Power clamping nut from Jakob 08 August 2022

As part of its wide range of products Jakob Gruppe is also able to offer the MDR series of universally applicable power clamping nuts, as well as the MCA-S and MCA-T power clamping nuts.

With the MDR series, Jakob Antriebstechnik has a universally applicable power clamping nut with a lateral operating hexagon and throughhole thread in its range. A key design feature is a special crown gear with right angled deflection of the rotation to multiply the tightening torque.

The clamping force is built up safely and in a controlled manner in proportion to the tightening torque. This ensures high clamping forces with maximum operational safety with the simplest manual operation. With the thread size M30, for example, the heavy SW46 key that is usually required is replaced by the SW14 operating hexagon, making work much more convenient.

In connection with variable-length T-slot screws or clamping bolts, the through-thread enables a very flexible application with different clamping heights or tool thicknesses. In addition to the robust material design, the compact dimensions and especially the very low overall height are to be emphasized. This also enables use in extremely cramped installation conditions.

The MDR clamping nut is also maintenance-free under normal operating conditions and can be used in a special version up to 400°C. The nut is available in two sizes with a nominal clamping force of 120 kN or 150 kN and thread sizes from M16 to M42.

Also available from Jakob is the MCA-S and MCA-T power clamping nuts. The operation of the power clamping nuts of the MCA-S and MCA-T series is completely tool-free. The clamping nuts expanded by a star (MCA-S) or T-handle (MCA-T) enable uncomplicated operation by hand. The force amplification is achieved via the integrated planetary gear, so high clamping forces are very easy to achieve.

The automatic switchover from pre-tensioning to power tensioning is ensured by automatic switching. Thanks to their robust construction and the self-locking function of the power clamping nuts, a high degree of safety can be guaranteed. Made of nitrocarburised heat treated steel and provided with an aluminium housing cover, they can be used at operating temperatures from -30°C to +90°C.

Claire Aldridge Deputy Editor t: +44 (0) 1727 743 889

Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.

Alongside visiting numerous companies, exhibitions and conferences around the world, Claire has also interviewed high profile figures – focusing on key topics impacting the sector and making sure readers stay up to date with the latest developments within the industry.