The following are the advantages and disadvantages of the gear drive as compared to belt, rope and chain drives:

Advantages:

1.                 It transmits exact velocity ratio.

2.                 It may be used to transmit large power.

3.                 It has high efficiency.

4.                 It has reliable service.

5.                 It has compact layout.

Disadvantages:

1.     The manufacture of gears requires special tools and equipment.

2.     The error in cutting teeth may cause vibrations and noise during operation.