The planetary gear units with output flange in the AG3400 economy series are a cost-efficient alternative to the high-end AG2400 gears. The gears, which are available in 1-stage and 2-stage versions, are compatible in their mating dimensions with those of the high-end AG2400 series and enable the user to implement applications with lower demands on dynamics, torque and accuracy in a very cost-effective manner. The AG3400 series is available in standard and high-torque versions for rotary servomotors. The gear ratios are finely scalable and range from 3 to 100.