What is the friction coefficient of a linear guide rail? Friction coefficient is a physical term, and what specifically does the friction coefficient of a linear guide refer to?

The concept of friction coefficient refers to the frictional force generated by the contact of two objects divided by the vertical force. Friction is divided into static friction, sliding friction, and rolling friction, with the friction coefficient of sliding friction usually much higher than that of rolling friction. This is precisely why rolling linear guides are becoming increasingly popular and there is a trend to replace sliding linear guides. Because the friction coefficient of sliding linear guides is higher than that of rolling linear guides, and the accuracy is also lower.

Linear guides can be divided into sliding linear guides and rolling linear guides, so the friction coefficient of linear guides will vary depending on the type of linear guide, with sliding friction and rolling friction. The natural rolling friction will be relatively small, but both sliding linear guides and rolling linear guides will have their own finer classification and detailed parameters, and the friction coefficient will be different.

Comparison of Friction Coefficients of Various Linear Guides

Friction coefficient of sliding linear guide: F=0.04-0.06

Friction coefficient of rolling linear guide: F=0.0015-0.01

Friction coefficient of static pressure guide rail: F=0.0005-0.001

The friction coefficient of a linear guide is the coefficient of the frictional force generated between the guide rail and the slider during motion. The frictional force of a rolling linear guide is the rolling frictional force, and the frictional force of a sliding linear guide is the sliding frictional force. The friction coefficient of a rolling linear guide is much smaller than that of a sliding linear guide.