Advantages Of Stainless Steel Bearings
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Comparison Of Advantages And Disadvantages Between Cross Roller Bearing And Turntable Bearing

Turntable bearing and cross roller bearing are similar in function and structure, such as excellent performance in high rigidity, high precision, high bearing performance and high speed. More and more high-precision CNC machining equipment such as CNC indexing plate, vertical machining center and vertical grinder give up the traditional design and adopt high-precision cross roller bearing and turntable bearing with better performance.

 

Turntable bearing, also known as turntable bearing or turntable bearing in China, is a bearing type similar to the three row roller combined slewing bearing structure developed by ina company in Germany. Compared with the slewing bearing with three row roller combined structure, it has the characteristics of small size, high precision level, high rigidity, large bearing load and damage resistance. It is mainly used in high-precision CNC turntable, CNC indexing plate, vertical machining center, vertical grinder, radar, high-precision medical equipment, etc.

 

Cross roller bearing is also called cross roller bearing. The rolling body generally adopts cylindrical rollers or tapered rollers to cross each other on a single raceway. The rollers are separated by retainer or isolation block. It has high rotation accuracy, large bearing force, small overall dimension, high rotation speed and rigidity, and has a wide range of applications. It is suitable for industrial robots, welding robots, medical equipment and other mechanical fields with small load and low precision level. Turntable bearing and cross roller bearing have incomparable advantages over traditional bearings in all aspects.

 

Advantages of turntable bearing:

1. The accuracy grade of turntable bearing is much higher than that of cross roller bearing, and the radial runout and axial runout are much lower than that of cross roller bearing.

 

2. The rigidity of turntable bearing is higher than that of cross roller bearing, and the operating noise is lower than that of cross roller bearing. Therefore, in the working environment of high precision and low noise, it is much better to choose turntable bearing.

 

3. The turntable bearing is structurally fully sealed. The cross roller bearing is a fixed rubber seal. The sealing performance of the turntable bearing is better than that of the cross roller bearing. The cross roller bearing is sensitive to metal debris, which is easy to cause bearing damage, so the turntable bearing is more suitable for the field with high service life requirements.

 

4. The load bearing capacity of turntable bearing with the same size is much higher than that of cross roller bearing, and the radial size of turntable bearing is smaller than that of cross roller bearing. Turntable bearings are better at bearing larger loads and smaller radial dimensions.

Comparison Of Advantages And Disadvantages Between Cross Roller Bearing And Turntable Bearing
Advantages of cross roller bearing:

1. The cross roller bearing can be easily assembled in all directions of the main shaft, mass production can be realized through standardization and serialization, and the assembly and use are more convenient.

 

2. Cross roller bearing can bear radial and axial loads at the same time, so the structure of cross roller bearing can be much simpler than that of multiple sets of combined bearings.

 

3. The cross roller bearing consumes less lubricating grease due to its high rotation efficiency and low heat dissipation.

 

In terms of structure, the structure of turntable bearing and cross roller bearing is much simpler than that of traditional bearings. Through multiple rows of cylindrical rolling elements, considerable axial and radial bearing capacity and overturning torque can be obtained. The structure is much simpler, while traditional bearings must be arranged in sequence through multiple sets of bearings to achieve the same effect, This brings great convenience in design, assembly and installation.

 

Compared with the traditional bearing, the bearing three row roller combined slewing ring structure and the single row raceway structure of cross roller bearing occupy much less equipment space and greatly reduce the assembly difficulty. In terms of installation, the turntable bearing is more convenient to install and the mechanism design is simplified. However, the installation hole design is also added to the cross roller bearings Ru series, Xu series and xsu series, and its installation and use effect is comparable.

 

Therefore, how to select this kind of turntable bearing can be reasonably considered according to its own equipment accuracy requirements and cost, Whether to choose high-quality and cheap cross roller bearings or high-end series; In terms of maintenance, both types of bearings are designed with lubricating oil holes and oil grooves, which is convenient for bearing lubrication.

 

Advanced aviation grease is adopted, and the grease does not need to be changed frequently, which is a series of guarantee for bearing stability and service life; To sum up, turntable bearings are suitable for high-end users, such as precision CNC turntables, medical instruments, scientific research instruments, measuring equipment, etc., and cross roller bearings are suitable for precision processing equipment, such as glass grinders, rotary worktables, etc.