Spiral bevel gears are usually made from hardened steel. The teeth of these gears are often ground for a far more precise 
finish enabling little noise at high speeds. You can specify left hands or right hand depending on the direction you need to run the gears
If you have a higher speed application that requires a whole lot of torque after that spiral bevel gears are a great option. The gears operate at 90° to one another and also have “spiral” shaped tooth which gives maximum tooth surface contact while rotating. With contact spread over the complete tooth the spiral bevel gear could be run much quicker compared to the straight tooth bevel gear and handle harder begins 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 usual. The setup is designed to ensure that the worm can change the gear, however the gear cannot switch the worm. The position of the worm can be shallow and as a result the gear is held in place because of the friction between the two. The gear is found in applications such as conveyor systems where the locking feature can become a brake or an emergency stop.
The model cross-section shows an average placement and use of a worm gear. Worm gears have an inherent security mechanism built-in to its style since they cannot function in the reverse direction.
