Linear guidance systems have a low, uniform resistance to displacement.

The factors influencing friction are:

• the load
• the preload
• the traverse velocity
• the lubricant (viscosity and quantity)
• the temperature
• any misalignment
• the degree of sliding behaviour in the seals.

At initial operation and relubrication, the coefficient of friction increases temporarily due to the fresh grease. After a short running‑in period, however, the coefficient of friction returns to its original lower value.

The friction behaviour is determined significantly by the characteristics of the grease used. The consistency and base oil viscosity serve as approximate guide values.

Systems have an increased resistance to displacement after initial greasing.

Contact seals increase the total friction of the linear guidance system.

The seal friction is at its highest in new guidance systems. It decreases after the running-in period.

Additional wiper variants (accessories) increase the friction to differing extents depending on the seal design.

Friction values are available by agreement.