Motion Control & Drives

Linear modules with one-point lubrication simplify assembly

November 2018 Motion Control & Drives

The third generation of MKK and MKR linear modules from Tectra Automation expands the range of equipment options for the company’s linear module series. In the corrosion resistant versions, hard chrome plated ball screw drives and ball rails ensure a high resistance to chemicals.

The module consists of an anodised aluminium profile body with integrated ball rails and the option of ball screw or belt drive. Both drive types are provided for in the new generation, in sizes 65, 80 and 110. They are interchangeable with previous versions in the same dimensions and do not require large constructive adjustments. As ready to install assemblies, the new modules reduce construction and installation effort in all types of machines and systems.

One-point lubrication system

Bosch Rexroth addresses the industry-wide trend of automating maintenance work with one-point lubrication systems, thus increasing the life of the axes with a comprehensive lubrication concept. The corresponding components, ball screw drive and runner block, are ready for one-point lubrication with liquid grease or oil. Operators choosing to use their own lubricants can order the corresponding components with only corrosion prevention and complete the initial lubrication for start-up themselves. The standard version is delivered with initial lubrication making the product ready to use.

Tectra Automation supplies the ball screw drive variant of the linear module in lengths up to 5400 mm. A screw support prevents vibrations at high rotational speeds and thereby increases the application window for highly dynamic or challenging applications. Modules with belt drive are available in lengths up to 9 400 mm.

The absolute measurement system, IMS-A, can be integrated into the modules in sizes 80 and 110. From system start, it captures the exact position of the carriage directly and without a homing cycle. Using the incremental measuring principle, the IMS-A operates wear-free and is resistant to contamination and electric fields.

A new switch concept simplifies assembly and saves time. The magnetic field sensors fit directly into the profile frame without additional mounting accessories so that no interfering contours are created. This means that the space-saving design is retained in practice.

Two carriages with variable centreline-to-centreline distance also accommodate larger attachments with increased system rigidity and the use of centring holes in the carriages and frame produces a form-fitting connection, which substantially simplifies any adjustment work.

For more information contact Julie van den Berg, Tectra Automation, +27 11 971 9400,,

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