we have a gearbox with a motor mounting flange that’s separable from the housing which incorporate the essential oil seal; in this way we avoid any threat of damaging the essential oil seal in case of alternative of the insight flange and the O-Ring can be eliminated. All the aside covers, swinging and with foot, have O-Rings instead of traditional flat gaskets. The sizes 03-04-05 permit the rotation of the feet without disassembling them; furthermore the variations with swinging aside covers allow the lateral flanges to end up being fitted on both sides with basic repairing screws. The worm screw includes a ZI involute profile: with this worm-wheel coupling we will get a better performance with a temperature decrease. 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 during the pressure of die-castings. The CHPC pre-stage gears (CH WORM GEARED MOTORS AND WORM GEAR UNITS 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 is possible to have two gears collectively using an appropriate kit