Use of torsionally rigid metal bellows couplings in Special high-speed test benchs

Spe­cial high-speed test bench­es are used to test bear­ings. In these tests, the effects of dif­fer­ent lubri­cants on the slid­ing prop­er­ties of the bear­ings in the endurance test are checked. The struc­tur­al design of such a test rig must meet dif­fer­ent require­ments. The dri­ve is sub­ject to spe­cial con­di­tions. In addi­tion to a lat­er­al force-free stor­age, the cou­pling is a not to be under­es­ti­mat­ed com­po­nent. Essen­tial fea­tures in this case are the absolute tor­sion­al rigid­i­ty, the good damp­ing prop­er­ties and, of course, the pre­cise and almost pow­er­less com­pen­sa­tion of all off­set errors between the shaft ends.

For such appli­ca­tions, tor­sion­al­ly rigid flex­i­ble cou­plings are gen­er­al­ly ide­al. The thin met­al bel­lows have in addi­tion to the bal­anc­ing, also vibra­tion-damp­ing prop­er­ties. The high flex­i­bil­i­ty of Jakob’s KSS cou­plings with its 2‑wave bel­lows and straight adapter and the easy mount­ing option of the cou­pling through the use of cone bush­ings as a shaft-hub con­nec­tion guar­an­tee a safe trans­mis­sion of all forces and torques, even with small shaft diam­e­ters and torques with­out addi­tion­al feath­er key. The rota­tion­al­ly sym­met­ric design ensures excel­lent, dynam­ic oper­at­ing behav­ior, even at very high speeds. The high tor­sion­al rigid­i­ty and the very low restor­ing forces with shaft mis­align­ment as well as the low moment of iner­tia char­ac­ter­ize the cou­pling type. Torques from 25 to 2500 Nm are pos­si­ble. High­est qual­i­ty in pro­cess­ing and the mate­ri­als used make the KSS cou­plings a reli­able and eco­nom­i­cal com­po­nent. It is used, in addi­tion to the test stands as a high­light­ed exam­ple, also par­tic­u­lar­ly often in ser­vos and actuators.