What is the difference between linear guide and roller guide

Common guide rail is mainly dividedLinear guideand roller guides. The rolling guide has a higher rated load than the linear bearing, can withstand a certain torque, and can achieve high-precision linear motion under high load. Compared with the linear guide, the roller guide has the characteristics of safety, stability and adaptability to harsh environment.

The specific difference between the linear guide and the roller guide is as follows:

1. The wear of the roller guide rail is small, which can greatly extend the service life of the guide rail and equipment. If the lubricant is not provided in time between the moving metal materials, it will cause more serious wear problems and affect the use. Therefore, the lubrication effect is also one of the factors to consider the quality of the rail system. Compared with the linear guide, the contact and sliding friction of the roller guide is smaller. Therefore, only a small amount of lubricant is required to meet the application requirements. In most cases, the lubricating oil supply cycle of the rolling guide is one month, and the running length is about 100 kilometers.

2. The roller guide is suitable for high-speed movement. Considering the roller guide rail andLinear guideIt is difficult to produce sliding friction heat, and the value of thermal deformation variable is relatively small, which is more than 10 times different from the application rate of linear guide.

3. In terms of safety performance, the roller guide is higher than the linear guide.

4. Roller guide rail ratioLinear guideMore stable operation.

5. The roller guide can adapt to the harsh natural environment.

The development of the guide rail is the development process of the linear motion system. The industrial guide rail appeared on the sliding guide rail early, but it was quickly eliminated due to the large friction resistance, large movement gap, short service life, and large amount of lubricating oil, and then derived the roller guide rail system, which has a safer and more stable movement System, can adapt to harsh environments.

The structure of sealing plate parts can meet the requirements of dustproof and clean room use, and the structure of ball cage can improve its sliding performance. In addition, for linear sliding conditions and loads, in order to achieve higher guiding accuracy, a structure of two guide rails or multiple sliding blocks can be adopted according to actual conditions.

Most of the performance indicators of the linear guide are determined by the structure of the rolling bearing module. The rollers on the guide rail are called "column number", and the contact surface rolling on the roller track is called "point contact number", which is suitable for showing the structure of the rolling bearing module. Such an entire row of rolling bearings can withstand torque loads even when the speed is rapidly increasing or can operate continuously for a long time under strict conditions, and can maintain its accuracy even when the speed is rapidly accelerating.

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