Rail guide system provides high flexibility

The new LLR rail guide programme features a high degree of standardisation and flexibility.

A comprehensive series of customer interviews, with product development engineers in mechanical engineering and machine supply, has led to the development of the new LLR rail guide programme from SKF Engineering Products.

The hallmarks of this new modular system are a high degree of standardisation and flexibility.

Six relatively flat and two higher carriages are available with or without ball bearings.

Static bearing capacity, lying between 7.8 and 128.5kN demonstrates the wide range covered by this new profile rail guiding system.

The dynamic bearing capacity is between 6.8 and 90.4kN.

This relatively low difference between the corresponding static and dynamic bearing capacities shows the high efficiency of the system and facilitates the planning of guiding systems.

SKF engineers specified the dynamic efficiency of the new profile rail guides with velocity at 5m/s and acceleration at 500m/s2.

As a result of the new system being designed for high dynamics, the noise level is low, with the quiet running of the balls aided by an optimised ball recirculation.

The rails and carriages are designed to allow the carriages to operate under the rails as well as on top.

Although optimal stiffness, under one-way load and without load, has been achieved, it can also be increased by using additional fixing screws in the middle of the carriages.

For clean room applications, and also in circumstances where there is a high risk of corrosion, precision class 5 steel components are available with a yellow chrome surface coating.

The integrated sealing of the carriages, together with the corrosion protection, gives high machine availability, long life times and low maintenance.

Optimal fitting of the rail guiding system in individual applications is facilitated by the availability of all carriages in various preload classes.

The LLR rail guide series consists of eight different types of carriages available in five different sizes.

Rail widths range from 15 to 45mm and system heights from between 24 and 70mm.

Although long-term lubrication is a standard feature of the LLR range, the carriages are also equipped with relubrication holes.

Between maintenance intervals these holes are blocked with metal grub screws.

Typical applications will be found in mechanical engineering and instruments, electronics production, handling and biomedical equipment.

Low breakout torque makes the LLR series particularly suitable for automated production applications, especially as a low stick-slip-effect is an important criteria in many automated processes.

The new rail guides are available with or without rail cover plates.

In addition, a complete accessory programme is also available.

As a result of their modular structure, the LLR profile rail guides can be supplied at short notice and at an attractive price.

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