Beginning with these considerations, we have a gearbox with a motor mounting flange that’s separable from 
the casing which incorporate the essential oil seal; in this way we avoid any threat of damaging the oil seal in the event of substitute of the insight flange and the O-Ring could be eliminated.
All the apart covers, swinging and with foot, have O-Rings instead of traditional flat gaskets.
The sizes 03-04-05 permit the rotation of your feet without disassembling them; furthermore the variations with swinging aside covers allow the lateral flanges to become installed on both sides with simple fixing screws.
The worm screw includes a ZI involute worm gear unit profile: with this worm-wheel coupling we shall get a much 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 can come during the pressure of die-castings.
The CHPC pre-stage gears (already present in the catalogue of CHM) may also be mounted with this range, finding a gear ratio up to at least one 1:300. For bigger reductions can be done to possess two gears together using a proper kit