we have a gearbox with a motor mounting flange that is separable from the housing which incorporate the oil seal; in this way we avoid any risk of damaging the oil seal in case of replacement of the insight flange and the O-Ring can be eliminated. All the aside covers, swinging and with feet, have O-Rings instead of traditional smooth gaskets. The sizes 03-04-05 allow the rotation of your feet without disassembling them; furthermore the versions with swinging apart covers permit the lateral flanges to be fitted on both sides with basic fixing screws. The worm screw has a ZI involute profile: with this worm-wheel coupling we will get a better functionality with a temperature reduction. The gearboxes and motors are painted with RAL 9022 aluminium colour epoxy powder to protect the parts from oxidation and CH WORM GEARED MOTORS AND WORM GEAR UNITS against micro-blowholes that may come during the pressure of die-castings. The CHPC pre-stage gears (already within the catalogue of CHM) may also be mounted with this range, obtaining a gear ratio up to 1 1:300. For bigger reductions can be done to have two gears with each other using an appropriate kit