... ting,housing,motor and so on.Because the core part is slewing ring,so slew drive can ... together.It consists of mounting holes,external gear or internal gear,grease and seal,with this compact ... much higher than heli-cal gear Worm transmission is equivalent to screw drive.multi-teeth meshing transmission ... wormdrives worm wheel,adn the worm wheel cannot drive worm.For example:self-locking worm mechanism ...