2.3 What is the difference between the CMRV and EV helical worm gear series?

The CMRV helical worm gear series is the so-called “new series”. Its special feature is that this type is stocked on a large scale. The helical worm gear series is the so-called “old-series”, but it is still available in large quantities. Special hollow shaft sizes are also available. For these, the delivery time is however approx. 28 working days. Overall, there are no differences in the quality of the two, but the CMRV version is slightly cheaper.