High Quality Hypoid Bevel Gear

Hypoids are a form of spiral bevel gear predominantly used in car and truck axles. The pinion is usually offset below the centre line of the wheel. Hypoids have a smooth sliding action and as such, transmit power silently, efficiently and have good wear life. The application and benefits of bevel gear pinions within hypoid gearboxes are significant, particularly in high-speed automotive applications. A larger pinion diameter increases torque transmission and efficiency, enhancing performance and operational smoothness.

Northern Tool and Gear can produce high-quality hypoid gears, on high-technology “Gleason” CNC machinery in both high and low volume, supported by in-house heat treatment, with a quench press to control quality during heat treatment

Spiral Bevel Gear Comparison

When comparing spiral bevel gears to hypoid gears, the most notable difference lies in the design of the teeth. Hypoid gears feature a more complex tooth design with a curved or helical shape, which allows for even quieter and smoother operation than spiral bevel gears. This advanced design makes hypoid gears the preferred choice for high-performance applications where minimal noise and vibration are crucial.

On the other hand, spiral bevel gears are generally less expensive to manufacture than hypoid gears. They are commonly used in standard passenger vehicles where the cost is a significant consideration, and the performance requirements are not as stringent. While both types of gears are used in vehicle differentials, hypoid gears are often found in high-performance and heavy-duty vehicles due to their superior operational characteristics.

Hypoid Gearboxes

Hypoid gearboxes are a type of spiral bevel gearbox that utilises hypoid gears to transmit motion between non-intersecting shafts. These gearboxes feature a unique gearing arrangement that slides in the longitudinal direction, necessitating the use of special lubricating oils to ensure smooth and efficient operation.

One of the key advantages of hypoid gearboxes is their ability to achieve gear ratios ranging from 3:1 to 10:1 with a single-stage bevel gear stage. For applications requiring even higher gear ratios, hypoid gearboxes can be combined with planetary gearing arrangements, making them highly versatile for various industrial applications.

Hypoid gearboxes are often employed as the output stage in multi-stage gearboxes, where lower speeds and higher torques are required. Their robust design and efficient power transmission capabilities make them ideal for heavy-duty machinery and other demanding applications.

Applications of Hypoid Gears

Hypoid gears are widely used in automotive drive systems, particularly in differential gears, due to their ability to handle high torque and low-speed requirements. They are also prevalent in industrial power transmission and motion control industries, where their robust performance and efficiency are highly valued.

In addition to automotive applications, hypoid gears are suitable for heavy-duty vehicles, industrial machinery, and multi-stage gearboxes. They are commonly used in winches and hoists, where a high gear ratio is essential for effective operation. Furthermore, hypoid gears are ideal for applications requiring a hollow shaft, such as cable-driven systems, due to their unique design and operational characteristics.

Frequently Asked Questions