Monorail Guidance Systems

Preload
Influence of preload Preload increases the rigidity of the bearing arrangement
(reduced deflection), the equivalent bearing load and the
guidance accuracy.
Preload and damping The damping of linear guidance systems based on rolling elements
is not influenced by preload. A significant level of damping is
only achieved by means of additional design measures, such as the
damping carriage RUDS..-D for RUE.
Attention! The approximate calculation of the equivalent static and dynamic
load, see page 21, does not take bearing preload into consideration.
Under low load and high preload, the values for rating life and static
load safety factor may be lower than those calculated using the
approximation formulae for equivalent static and dynamic load.
The correct preload is only achieved once the guidance system is
completely assembled (due to deflection of the back of the
carriage).
Preload class
and suitable applications
Preload class Preload setting Suitable applications
Linear recirculating roller bearing and guideway
assemblies RUE..-D, RUE..-E (-L-KT) 2)
V3 0,1 · C ■ High alternating load
■ Particularly high rigidity
■ Moment load
Linear recirculating ball bearing and guideway assemblies KUSE
V1
1)
0,04 · CII ■ High rigidity
■ Moment load
V2 0,13 · C II 1) ■ Alternating load
■ Particularly high rigidity
■ Moment load
Linear recirculating ball bearing and guideway assemblies KUVE..-B (-KT) 2)
V1 0,04 · C ■ High rigidity
■ Moment load
V2 0,1 · C ■ Alternating load
■ Particularly high rigidity
■ Moment load
Linear recirculating ball bearing and guideway assemblies KUE
V0 Very small clearance
to clearance-free
1) Basic dynamic load rating CII in tensile direction.
2) Other preload classes available by agreement.
■ Smooth-running
■ Moment load
V1 Clearance-free ■ High rigidity
■ Moment load
36 PF 1 Schaeffler Group Industrial