Sc Industrial is a top manufacturers and dealers of Planetary Gearbox in India, A planetary gearbox is used to transfer the largest torque in the most compact form (known as torque density). The bicycle's acceleration hub is a great example of a planet-wheel mechanism. Planetary gear transmission (PGT) is widely used in the automobiles, helicopters and marine applications. PGT is more advanced than counter-shaft drive because of its higher torque-to-weight ratio, compactness and reduced noise. Almost unlimited transmission ratio options due to combination of several planet stages. Suitable as planetary switching gear due to fixing this or that part of the gearbox.