball bearing slewing bearing can bear heavy load and impact load. They are suitable for applications where load size and direction will change.

3. working temperature

In most cases, the allowable operating temperature of the slewing ring depends mainly on the gasket and sealing material used for lubrication. The allowable operating temperature range is -25 to 70

4. vibration

For applications involving vibration, it is suitable to pre load four point contact ball bearing and cross cylindrical roller bearing.

5. driving speed

The friction force produced by the four point contact spherical ring is less than that of the cross roller bearing. The four point contact spherical slewing ring also has a high speed.

6. sealing

Sealing is very important for the performance of the slewing ring. The qualified seal for slewing bearing can provide good moisture-proof and pollution protection, and can guarantee the function of grease.