Spiral bevel gears are typically created from hardened steel. The teeth of these gears are often ground for a more precise finish enabling little sound at high speeds. You can specify left hand or right hand depending on the direction you need to run the gears
If you have a high speed application that will require a whole lot of torque then spiral bevel gears certainly are a great option. The gears operate at 90° to each other and also have “spiral” shaped the teeth which provides maximum tooth surface contact while rotating. With contact spread over the complete tooth the spiral bevel equipment 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 gear reductions. Gear ratio ranges of 5:1 to 300:1 are regular. The setup was created to ensure that the worm can change the gear, however the gear cannot turn the worm. The angle of the worm is certainly shallow and consequently the gear is held set up because of the friction between your two. The gear is situated in applications such as for example conveyor systems in which the locking feature can become a brake or a crisis stop.
The model cross-section shows an average placement and utilization of a worm gear. Worm gears have an inherent protection mechanism built-in to its style given that they cannot function in the reverse direction.