In the early 2000's AMS introduced the E-Gear as a totally enclosed version of the Flat Plate series.  This was the first enclosed gearbox specifically designed for the Boat Lift industry.  Unlike other systems, both stages of reduction are done through gears and are separated by internal seals to keep both lubricated.  About two decades later, AMS continues to manufacture the E-Gear with minor improvements being made since its inception.  Like the Flat Plate, the drive is made to slide over a 2" pipe (2.375" OD).  With no pulleys or belts, the C-Face motor attaches to the mounting flange of the gearbox with four stainless steel bolts that thread into the threaded holes in the motor end bell.  The overall ratio of the 480:1 E-Gear is the same as a Flat Plate (using a 10" drive pulley).