Beginning with these considerations, we’ve a gearbox with a motor mounting flange that is separable from the casing which incorporate the essential oil seal; in this way we avoid any threat of damaging the essential oil seal in case of substitute of the input flange and the O-Ring could be eliminated.
All the aside covers, swinging and with foot, have O-Rings instead of 
traditional flat gaskets.
The sizes 03-04-05 allow the rotation of the feet without disassembling them; furthermore the variations with swinging aside covers permit the lateral flanges to become installed on both sides with basic fixing screws.
The worm screw includes a ZI involute profile: with this worm-wheel coupling we will get a better performance with a temperature reduction.
The gearboxes and motors are painted with RAL 9022 aluminium colour epoxy powder to safeguard the parts from oxidation and against micro-blowholes that may come through the pressure of die-castings.
The CHPC pre-stage gears (already within the catalogue of CHM) can also be mounted with this range, obtaining a gear ratio up to at least one 1:300. For worm gear unit larger reductions is possible to possess two gears jointly using an appropriate kit
