7.8 Cage control FORMULA-S (KS)

In every linear guideway, the cage can be shifted from the centre along the longitudinal axis. Cage creep reduces the optimal load distribution and requires a correction stroke to return the cage to a centered position. The correction stroke requires a large expense of energy.

The causes of cage creep

• High accelerations and speeds
• Vertical installation of the guideway
• Uneven load distribution
• Protruding cage
• Different heat expansion coefficients
• Design and installation (lacking rigidity and/or accuracy of the connecting structure)

The benefits of FORMULA-S

• No cage slipping and thus consistent load conditions
• Avoids correction strokes
• No force required for cage reset
• Accelerations up to 300 m/s² (30 g)
• Speed 1 m/s
• Easy to install and/or uninstall
• Extended service life
• Vacuum-compatible up to 10⁻⁷ mbar

1 Clips hold the gear rack in position (alternative fastening variants on request)

2 Rack

3 Cage with pinion

Suitable for the following guideways

• RN 3, RN 4 and RN 6
• RNG 4, RNG 6 and RNG 9

FORMULA-S meets the requirements fully in respect of productivity and cost-effectiveness. It is very robust and consists of only a few components.

Connecting structure

In the case of the connecting structure, the thickness S_min should be taken into account. The remaining dimensions correspond to the guideways RN and RNG (see chapter 5, dimensions and load capacities).