An epicyclic gear teach (also known as planetary gear) includes two gears mounted to ensure that the centre of one equipment revolves around the centre of the various other. A carrier connects the centres of the two gears and rotates to carry one equipment, called the earth gear or planet pinion, around the other, called sunlight gear or sun wheel. The planet and sunlight gears mesh to ensure that their pitch circles roll without slide. A point on the pitch circle of the planet equipment traces an epicycloid curve. In this simplified case, sunlight equipment is fixed and the planetary equipment(s) roll around the sun gear.
An epicyclic gear teach can be assembled therefore the planet gear rolls on the inside of the pitch circle of a set, outer gear ring, or ring equipment, sometimes called an annular equipment. In this instance, the curve traced by a point on the pitch circle of the planet is a hypocycloid.
The mixture of epicycle gear trains with a planet engaging both a sun gear and a ring gear is named a planetary gear train.[1][2] In this case, the ring gear is generally fixed and sunlight gear is driven.
Epicyclic gears obtain name from their earliest application, that was the modelling of the movements of the planets in the heavens. Believing the planets, as everything in the heavens, to end up being perfect, they could just travel in perfect circles, but their motions as viewed from Earth cannot be reconciled with circular movement. At around 500 BC, the Greeks invented the thought of epicycles, of circles traveling on the circular orbits. With this theory Claudius Ptolemy in the Almagest in 148 AD was able to predict planetary orbital paths. The Antikythera Mechanism, circa 80 BC, got gearing which was able to approximate the moon’s elliptical path through the heavens, and even to correct for the nine-season precession of that route.[3] (The Greeks could have seen it much less elliptical, but instead as epicyclic motion.)
EP, a versatile and multi-use remedy, is not merely another simple planetary Planetary Reducer Gearbox gearbox. EP high-tech planetary reducer is certainly a true integrated concept, including more than a few functions combined along to give a complete sub-assembly to the virtually all demanding machines.
EP is the best high-tech servo-reducer, specially focused on designs requiring:
Superior output torsional stiffness
Ultra-large output radial stiffness and Tilting moment
Patented output bearing design
A high-tech planetary equipment train, based on REDEX’s differential know-how
ISO 9409-1 output drive flange for installation pinions, pulleys, couplings, etc.
High input speeds
Superior acceleration and remarkable 
torque density
Minimum backlash (1 – 3 arc-minutes)
In-Line or right angle arrangements
This versatile design helps it be possible for design engineers to find exact solutions to the most demanding applications.
Parallel shaft Gearmotors
Helical Single-Stage
The S Series style may make this gearmotor particularly effective for fan, pump and blower applications. To meet the needs of buyers in these sectors, the S Series is also available in the feet or flange variants and can be completed with a broad range of electric motors entirely produced by EP. Asynchronous motors both IEC and small (B-BE-BX/M-ME-MX), servomotors (BMD) and reluctance motors (BSR) can be in conjunction with the S Series: with the breadth of its portfolio, EP provides buyers with a superb balance of efficiency, cost effectiveness and dynamics.