All knowledge of controller pin gear reducer principle and structure, maintenance etc.

It works like two silver coins, one at rest and the other spinning to its edge.When a spinning coin goes from one point back to its original point, it has been turned twice, not one.
2. The schematic diagram is not easy to draw.let me explain.It consists of gears on the inside, the combination of dynamic and static gears is not like the silver coin on the outside.Instead, one outer edge and another inner edge mesh to form a group that saves space.Even if multiple groups are combined, they can be stacked in the cylinder.The input and output shafts of the cylinder are on the same center, but the inner gear is not.The driving wheel is smaller than the driven wheel, and rotates along the axis and rolls at the same time.The driven wheel rolls; the driven wheel drives the next driven wheel to swing along the shaft...to the output shaft.The number of teeth and gears in each set determines the gear ratio.
3. Just make sure the engine oil is working properly.
The sealing ring is prone to oil leakage.Just replace the sealing ring.When replacing, just remove the motor screws, not the reducer screws.Once removed, remove the motor's fan blade cover.Turn the blade and pull out the motor at the same time.When installing the motor after replacement, the fan blades should also spin.The oil pump is also prone to problems.The transparent oil tube is easy to leak oil.
When removing the reducer, be sure to remember the direction markings for each gear so you can reinstall it.
5. Suitable for any machine installed vertically.Such as mixing paddles and mud rakes.