I often hear people talk about the stiffness of linear guides, which is an important indicator for evaluating linear guides. So, what exactly does the stiffness of linear guides refer to?

Firstly, whether it is a roller linear guide or a ball linear guide, they both have stiffness as an indicator. In terms of stiffness, it specifically refers to the force that a linear guide may encounter during motion, which may cause the linear guide to undergo certain deformation. The ability of different types and brands of linear guide pairs to resist this elastic deformation is stiffness.

Secondly, the stiffness of linear guides can be divided into two aspects: one is the stiffness of the material used to produce the linear guide, and the other is the stiffness of the linear guide or some of its components when viewed as a whole.

The stiffness of a linear guide is a proportional coefficient between the load-bearing capacity of the guide and the deformation it undergoes due to force. The stiffness of a linear guide refers to its static stiffness, while the stiffness of a linear guide refers to its ability to resist corresponding deformation displacement after being subjected to force. It should be noted that the stiffness of a linear guide should be distinguished from its strength, as they are different concepts.