In the world of mechanical power transmission, gear drives have a very special and prominent place. This is actually the many preferred technology when you need to gear chain china transmit considerable power over a brief distance with a continuous velocity ratio. The mechanism of gear drives is pretty simple – the teeth, which are cut on the blanks of the gear wheel, mesh with one another to transmit power. To avoid slipping, the projections using one disc mesh with the 
recesses on additional disc in equipment drives.
This technology uses different types of gears for power transmission. Actually, it could transmit power not merely between parallel shafts, but also between non-parallel, co-planar, and intersecting etc. shafts.