What materials are used to make spur gears?

Spur gears can be made from metals such as steel or brass, or from plastics such as nylon or polycarbonate. Gears made of plastic produce less noise, but at the expense of strength and loading capability.

What type of steel is used to make gears?

These are carbon steel, alloy steel, stainless steel, and tool steel. Carbon-steel alloys are used for almost all types of gearing because they are easy to machine, they have good wear resistance, they can be hardened, they are widely available, and they are relatively inexpensive.

What is a spur gear used for?

Spur gears are used in mechanical applications to increase or decrease the speed of a device or multiply torque by transmitting motion and power from one shaft to another through a series of mated gears.

How do you choose gear material?

In our experience, at a simplified level, there are three factors that are most important when selecting a gear material. They are strength, durability, and cost, which includes both the cost of the material and the cost of manufacturing.

What are spur gears used for for kids?

For this reason spur gears are used in low-speed applications and in situations where noise control is not a problem, and helical gears are used in high-speed applications, large power transmission, or where noise abatement is important. The speed is considered high when the pitch line velocity exceeds 25 m/s.

What is the importance of teeth geometry in spur gear design?

Geometric calculations are very important to start the design of spur gear systems. Geometric calculations are made according to the required geometric requirements of the constructional systems. Teeth geometry calculations are a very important part of geometric calculations of spur gear systems.

What is the contact ratio of spur gear?

Contact ratio is the very important numerical value of the spur gear design to identify the boundary geometrical limitations of gear selections. The contact ratio must be around 1.2-1.5 for the selected spur gear pairs. Actually, you do not need to consider this step in gear design.

How to calculate bending stress of spur gear?

To calculate the bending stresses acting on specific spur gear, you need to know the tangential force acting on that tooth. Also, you need to know the parameters below to calculate bending stress with its calculator that is provided by Mechanical Base; Diametral Pitch: Which we defined above.

Why is it important to select the best material for Gears?

Selecting a suitable material for both gears and shafts on which gears are mounted is very important as material will specify the weight and maximum stresses that gear for shaft can take. So for the proper working of the design it is very important to select the best material available for the manufacturing of shafts and gears.