20 tooth single-groove gears

Bevel Gear is widely used, its own unconnected device, can change the size and direction of force, gear and gear bite to reduce friction so that the loss of force conversion energy is smaller, reduce the loss of mechanical energy, such as Three Gorges hydroelectric power generation, is to transmit the potential energy of water through the gear into electrical energy.
More widely used in life, turbines, engines, conveyor belts, etc.

In addition, we have other accessories such as Circular machine oiler, Control Panel, Adjustable Yarn Bobbin Cover, Synchronous Belt, Needle Cylinder and so on.

Gear diameter calculation method: 
Tooth top circle diameter = (number of teeth + 2) * modulus
Indexing circle diameter = number of teeth * modulus 
Root diameter = Tooth top diameter - (4.5× modulus) 
For example: M4 32 teeth 34*3.5 
Tooth top circle diameter = (32+2)*4=136mm 
Indexing circle diameter = 32*4=128mm 
Root diameter = 136-4.5*4=118mm 
7M 12 teeth Center distance D = (index circle diameter 1 + index circle diameter 2)/2 
It is 
（12+2）*7=98mm 
This calculation method is for all analog-to-digital gears (excluding gears that are shifted). 
The modulus indicates the size of the gear tooth. 
Gear modulus = indexing circle diameter ÷ number of teeth 
= Gear outer diameter÷ (number of teeth -2)