Most manufactured hypoid gears carburized steel and undergo case hardening a surface hardness of 60 Rockwell C (HRC) and core hardness of 36 HRC. Because the pinion higher revolutions, it is advisable to bring the pinion with a higher hardness than the ring gear; eg, pinion 62 HRC, gear 59 HRC. This will also reduce the affinity between the pinion gear and side surfaces and thus reduce the risk of scoring. An example of the appearance of surface hypoid ring gear score documented in Figure 9. surface durability, hypoid gears at high surface finish requirements and lubrication due to the sliding velocities. Advantage is the fact that the velocities is zero slides at the park online, maintain lubrication film separating surface. However, the slides in root and top areas depending on the high offset that could lead to scoring (Fig. 8) that can destroy the tooth surfaces and even lead to tooth fracture side. The high-pressure oil right hypoid mandatory for hypoid gears. It is these benefits of hypoid gear sets:

1. Welcome design freedom, such as lowering the center of gravity vehicles

2. Good hydrodynamic conditions in connection with hypoid oil right

3. Improved efficiency with small offsets, compared with spiral bevel gears

4. Increase diameter provides lower pinion root bending stress

5. Increase per-contact ratio due pin– spiral angle ion

6. dampening effect due to high sliding speed (noise reduction)

Hypoid gears are axial forces can be calculated through the vector normal force applied by the position of point average each member (see “General Explanation Theoretical Analysis Bevel Gear”). The force vector is normal to the transmission side separated into its X, Y and Z components, from which the components applied in calculating directions. The relationship in Figure 8 leads to the following formulas, which can be used to force components are calculated in a Cartesian coordinate system and assign them to the load is calculated in CAD systems.