This paper discusses the characteristics and applicable occasions of bevel gear and worm gear transmission from three aspects: transmission efficiency, friction and self-locking.

Transmission efficiency: bevel gear >; Worm gear and worm, there are also special cases.

Friction: bevel gear >; Worm gear and worm, there are also special cases.

Self-locking, only some worm gears and worms have it.

Applicable occasions

Multi-purpose worm wheel with large transmission ratio

Multi-purpose worm wheel with self-locking requirement

For the case of biaxial * * * surfaces, only bevel gears can be selected.

Other options should be selected according to the specific application.