Rexroth introduces MKK, MKR linear modules

Jul. 6, 2018 – The third generation of MKK and MKR linear modules from Rexroth is described as providing a “considerably expanded range” of equipment options for the familiar dimensions of the previous series.

The ready-to-install linear axes are ready to be connected to the one-point lubrication systems, the company explains. In the corrosion resistant versions, hard chrome plated ball screw drives and ball rails ensure a high resistance to chemicals. The linear module consists of an anodized aluminum profile body with integrated ball rails and the option of a ball screw drive or a belt drive. Rexroth provides both drive types in the new generation, initially 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, linear modules reduce the construction and installation effort in all types of machines and systems.

Rexroth says the corresponding components, ball screw drive and runner block are ready for one-point lubrication with liquid grease or oil. If the user is using their own lubricants, they can order the corresponding linear module components with only corrosion prevention and complete the initial lubrication for start-up by themselves. In the standard version, the manufacturer delivers the linear module with initial lubrication for ready to use.

In applications where increased corrosion resistance is required, the hard chrome plated ball screw drive, profiled rails and runner block resist NR can permanently withstand water and aggressive chemicals, says the company, noting that stainless-steel band covers with a new magnet profile enhance this resistance to media and increase the resistance to coolant/lubricants for example.