we’ve a gearbox with a motor mounting flange that is 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 substitute of the input flange and the O-Ring can be eliminated. All the aside covers, swinging and with ft, have O-Rings CH WORM GEARED MOTORS AND WORM GEAR UNITS rather than traditional flat gaskets. The sizes 03-04-05 permit the rotation of your toes without disassembling them; furthermore the versions with swinging apart covers permit the lateral flanges to be installed on both sides with simple repairing screws. The worm screw has a ZI involute profile: with this worm-wheel coupling we will get a better efficiency 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 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 larger reductions is possible to have two gears jointly using an appropriate kit