Page 5 of catalogue Miniature profile rail guides of SKF Linearsysteme GmbH

Product features
Maximum utilisation of mounting space The compact design of the SKF miniature Profile rail guides permits maximum performance on a minimum of mounting space. Dimensions and weights of Machines and installations can be further reduced. Performance For improved machinery performance, maximum speeds and accelerations under loads acting in all directions are possible. This permits more efficient processes and the reduction of cycle times. Reliability More than 90 years of SKF experience with rolling bearing geometry guarantee long product life. Maintenance intervals are extended and the service life of machines and installations is increased. Resistance The use of stainless steel in combination with plastic Components makes these guides universally applicable. The reliability in application engineering is increased and risks are eliminated.

Rails
The rails are ground on all faces. The maximum rail lengths per piece are shown in the table opposite. SKF supplies the rails in lengths according to customer requirements. The distance measurement E (see Illustration page 11) is manufactured symmetrically, depending on the rail length. Upon request, SKF can also supply special rails to customer drawings.
Rail designation LLMHR 7 LLMHR 9 / LLMWR 9 LLMHR 12 / LLMWR 12 LLMHR 15 / LLMWR 15 Maximum rail lenght per piece* 1 000 mm 1 000 mm 1 000 mm 1 000 mm

*For rail length > 1 000 mm, please contact SKF.

Carriages
A wide range of 14 different types of carriages, each available in three preload classes and with a choice between sealed and open types, permits optimum system designs tailored to the respective requirement profile.

Preload and stiffness
The determination of an appropriate preload renders the miniature profile rail guide suitable for widely varying operating conditions and changes the stiffness of the overall system. SKF recommends clearance-free systems (T0) for applications with constant load and low friction. For applications characterised by shock loads, vibration and alternating loads or torques, it is advisable to select a preloaded system (T1) and a (T2) system should be chosen for high torques and high stiffness.

Preload class T0 T1 T2

Characteristics Clearance Light clearance up to light preload Preloaded system

further preload classes upon request

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