pto gearbox speed increaser
Gearboxes
The gearbox is the major mechanical ingredient of the kinematic chain of agricultural equipment. It is usually pushed by the tractor electrical power take-off via the PTO shaft and the gearbox drives. The operating torque can also be transmitted to the gearbox by hydraulic motors or belt pulleys, in addition to chain gears.
Gearboxes always have 1 input shaft and at the very least 1 output shaft. If these shafts are positioned at 90° to every single other, the gearbox is an 
ORTHOGONAL ANGLE gearbox or 
much more typically named a proper-angle gearbox.
If the input and output shafts are put parallel to every single other, the gearbox is acknowledged as PARALLEL SHAFT gearbox.
Dependent on the gears and the number of teeth, the EPG Group variety of gearboxes involves: