In the world of gear chain china mechanical power transmission, gear drives employ a special and prominent place. This is actually the the majority of preferred technology if you want to transmit substantial power over a short distance with a continuous velocity ratio. The system of gear drives is very simple – one’s teeth, which are cut on the blanks of the apparatus wheel, mesh with one another to transmit power. To avoid slipping, 
the projections using one disc mesh with the recesses on additional disc in gear drives.
This technology uses different types of gears for power transmission. Actually, it can transmit power not merely between parallel shafts, but also between nonparallel, co-planar, and intersecting etc. shafts.