GEAR PARTS
Gear types
Depending on what we want to do in our mechanism, we will have to select one type of gear or another, since each one is designed for a very specific function.
Spur gears. straight Cylindrical Gear
The most common type of gear, used when force or speed needs to be reduced or increased in circumstances where speed is not very high.
Helical Cylindrical Gear
A slightly more refined version of the previous one. Quieter and capable of operating at higher speeds. They are also double-toothed. Also available with double helical teeth, in opposite directions, which support even higher speeds and outputs.
Bevel Gear with Straight Teeth
They are used to change the direction of rotation in a mechanism, usually perpendicularly, when high speeds are not required.
Bevel Gear with Spiral Teeth
Like the previous ones, they are used to change the direction of rotation but in this case the supported speed is higher.
Internal Gear
They work the same as traditional external gears but are more compact than an external gear with the same features.
Planetary Gears
This type of gear uses a central gear around which smaller ones rotate, hence the name, as they remind us of the solar system with the sun in the centre and the planets orbiting it.
Worm gear
These gears are widely used as they generate a very constant output speed and work without vibration or noise. In addition, these mechanisms are usually quite compact.
Gear rack and pinion
These gears allow us to convert a rotary movement into a linear movement and vice versa, so they are extremely useful.
