Think laterally – clamp laterally

With the MDR series, Jakob Antrieb­stech­nik presents a new uni­ver­sal­ly applic­a­ble pow­er clamp­ing nut with a lat­er­al­ly arranged oper­at­ing hexa­gon. The MDR series sup­ple­ments the two types of clamp­ing nut MCA and MDA, which have proven them­selves over many years in a wide range of appli­ca­tions. The main design fea­ture of the MDR clamp­ing nut is a spe­cial crown-gear trans­mis­sion with a right-angled deflec­tion of the rota­tion for mul­ti­ply­ing the tight­en­ing torque. This ensures high clamp­ing forces with max­i­mum oper­at­ing safe­ty with the sim­plest man­u­al oper­a­tion. For the thread size M30, for exam­ple, the nor­mal­ly required heavy duty SW46 key is replaced by the SW14 oper­at­ing hexa­gon, thus per­mit­ting a much more com­fort­able work.

The con­nec­tion thread allows a very flex­i­ble appli­ca­tion with dif­fer­ent clamp­ing heights or tool thick­ness­es in com­bi­na­tion with vari­able T‑slot screws or clamp­ing bolts. In addi­tion to the robust mate­r­i­al design, the com­pact dimen­sions and espe­cial­ly the very low over­all heights are to be empha­sized. This also makes it pos­si­ble to use with extreme­ly restrict­ed instal­la­tion con­di­tions. The MDR clamp­ing nut is main­te­nance-free under nor­mal oper­at­ing con­di­tions and can be used in spe­cial ver­sions up to 400 ° C. As an option, the clamp­ing nut can be sup­plied as an MDR‑F vari­ant with an addi­tion­al plate spring for the clamp­ing stroke com­pen­sa­tion. The spring pack­age, inte­grat­ed into an addi­tion­al hous­ing part, ensures that the clamp­ing nut is re-adjust­ed with lit­tle change in the clamp­ing length with­out a sub­stan­tial ten­sion force drop. This addi­tion­al­ly increas­es oper­a­tional safe­ty, for exam­ple when clamp­ing press­ing tools. By means of a clamp­ing stroke indi­ca­tor (hous­ing gap), a visu­al ten­sion force con­trol is made pos­si­ble. For the time being, a size with a nom­i­nal clamp­ing force of 120 kN (12to) and thread sizes from M16 to M30 is available.