42%<\/a>, China leads the other two countries, Japan and South Korea, with shares of 16% and 6%, respectively. Similarly, gear manufacturers in the USA also have a great share of the market.<\/p>\r\nThe following are the most common types of bevel gears:<\/b><\/p>\r\n\r\nStraight Bevel Gear<\/b><\/h3>\r\n
Straight bevel gear, with a 43% market share, is the largest product category of bevel gear. A straight bevel gear is a type of bevel gear where the teeth are cut straight and taper off towards the apex of the gear. Since the force acting in the axial direction is small, it is often used in places where thrust loads are averse.<\/p>\r\n
It also has the advantage of simplifying the bearing. The disadvantage is that when rotating at high speeds, the noise and vibration increase. Because of these features, straight bevel gears are recommended when cost is a priority, high-speed rotation is not required, and noise is not a problem.<\/p>\r\n
Generally used when operating at a relatively low speed (circumferential speed of 2m\/s or less). It is relatively easy to manufacture and is especially suitable for machine tools, printing machines, etc., as well as differential devices\u2014the most popular bevel gear for power transmission.<\/p>\r\n\r\n
Spiral Bevel Gear<\/b><\/h3>\r\n
Spiral bevel gear is another type of bevel gear. The tooth traces are spiral and helical, creating a helical angle, and the two intersecting gears intertwine with each other, creating a stronger mesh. The advantages include low noise and vibration even during high-speed rotation, high tooth surface strength, and less stress on the tooth surface.<\/p>\r\n
In addition, it has a curved tooth trace (typically an arc) on the pitch cone, allowing for smoother operation than straight bevel gears. This is mainly used for high-speed operation with a pitch circumferential speed of 10 m\/s or more.<\/p>\r\n\r\n
Zerol Bevel Gear (Spiral Bevel Gear)<\/b><\/h3>\r\n
A spiral bevel gear with a helix angle of 0 degrees is also called a zero bevel gear. It is a bevel gear that has the characteristics of straight bevel gears and spiral bevel gears with the same force applied to the teeth.<\/p>\r\n
Compared to spiral bevel gears, the major advantage is that the thrust load can be suppressed. It is used in industrial equipment and automobiles. The tooth traces are curved and have a very beautiful appearance. But unlike the tooth profile of a spiral bevel gear, it does not have a tooth profile in which the teeth are twisted together in a conical shape on the outer periphery.<\/p>\r\n\r\n
Hypoid Gear<\/b><\/h3>\r\n
A hypoid gear has spiral tooth traces and staggered shafts that are neither parallel nor intersecting on the input or output sides of the gear. Although similar to spiral bevel gears, they differ in that their axes intersect.<\/p>\r\n
Both are similar in that they utilize a large reduction ratio and are used with large torque. These gears are mainly used in automobile drive systems, train drive systems, speed reducers (buses, trucks, luxury private cars), etc.<\/p>\r\n
The advantages of hypoid gears include a large reduction ratio, low noise and vibration, and strength that can withstand large torque. Regarding the reduction ratio, hypoid gears can increase the number of teeth on the input side (hypoid pinion) and the output side (hypoid gear).<\/p>\r\n\r\n
Miter Gear<\/b><\/h3>\r\n
Gears with the same number of teeth are called miter gears. The standard shaft angle is 90 degrees, and the pitch plane is 45 degrees. There are also 45-degree, 60-degree, and 120-degree miter gears, and miter has the meaning of miter or joint. These are the power transmitting, driving, and transporting parts of equipment.<\/p>\r\n
Power can be transmitted through orthogonal axes. It is often used in applications where there is no need to change gears, just by changing the direction of rotation of a shaft.<\/p>\r\n
Miter gear is mainly suitable for use in the semiconductor industry, the food industry, general industrial machinery, and agricultural machinery.<\/p>\r\n\r\n