Spiral Bevel Gears

Spiral bevel gear:

SSTmachinery make good quality bevel gear set.

All spiral bevel gear made by CNC lathe and control well for dimension.

A spiral bevel gear is a gear with a truncated cone profile and helical or curved teeth.

Bevel gears are typically used where the direction of a drive input has to be turned 90 degrees.

The most common example of the use of bevel gears to achieve this 90 degree displacement is the differential of an automobile.

A spiral bevel gear features helical or curved teeth because this tooth design produces less vibration and noise and can withstand higher rotational speeds than spur or straight cut teeth.

Spiral bevel gears are cut with either right or left handed tooth orientation with their corresponding pinion or driven gear being of opposite orientation.

Due to the interaction of teeth, helical gears work more smoothly and quietly than spur gears. The tooth on the helical gear is cut at an angle with the gear surface. When the two teeth begin to engage, contact is gradual, starting at one end of the teeth and maintaining contact as the gear rotates to full engagement. The typical helix angle range is approximately 15-30 degrees. The thrust load changes directly with the tangent of the helix angle, and the helix is the most commonly used gear in the transmission. They also generate a lot of thrust and use bearings to help support thrust loads. Helical gears can be used to adjust the angle of rotation by 90 degrees. When mounted on a vertical axis. Its normal transmission ratio range is 3:2 to 10:1.

Hypoid gear is a helical gear whose shape is a rotating hyperboloid rather than a cone. Hypoid gears place the pinion on the ring gear or crown wheel. This allows the pinion to have a larger diameter and provides more contact area. The pinion and gear are usually opposite, and the helix angle of the pinion is usually greater than the gear angle. Hypoid gear is used in power transmission system because of its large transmission ratio. Normally, the normal gear ratio range is 10:1 to 200:1.

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