Spiral bevel gears are typically created from hardened steel. One’s teeth of these gears are usually ground for a more precise finish allowing for little noise at high speeds. You can specify left hand or right hand depending on the direction you should run the gears
If you have a high speed application that requires a lot of torque then spiral bevel gears certainly are a great choice. The gears run at 90° to each other and have “spiral” shaped teeth which provides maximum tooth surface contact while rotating. With get in touch with spread over the complete tooth the spiral bevel gear could be run much quicker compared to the straight tooth bevel gear and handle harder starts and stops.
We make spiral bevel gears limited to industrial applications.
Worm gears are used in large equipment reductions. Gear ratio ranges of 5:1 to 300:1 are usual. The setup is designed to ensure that the worm can change the gear, however the gear cannot change the worm. The angle of the worm is shallow and consequently the apparatus is held set up due to the friction between the two. The gear is situated in applications such as conveyor systems in which the locking feature can act as a brake or an emergency stop.
The model cross-section shows a typical placement and utilization of a worm gear. Worm gears have 
got an inherent basic safety mechanism built-in to its design since they cannot function in the reverse direction.