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Bajrang Engineering Works
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Bajrang Engineering Works

Bevel Gears

Materials Selecting Bevel Gear Limitation
Bevel Gear Accuracy Manufacturing Types
Application    

Bevel GearsBevel gears are very popular type of gears used in various industrial purposes. This particular type of industrial gears are intended for the purpose of operating on intersecting axes, generally at right angles, effective for working round the corners. Though bevel gears are more often than not used at right angles, but effective design can make them to work at other angles also. As two bevel gears meshes, the respective vertices of their cones lie on a single point, which by the way is also an intersection point of the shaft axes.

Bevel gears may come with spiral teeth. These are by shape are conical. The speciality of these gears lies in the fact that minor adjustments are easily allowed during the assembly stage and there is also provision for displacement from deflection due to operating loads without in any way concentrating the load at the end of the tooth.

Types of Bevel Gears
There are different types of bevel gears that are generally available depending on the nature of tooth design. They are the following:

Straight Bevel Spiral Bevel Zero Bevel
Straight Bevel Gears Spiral Bevel Gears Zerol Bevel Gears

Miter Bevel Crown Gears
Miter Gears Crown Gears


Material of Bevel Gears
Bevel gears are typically made out of metal and now plastic. In metal, materials used are brass, aluminum, bronze, cast iron, steel that includes hardened and stainless steel. In Plastics, typical materials to make bevel gears include Polycarbonates, nylon, Delrin, acetal.

Selecting the Best Bevel Gear
Some of the important factors to be noted in the selection process of a bevel gear are given here. It must be remembered that all the points need not apply in tandem but depending on the application, they must be looked out for:
Why use Bevel Gear Box?
A Bevel gearbox has advantages over say, a worm gear because of efficiency, which is considerably higher. Another vital advantage is that bevel gears offer the flexibility of 90 degree solution at ratio that is lower.

Other advantages include:
» Good performance under high speeds and loads.
» Works particularly well for right-angle drives.
Basic Limitation of a Bevel Gear Accuracy of the Bevel Gears
According to the international standards there is generally four types of error. They are the following:
Manufacturing Bevel Gears
There are different ways available now for the manufacturing of Bevel gears. But unlike the spur gears, Bevel gears can be made to have cones that are shaped differently, depending on the type of manufacturing process.

Highlights of the Manufacturing Process

Bevel Manufacturing Process


Application of Bevel Gears






Effectively sums up all that is happening in the world of gears.

·Gear Blank
·Gear Cutting
·Gear Hobbing
·Heat Treatment of Gears