China manufacturer Metric Hobbing Carbon Alloy Steel Precision Gearbox Reducer Herringbone CNC Machining Auto Spare Parts Metal Transmission Drive OEM Grinded Miter Helical Gear gear box

Product Description

Metric Hobbing Carbon Alloy Steel Precision Gearbox Reducer Herringbone CNC Machining Auto Spare Parts Metal Transmission Drive OEM Grinded Miter Helical Gear

Features

1. High precision gear for smooth, quiet operation.
2. Flexible for custom-made requests.
3. Stable transmission, low impact, vibration and noise.
4. Heavy Load capability, more compact, but less complex.

Product Description

 

Products   Spur Gear, Helical Gear, Herringbone Gear, Spiral Bevel Gear, Straight Bevel Gear, Worm Gear, Shaft, Pinion
Module   M0.3-M10
Precision grade   DIN6, DIN7, DIN8, DIN10
Pressure angle   14.5 degree, 15 degree, 20 degree
Material   Medium Carbon Steel: 35#, 45#
Carburizing Steel: 20CrMnTi, 20CrMnMo, 20CrMo
Alloy Steel: 40Cr, 35CrMo, 42CrMo, 40CrNiMo
Cast Iron: HT250, QT400
Copper, Stainless Steel, Brass, Nylon, POM, and so on
Heat treatment   Hardening & Tempering, Surface Quenching,
Integral Quenching, Carburizing Quenching, Tempering,
Normalizing, Nitriding
Surface treatment   Blacking, Polishing, Anodization, Chrome Plating, Zinc Plating, Nickel Plating
Application   Gearbox and reducer;
Precision cutting machines, Lathes machines;
Milling machines;
Grinder machine;
Automated mechanical systems;
Automated warehousing systems.
Gear hobbing machines, gear shapers, gear shaving machines, gear milling, gear grinding
machines and many kinds of gear-related machines.
Machining process   Forging, Machining, Hobbing, Milling, Shaving, Grinding, Heat treatment…

Detailed Photos

 

 

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Company Profile

FAQ

Q: How to ship the planetary gear to us?
A: It is available by air, sea, or train.

Q: How to pay the money?
A: T/T and L/C are preferred, with different currencies, including USD, EUR, RMB, etc.

Q: How can I know if the product is suitable for me?
A: >1ST confirm drawing and specification >2nd test sample >3rd start mass production.

Q: Can I come to your company to visit?
A: Yes, you are welcome to visit us at any time.

Shipping Cost:

Estimated freight per unit.



To be negotiated
Application: Machinery, Helical Gearbox
Hardness: Hardened Tooth Surface
Gear Position: External Gear
Samples:
US$ 50/Piece
1 Piece(Min.Order)

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Order Sample

helical gear
Customization:
Available

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Customized Request

helical gear

What are the advantages and disadvantages of using helical gears?

Helical gears offer several advantages and disadvantages compared to other types of gears. It’s important to consider these factors when selecting the appropriate gear type for a specific application. Here’s a detailed overview of the advantages and disadvantages of using helical gears:

Advantages of Helical Gears:

  • Smooth and Quiet Operation: Helical gears operate with less noise and vibration compared to spur gears. The inclined tooth profile allows for gradual tooth engagement, resulting in smooth and quiet gear meshing. This advantage makes helical gears suitable for applications that require low noise levels and improved operator comfort.
  • High Load-Carrying Capacity: The inclined teeth of helical gears provide a larger contact area compared to other gear types. This increased contact area enables helical gears to handle higher loads and transmit greater torque without excessive wear or risk of tooth failure. Helical gears are known for their high load-carrying capacity, making them suitable for heavy-duty applications.
  • Efficient Power Transmission: Helical gears offer efficient power transmission due to their inclined tooth design. The gradual engagement of helical teeth reduces impact and shock loads, minimizing energy losses and improving overall system efficiency. This advantage makes helical gears suitable for applications where power efficiency is critical.
  • Higher Gear Ratios: Helical gears can achieve higher gear ratios compared to other gear types. This capability allows for more precise speed control and torque conversion in various applications. Helical gears are ideal for systems that require fine-tuning of rotational speed and torque output.
  • Compact Design: Helical gears have a compact design that allows for efficient use of space within a system. The inclined tooth profile enables multiple gear sets to be positioned on parallel or intersecting shafts, facilitating compact gear arrangements. This advantage is particularly useful in applications with space constraints.
  • Good Meshing Characteristics: Helical gears exhibit excellent meshing characteristics, including smooth gear engagement and minimal backlash. The inclined tooth profile ensures precise gear meshing, resulting in accurate motion control and reduced vibration. This advantage is desirable in applications that require precise positioning and synchronization of components.

Disadvantages of Helical Gears:

  • Axial Thrust: Helical gears generate an axial thrust force due to the helix angle of the teeth. This axial thrust must be properly supported to prevent axial movement of the gear shafts. Additional thrust bearings or thrust plates may be required, adding complexity and cost to the gear system design.
  • Complex Manufacturing: The manufacturing process of helical gears is more complex compared to spur gears. The inclined tooth profile requires specialized cutting tools and machinery to produce accurate helical gears. This complexity can result in higher manufacturing costs and longer lead times for custom gears.
  • Efficiency Reduction at High Speeds: Helical gears may experience a reduction in efficiency at high rotational speeds. This reduction is due to an increase in axial thrust forces, which generate additional friction and energy losses. Proper lubrication and design considerations are necessary to mitigate this efficiency reduction.
  • Thrust Load Sensitivity: Helical gears are sensitive to axial thrust loads. Uneven distribution of axial loads or improper alignment of gears can lead to increased wear and premature failure. Careful consideration of gear design, proper alignment, and adequate thrust load support are essential to ensure gear longevity and reliable operation.
  • Limited Ratios: Although helical gears can achieve higher gear ratios compared to spur gears, their range of available gear ratios is limited compared to other gear types, such as worm gears or bevel gears. If a very high or very low gear ratio is required for a specific application, other gear types may be more suitable.

Considering these advantages and disadvantages, engineers can make informed decisions when selecting helical gears for their specific applications. By carefully evaluating the requirements and constraints of the system, they can leverage the strengths of helical gears while mitigating any potential limitations.

helical gear

What are the potential challenges in designing and manufacturing helical gears?

Designing and manufacturing helical gears can present various challenges that need to be addressed to ensure optimal performance and durability. Here’s a detailed explanation of the potential challenges encountered in designing and manufacturing helical gears:

  1. Complex Geometry: The geometry of helical gears is more complex compared to other gear types. The helical tooth profile requires precise calculations and manufacturing techniques to achieve the desired gear performance. Designers must account for factors such as helix angle, lead angle, tooth shape modification, and tooth contact pattern optimization. The complex geometry adds challenges to both the design and manufacturing processes.
  2. Manufacturing Accuracy: Achieving the required manufacturing accuracy for helical gears can be challenging. The gear teeth must have precise profiles and dimensions to ensure proper meshing and load distribution. The manufacturing processes, such as gear cutting (e.g., hobbing or grinding), must be carefully controlled to achieve the desired tooth geometry, surface finish, and dimensional accuracy. Maintaining tight tolerances and minimizing manufacturing variations are crucial to ensure the gears meet the design specifications.
  3. Axial Thrust and Bearing Considerations: Helical gears generate axial thrust forces due to the helix angle. The axial thrust can affect gear performance and may require additional measures to properly manage. Adequate bearing selection and support systems must be designed to accommodate the axial loads and ensure smooth gear operation. Consideration should also be given to the potential thrust-induced axial movement and its impact on gear alignment and system performance.
  4. Noise and Vibration: Helical gears can produce noise and vibration during operation, particularly if not designed or manufactured correctly. Factors such as improper tooth contact, misalignment, or excessive gear backlash can contribute to increased noise and vibration levels. Designers and manufacturers must carefully analyze and optimize the gear geometry, tooth contact patterns, and manufacturing processes to minimize noise and vibration and ensure quieter operation.
  5. Lubrication Challenges: Proper lubrication is critical for the smooth operation and longevity of helical gears. However, the helical tooth profile can pose challenges for lubricant distribution. The inclined teeth create a sliding action that may affect lubricant film formation and retention. Ensuring adequate lubrication to all gear surfaces, including the tooth flanks and root fillets, becomes important. Designing efficient lubrication systems and selecting appropriate lubricants that can withstand the sliding action and provide sufficient film thickness is crucial.
  6. Heat Dissipation: Helical gears can generate significant heat during operation, especially at high speeds or under heavy loads. Effective heat dissipation is essential to prevent overheating and premature wear. Designers and manufacturers need to consider heat dissipation mechanisms, such as proper housing design, cooling methods, and suitable materials with good thermal conductivity. Adequate ventilation and lubrication systems should also be designed to facilitate heat dissipation and maintain optimum operating temperatures.
  7. Tooling and Equipment: Manufacturing helical gears often requires specialized tooling and equipment. The gear cutting processes, such as hobbing or grinding, may necessitate specific tools, cutters, or grinding wheels. These tools must be properly selected, calibrated, and maintained to achieve accurate tooth profiles and finishes. The availability of suitable tooling and equipment, as well as the expertise to operate and maintain them, can be a challenge for gear manufacturers.
  8. Cost Considerations: Designing and manufacturing helical gears can involve higher costs compared to simpler gear types. The complexity of gear geometry, precision manufacturing requirements, specialized tooling, and additional considerations such as bearing support or noise reduction measures can contribute to increased production costs. Balancing the desired gear performance with cost considerations can be challenging for designers and manufacturers.

By addressing these potential challenges through careful design, precise manufacturing processes, and proper selection of materials and lubrication, engineers can overcome the complexities associated with designing and manufacturing helical gears and ensure high-quality gears that meet performance requirements and deliver long-term reliability.

helical gear

How do helical gears contribute to quieter operation compared to other gears?

Helical gears offer quieter operation compared to other types of gears due to their specific design characteristics. Here’s a detailed explanation of how helical gears contribute to quieter operation:

  • Inclined Tooth Profile: The primary reason for the quieter operation of helical gears is their inclined tooth profile. Unlike spur gears, which have straight teeth that engage abruptly, helical gears have angled teeth that gradually engage and disengage during rotation. This gradual engagement reduces the impact and shock loads that can generate noise and vibration.
  • Smooth Tooth Contact: The inclined teeth of helical gears provide a larger contact area between the gear teeth as they mesh. This increased contact area allows for a smoother and more uniform transfer of force between the gears. The gradual contact and continuous meshing of teeth help in distributing the load over a larger surface, minimizing concentrated stress points that can cause noise and wear.
  • Load Distribution: The inclined tooth profile of helical gears enables multiple teeth to be in contact at any given time. This distributed tooth engagement helps in spreading the load across a greater number of teeth, reducing the pressure on individual teeth and minimizing noise-causing stress concentrations. The load distribution also enhances the overall strength and durability of the gear mechanism.
  • Reduced Backlash: Backlash refers to the play or clearance between the mating teeth of gears. Helical gears typically exhibit lower backlash compared to spur gears due to their inclined tooth configuration. The close contact and meshing of helical gear teeth minimize the gap between the mating gears, reducing backlash and the resulting noise and vibration that can occur when the gears change direction or load conditions.
  • Smoothing and Noise Damping: The inclined teeth of helical gears have a rolling contact as they mesh, which helps in smoothing out any irregularities or imperfections on the tooth surfaces. This rolling action, combined with the continuous tooth contact, contributes to noise damping, reducing the transmission of vibrations and noise through the gear mechanism.
  • Lubrication and Surface Treatment: Proper lubrication and surface treatment of helical gears can further enhance their quiet operation. Lubricants help in reducing friction and wear between the gear teeth, minimizing noise generation. Additionally, surface treatments such as honing or grinding can improve the tooth surface quality, reducing friction, noise, and vibration during gear operation.

Collectively, the inclined tooth profile, smooth tooth contact, load distribution, reduced backlash, smoothing and noise damping effects, and proper lubrication contribute to the quieter operation of helical gears. These design characteristics make helical gears particularly suitable for applications where noise reduction, smooth operation, and low vibration levels are desired, such as in automotive transmissions, industrial machinery, and precision equipment.

China manufacturer Metric Hobbing Carbon Alloy Steel Precision Gearbox Reducer Herringbone CNC Machining Auto Spare Parts Metal Transmission Drive OEM Grinded Miter Helical Gear gear boxChina manufacturer Metric Hobbing Carbon Alloy Steel Precision Gearbox Reducer Herringbone CNC Machining Auto Spare Parts Metal Transmission Drive OEM Grinded Miter Helical Gear gear box
editor by CX 2023-09-18