China wholesaler Construction Machinery Herringbone Gear Supplier spiral bevel gear

Product Description

 

Product Description

 

A double helical gear is a type of gear that consists of 2 parallel helical gears with opposite helix angles, which are connected by a central web. The helix angle refers to the angle between the gear’s teeth and its axis of rotation.

Double helical gears are also known as herringbone gears, due to their resemblance to the bones of a herring fish. They are designed to provide smooth and quiet operation, as the opposing helices of the gears cancel out the axial forces and minimize the axial thrust that is created by a single helix gear.
 

 

Machinery processing

 

Applications

Industrial Machinery: Double helical gears are often used in heavy-duty industrial machinery such as turbines, compressors, and generators, where high loads and torque transmission are required.

Automotive Industry: Double helical gears are used in automotive transmissions, where they provide smooth and quiet operation and high torque transmission.

Marine Industry: Double helical gears are used in marine propulsion systems, where they provide high load capacity and efficiency.

Robotics: Double helical gears are used in precision robotics, where accuracy and smooth operation are critical.

Machine Tools: Double helical gears are used in precision machine tools such as milling machines, where high accuracy and stability are required.

Aerospace Industry: Double helical gears are used in aerospace applications such as helicopter transmissions, where high load capacity and smooth operation are critical.
 

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Application: Machinery
Gear Position: External Gear
Manufacturing Method: Cast Gear
Toothed Portion Shape: Double Helical Gear
Material: 42CrMo
Transport Package: Wooden Case
Customization:
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herringbone gear

What is the purpose of using herringbone gears in machinery?

Using herringbone gears in machinery serves various purposes and offers several advantages. Here’s a detailed explanation of the purposes and benefits of using herringbone gears:

  • Smooth and Quiet Operation: Herringbone gears are known for their ability to provide smooth and quiet operation. The double helical tooth design cancels out axial and radial forces, minimizing gear vibrations and reducing noise levels during engagement. This makes herringbone gears suitable for applications where noise reduction and smooth operation are essential, such as precision machinery, automotive transmissions, and gearboxes in industrial equipment.
  • High Load Capacity: Herringbone gears have a high load-carrying capacity due to their double helical tooth profile. The opposing helix angles of the gear teeth distribute the load evenly, allowing for efficient power transmission even under heavy loads. This makes herringbone gears suitable for applications that involve high torque requirements and heavy-duty machinery, such as mining equipment, construction machinery, and marine propulsion systems.
  • Bidirectional Power Transmission: Herringbone gears can transmit power in both directions without the need for additional thrust bearings or special mechanisms. The double helical tooth profile cancels out axial thrust forces, eliminating the net axial thrust on the gear shaft. This bidirectional power transmission capability makes herringbone gears suitable for applications where reversible power transfer is required, such as marine propulsion systems, locomotives, and machine tools.
  • High-Speed Applications: Herringbone gears are well-suited for high-speed applications due to their enhanced tooth strength and efficient torque transfer. The double helical tooth design provides increased tooth contact area and improved load distribution, allowing for reliable power transmission at high rotational speeds. This makes herringbone gears suitable for applications such as turbo machinery, power generation equipment, and high-speed gearboxes.
  • Reduced Wear and Improved Durability: The double helical tooth profile of herringbone gears helps to minimize wear and improve gear durability. The opposing helix angles distribute the load evenly across the gear teeth, reducing localized stress concentrations and minimizing the risk of tooth failure. This ensures long service life and reliable operation, making herringbone gears suitable for applications where durability and longevity are critical, such as heavy machinery, industrial equipment, and wind turbine systems.
  • Efficient Power Transmission: Herringbone gears offer efficient power transmission due to their large contact area and overlapping tooth engagement. The double helical tooth profile provides a larger contact ratio compared to spur gears, allowing for a greater number of teeth in contact at any given time. This efficient torque transfer minimizes power losses and improves overall gear system efficiency, making herringbone gears suitable for applications where energy efficiency is a priority, such as automotive transmissions, gearboxes, and power transmission systems.

The purpose of using herringbone gears in machinery is to achieve smooth and quiet operation, handle high loads, enable bidirectional power transmission, accommodate high-speed applications, ensure durability and longevity, and achieve efficient power transmission. These advantages make herringbone gears a preferred choice in various industries and applications where reliable and high-performance gearing solutions are required.

herringbone gear

How does a herringbone gear impact the overall efficiency of a system?

Herringbone gears can have a significant impact on the overall efficiency of a mechanical system. Their unique design and characteristics contribute to improved efficiency in several ways. Here’s a detailed explanation of how herringbone gears can influence the efficiency of a system:

  • Reduced Friction: Herringbone gears are designed to minimize friction between the gear teeth during operation. The double helical arrangement of the teeth allows for opposing helix angles, which helps to cancel out the axial thrust generated by the gear meshing. This results in reduced sliding friction and less energy loss due to frictional forces, thereby improving overall efficiency.
  • Smooth Operation: The herringbone gear design enables smooth and precise gear engagement. The opposing helix angles of the teeth facilitate the gradual meshing and unmeshing of the gears, reducing impact and shock loads. The smooth operation minimizes vibrations and noise levels, eliminating energy losses associated with excessive vibrations and improving the overall efficiency of the system.
  • Higher Torque Capacity: Herringbone gears have a larger surface area of contact between the gear teeth compared to conventional spur gears. This increased contact area allows for higher torque transmission capabilities. By efficiently transmitting higher torque loads, herringbone gears help reduce the need for additional gear stages or larger gear sizes, resulting in a more compact and efficient system.
  • Better Load Distribution: The double helical arrangement of the teeth in herringbone gears helps distribute the load more evenly across the gear face. This improved load distribution minimizes localized stress concentrations and wear on the gear teeth, leading to enhanced durability and reduced energy losses due to gear wear and failure.
  • Efficient Power Transmission: Herringbone gears facilitate efficient power transmission by ensuring a high degree of gear meshing contact and proper alignment. The precise gear engagement reduces backlash and ensures optimal power transfer between the gears, resulting in higher transmission efficiency and minimal power losses within the system.
  • Reduced Heat Generation: Herringbone gears’ smooth operation and reduced friction contribute to lower heat generation during gear meshing. The reduced heat generation helps to minimize thermal losses within the system. Additionally, the improved load distribution and larger contact area of herringbone gears help dissipate heat more effectively, further enhancing the overall efficiency of the system.

It’s important to note that the overall efficiency of a system is influenced by various factors, including gear design, lubrication, alignment, and the specific application and operating conditions. While herringbone gears offer several advantages that contribute to improved efficiency, it’s crucial to consider the entire system design and optimize other components and parameters accordingly to achieve the highest overall efficiency.

herringbone gear

Can you explain the unique shape of herringbone gear teeth?

The unique shape of herringbone gear teeth is a defining characteristic of herringbone gears, also known as double helical gears. Here’s a detailed explanation of the unique shape of herringbone gear teeth:

Herringbone gears have a V-shaped or herringbone-shaped tooth profile, which is formed by two helical gear sections that are mirror images of each other. This tooth profile is distinct from the straight or helical tooth profiles found in other types of gears such as spur gears or helical gears.

When viewed from the end, the teeth of a herringbone gear resemble the letter “V”. This shape is created by the combination of two opposing helix angles, one on each side of the gear. The helix angle refers to the angle at which the teeth are inclined relative to the gear’s axis.

In a herringbone gear, the helix angle of one helical section is opposite in direction to the helix angle of the other helical section. This means that as the gear rotates, the teeth on one side lean in one direction, while the teeth on the other side lean in the opposite direction.

The opposing helix angles of the two gear sections in herringbone gears serve several important purposes:

  • Axial Thrust Elimination: One of the main advantages of the herringbone gear design is the elimination of axial thrust or end thrust forces. In helical gears, the helix angle of the teeth generates an axial force along the gear’s axis during rotation. However, in herringbone gears, the opposing helix angles cancel out these axial forces, resulting in a balanced gear that does not experience significant axial movement or require thrust bearings.
  • Smooth Engagement: The opposing helix angles of herringbone gears facilitate smooth and gradual tooth engagement. As the gear rotates, the teeth on one side gradually come into contact with the teeth on the other side. This gradual meshing reduces sliding friction, minimizes backlash, and ensures a continuous and smooth transfer of power between the gear sections.
  • Increased Load Capacity: The V-shaped tooth profile of herringbone gears provides increased tooth contact area compared to gears with straight or helical teeth. This increased contact area improves load distribution and allows herringbone gears to handle higher torque loads, resulting in an increased load-carrying capacity.

The unique shape of herringbone gear teeth requires precise manufacturing techniques to ensure proper meshing and alignment of the gear sections. The teeth must be accurately machined to achieve the correct helix angles and tooth profiles, ensuring smooth operation and efficient power transmission.

In summary, the unique shape of herringbone gear teeth, with their V-shaped or herringbone-shaped profile formed by opposing helix angles, enables axial thrust elimination, smooth engagement, and increased load capacity. These characteristics make herringbone gears well-suited for applications where efficient torque transmission, balanced operation, and high load-carrying capacity are essential.

China wholesaler Construction Machinery Herringbone Gear Supplier spiral bevel gearChina wholesaler Construction Machinery Herringbone Gear Supplier spiral bevel gear
editor by CX 2024-04-11