21/28 Teeth Small Module Precision Spiral Bevel Gears Arc Bevel Gear

21/28 Teeth Small Module Precision Spiral Bevel Gears Arc Bevel Gear

A spiral bevel gear is a transmission part commonly used for motion and power transmission between two intersecting shafts. Its tooth shape is distributed on the surface of a cone, and the tooth shape gradually decreases from the large end to the small end. The overall shape is conical and umbrella-shaped, hence the name spiral bevel gear.

The applications of spiral bevel gears:

Spiral bevel gears are widely used in many industries at home and abroad, such as oil field petrochemical machinery, various machine tools, various mechanical processing equipment, engineering machinery, metallurgical equipment, steel rolling machinery, mining machinery, coal mining machinery, textile machinery, ship machinery, aerospace, forklifts, elevators, reducers, aircraft manufacturing, etc. In these fields, spiral bevel gears are used in various mechanical equipment and show their excellent performance.

Transmission principle of spiral bevel gears

Spiral bevel gears transmit power through meshing. During the meshing process, the spiral directions of the two spiral bevel gears are opposite, making them mesh with each other. At the same time, the spiral angle and center distance between them are also matched to ensure the smoothness and accuracy of the transmission.

Advantages of spiral bevel gears:

1. Smooth transmission:
The helical tooth design of spiral bevel gears makes the gear meshing smoother, reduces noise and vibration, and improves the smoothness of transmission.

2. High load-bearing capacity:
Due to the large contact area of ​​the tooth surface, spiral bevel gears can withstand higher loads and are suitable for heavy-duty transmission occasions.

3. Small axial force:
The helical tooth design of spiral bevel gears makes the axial force relatively small, which helps to reduce the burden on the bearings and extend the bearing life.

4. High transmission efficiency:
The meshing efficiency of spiral bevel gears is high and the energy loss is less, so the transmission efficiency is higher than that of spur bevel gears.

5. Allow high-speed operation:
Due to the smoothness and high efficiency of transmission, spiral bevel gears are suitable for high-speed operation occasions.

6. High space utilization:
Spiral bevel gears can achieve a larger transmission ratio in a smaller space, which makes them very useful in transmission systems with limited space.

7. Adjustable transmission ratio:
By changing the helix angle of the gear, the transmission ratio of the spiral bevel gear can be adjusted to meet different design requirements.
8. Wear resistance:
The spiral bevel gear has a high tooth surface hardness and good wear resistance, so it has a long service life.
9. Direction change:
The spiral bevel gear can easily achieve a 90-degree angle transmission between the input shaft and the output shaft, which is suitable for occasions where the direction of movement needs to be changed.

Heat treatment methods for spiral bevel gears:

Carburizing: Carburizing is a commonly used heat treatment method for spiral bevel gears with medium to high loads. This treatment increases the surface hardness by infiltrating carbon elements on the surface of the gear, while the core maintains good toughness. Carburizing is usually followed by quenching and tempering.

Hardening and Tempering: Quenching is the rapid cooling of the gear after heating it to a high temperature to increase hardness and strength. Tempering is performed after quenching to reduce internal stress, improve toughness and wear resistance. This treatment is suitable for spiral bevel gears that require high hardness and wear resistance.

Nitriding: Nitriding is a chemical heat treatment method that increases surface hardness and wear resistance by infiltrating nitrogen elements on the surface of the gear. Nitrided gears have good corrosion resistance and fatigue resistance, and small deformation, and are suitable for precision gears.

Carbonitriding: Carbonitriding is a combination of carburizing and nitriding, which can be performed at a lower temperature to obtain surface hardness and a certain depth. This treatment is suitable for spiral bevel gears with medium load and wear resistance requirements.

Induction Hardening:Induction hardening is a local heat treatment method that uses induction heating to quickly heat a specific area of ​​the gear and then quickly cools it. This method can accurately control hardening and deformation and is suitable for local hardening or repair.

Quenching and Tempering: Quenching and Tempering is a heat treatment method that improves the comprehensive mechanical properties of gears and is suitable for spiral bevel gears that require good strength and toughness.

Spiral Bevel Gears:

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1. 30 years experience in manufacturing industrial gears.