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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 risk of damaging the oil seal in case of alternative of the input flange and the O-Ring could be eliminated. All the aside covers, swinging and with ft, have O-Rings instead of traditional smooth gaskets. The sizes 03-04-05 allow the rotation of the feet without disassembling them; furthermore the versions with swinging apart covers allow the lateral flanges to be fitted on both sides with basic fixing screws. The worm screw includes a ZI involute profile: with this worm-wheel coupling we shall get a better overall 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 can come through the pressure of die-castings. The CHPC pre-stage gears (already present in the CH WORM GEARED MOTORS AND WORM GEAR UNITS catalogue of CHM) can 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 jointly using an appropriate kit