Spiral bevel gears are usually made from hardened steel. The teeth of these gears are often ground for a more precise finish enabling 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 will require a whole lot of torque after that spiral bevel gears are a great option. The gears operate at 90° to each other and also have “spiral” shaped tooth which provides maximum tooth spiral gear china surface contact while rotating. With get in touch with spread over the whole tooth the spiral bevel equipment can be run much faster compared to the straight tooth bevel equipment and handle harder starts and stops.
We make spiral bevel gears only for industrial applications.
Worm gears are used in large equipment reductions. Gear ratio ranges of 5:1 to 300:1 are typical. The setup was created so that the worm can turn the gear, however the equipment 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 found in applications such as conveyor systems in which the locking feature can become a brake or a crisis stop.
The model cross-section shows a typical placement and utilization of a worm gear. 
Worm gears possess an inherent protection mechanism built-in to its design since they cannot function in the reverse direction.