Housing: Aluminium, sealed against lubricant leaks and protected against dust, can be mounted in any position. Teeth: Worm gear made from plastic, worm made from steel, ground. Not self-locking. Bearing: Motor and gearbox with roller bearing. Lubrication: Maintenance free grease lubrication. Motor: DC motor 24 V. Worm pinned on motor shaft. Free lead ends. Sense of rotation can be changed by swapping leads over. Protection class according to VDE 0530: IP 41 Insulation class according to VDE 0530: F Operating mode as per VDE 0530: S1