Universal motors and three-phase current geared motors for industrial use with low-viscosity, lightly viscous, neutral, aggressive and non-flammable media. Strong also when handling acids and alkalis. Explosion-proof motors for pumping many low-viscosity, highly inflammable, flammable media. Especially where the use of electricity is problematic. The compact MDxL air motors automatically adapt to the load. Ideal for handling thin, aggressive, slightly viscous and highly inflammable liquids.