China wholesaler Forging Steel Hobbing Conditioning Quenching Transmission Planetary Helical Gear with Hot selling

Product Description

Forging Alloy Steel Hobbing Conditioning Quenching Transmission Planetary Helical Gear

The precision of CHINAMFG gear grinding precision gear can reach 5~6 levels. The corresponding dimensional accuracy can be achieved through precision gear grinding machine and grinder. It has the characteristics of stable transmission, low noise, long service life, and is suitable for high-power and heavy load.

Product Description

Product name helical gear
Materials Available Stainless Steel, Carbon Steel, Brass,  Bronze, Iron, Aluminum Alloy,Copper,Plastic etc
Heat Treatment Quenching & Tempering, Carburizing & Quenching, High-frequency Hardening, Carbonitriding……
Surface Treatment Carburizing and Quenching,Tempering ,Tooth suface high quenching Hardening,Tempering
BORE Finished bore, Pilot Bore, Special request
Processing Method Molding, Shaving, Hobbing, Drilling, Tapping, Reaming, Manual Chamfering, Grinding etc
Pressure Angle 20 Degree
Hardness 55- 60HRC
Size Customer Drawings & ISO standard
Package Wooden Case/Container and pallet, or made-to-order
Certificate ISO9001:2008
Applications Electric machinery, metallurgical machinery, environmental protection machinery, electronic and electrical appliances, road construction machinery, chemical machinery, food machinery, light industrial machinery, mining machinery, transportation machinery, construction machinery, building materials machinery, cement machinery, rubber machinery, water conservancy machinery and petroleum machinery
Machining Process Material preparation, normalizing, rough turning, quenching and tempering, semi fine turning outer circle, rough turning spiral surface, fine turning (fine grinding) inner hole end face, keyway, semi fine turning spiral surface, pliers (rest incomplete teeth), semi fine grinding outer circle, semi fine grinding spiral surface, grinding center hole, fine grinding outer circle, fine grinding spiral surface, finished product inspection
Advantages 1. Produce strictly in accordance with ANSI or DIN standard dimension
2. Material: SCM 415 steel 
3. Bore: Finished bore
4. Precision grade: DIN 5 to DIN 7
5. Surface treatment: Carburizing and Quenching
6. Module: From 1 to 4
7. Tooth: From Z15 to Z70


Number Number of Teeth Shaft Bore Dia. AH7 (1mm Increment) Twisting Direction B C D E F G
Type Module Straight Bore Straight Bore+Tap Keyway+Tap
Straight Bore

Straight Bore+Tap


1.0 20 6 8 L(Left)


17 20 22 8 10 18
22~ 28 8 8~13 18~20 22~28 24~30
30~48 10 10~17 25~30 30~48 32~50
50~70 12 12~17 35~40 50~70 52~72
80~100 15 15~30 50 80~100 82~102
1.5 20~26 12 12~17 24~32 30~39 33~42 12 12 24
28~44 15 15~30 36~50 42~67.5 45~70.5
45~52 18 18~40 50~60 72~78 75~81
60~100 20 20-50 60~70 90~150 93·153
2.0 15~18 12 12~17 24~30 30~36 34~40 16 13 29
20~28 15 15·22 32~45 40~56 44~60
30~36 18 18~40 50 60~72 64~76
40~48 20 20~44 60 80~96 84~100
50~100 25 25~60 60~100 100~200 104~204
2.5 15~18 15 15~30 30~38 37.5~45 42.5~50 20 14 34
20~24 18 18~40 40~48 50~60 55~65
25~36 20 20~50 50~70 62.5~90 67.5~95
40~60 25 25~70 70~80 90~150 95~155
3.0 15~18 18 18~22 36~40 45~54 51~60 25 16 4


Company Profile

Packaging & Shipping


Main Markets? North America, South America, Eastern Europe , West Europe , North Europe, South Europe, Asia
How to order? * You send us drawing or sample
* We carry through project assessment
* We give you our design for your confirmation
* We make the sample and send it to you after you confirmed our design
* You confirm the sample then place an order and pay us 30% deposit
* We start producing
* When the goods is done, you pay us the balance after you confirmed pictures or tracking numbers.
* Trade is done, thank you!!


If you are interested in our products, please tell us which materials, type, width, length u want.

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Application: Machinery, Agricultural Machinery, Machine Tool Manufacturing
Hardness: Hardened Tooth Surface
Gear Position: External Gear
Manufacturing Method: Rolling Gear
Toothed Portion Shape: Spur Gear
Material: S45c
US$ 10/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

epicylic gear

What is the significance of the gear ratio in planetary gear arrangements?

The gear ratio plays a significant role in planetary gear arrangements, offering several key advantages and applications. Let’s explore the significance of the gear ratio:

  • Speed Control:

The gear ratio in planetary gear arrangements allows for precise speed control. By adjusting the sizes and numbers of teeth on the sun gear, planet gears, and ring gear, different gear ratios can be achieved. The gear ratio determines the relationship between the input speed and the output speed. By changing the gear ratio, the speed of the output shaft can be increased or decreased relative to the input speed. This speed control capability is crucial in various applications, such as automotive transmissions, industrial machinery, and robotics, where specific speed requirements are necessary for optimal performance.

  • Torque Amplification:

The gear ratio also enables torque amplification in planetary gear arrangements. By fixing the ring gear and inputting power to the sun gear, the planet gears rotate and contribute to multiplying the torque. The gear ratio determines the extent of torque amplification. This torque amplification feature is beneficial in applications that require higher torque output while maintaining a smaller physical size. It allows for increased torque transmission without the need for larger and heavier gear systems.

  • Multiple Speeds:

Another significance of the gear ratio is the ability to achieve multiple speeds within a single gear system. Planetary gears offer the advantage of having multiple gear sets within a compact arrangement. By combining different gear ratios using various combinations of sun gears, planet gears, and ring gears, it is possible to obtain multiple output speeds. This versatility is useful in applications that require variable speed control or the ability to switch between different operational modes.

  • Power Distribution:

The gear ratio also influences power distribution in planetary gear arrangements. As torque is transmitted through the gears, the gear ratio determines how the power is distributed among the different components. By adjusting the gear ratio, it is possible to distribute power more evenly or concentrate it on specific gear elements. This power distribution capability allows for optimized performance and load-sharing in the gear system.

  • Efficiency and Mechanical Advantage:

The gear ratio affects the efficiency and mechanical advantage of planetary gear arrangements. The gear ratio determines the trade-off between speed and torque. Increasing the gear ratio results in higher torque output but lower speed, while decreasing the gear ratio yields higher speed but lower torque. By selecting the appropriate gear ratio, it is possible to achieve the desired balance between speed and torque while maximizing the overall efficiency of the system.

In summary, the gear ratio in planetary gear arrangements is significant for speed control, torque amplification, achieving multiple speeds, power distribution, efficiency, and mechanical advantage. Understanding and selecting the appropriate gear ratio is crucial for optimizing performance and meeting the specific requirements of different mechanical setups.

epicylic gear

How do planetary gears handle variations in tooth engagement during operation?

Planetary gears are designed to handle variations in tooth engagement during operation, ensuring smooth and reliable performance. Let’s explore how planetary gears address these variations:

  • Tolerance for Misalignment:

Planetary gears are designed with a certain degree of tolerance for misalignment. This means that slight variations in tooth engagement due to manufacturing tolerances, assembly, or operating conditions are accommodated without causing significant impact on the gear system. The gear teeth are carefully designed with appropriate profiles, clearances, and backlash to allow for some degree of misalignment while maintaining proper functioning.

  • Load Distribution:

The arrangement of multiple planet gears in a planetary gear system helps distribute the load across multiple gear teeth. Each planet gear shares the load with the adjacent gears, reducing the stress on individual teeth and promoting even tooth engagement. This load distribution capability helps minimize localized wear, noise, and vibration, resulting in smoother and more efficient operation.

  • Flexible Mounting and Support:

Planetary gears are often mounted on flexible support structures, such as bearings or flexible couplings. These components help absorb and compensate for small variations in tooth engagement during operation. The flexible mounting and support systems provide some degree of flexibility and compliance, allowing the gears to self-adjust and maintain proper tooth contact under varying operating conditions.

  • Lubrication and Cooling:

Proper lubrication and cooling play a crucial role in handling variations in tooth engagement. Lubricants reduce friction and wear between gear teeth, ensuring smooth operation and minimizing the impact of tooth engagement variations. Additionally, effective cooling mechanisms help dissipate heat generated during operation, preventing excessive temperature rise that could affect the gear meshing performance.

  • Robust Construction:

Planetary gears are typically constructed using high-strength materials and precise manufacturing techniques. This robust construction enhances the gear system’s ability to withstand variations in tooth engagement. By ensuring high-quality gear components, proper heat treatment, and stringent quality control, planetary gears are built to handle the dynamic loads and variations encountered during operation.

In summary, planetary gears handle variations in tooth engagement through their tolerance for misalignment, load distribution among multiple planet gears, flexible mounting and support, effective lubrication and cooling, and robust construction. These design considerations and features enable planetary gears to maintain proper tooth contact, minimize wear and noise, and ensure reliable performance in various applications, including automotive transmissions, industrial machinery, and power transmission systems.

epicylic gear

How do planetary gears differ from other types of gear arrangements?

Planetary gears, also known as epicyclic gears, possess unique characteristics and differ from other types of gear arrangements in several ways. Let’s explore the distinguishing features of planetary gears:

  • Internal Gear Meshing:

Unlike other gear arrangements where the gears typically mesh externally, planetary gears have internal gear meshing. This means that the gear teeth of the sun gear, planet gears, and ring gear are located on the inside surfaces, allowing for compact and space-efficient designs.

  • Multiple Gear Sets:

Planetary gear systems consist of multiple gear sets working in parallel or series. These gear sets include the sun gear, planet gears, and ring gear. By combining and configuring these gear sets, different gear ratios and torque distributions can be achieved, providing versatility and flexibility in various applications.

  • Central Sun Gear:

A distinctive feature of planetary gears is the presence of a central sun gear. The sun gear is typically driven by an input source, such as a motor or engine. It is located at the center of the gear arrangement and serves as the primary driver for overall gear operation.

  • Orbiting Planet Gears:

In planetary gears, the planet gears rotate on their own axes while simultaneously orbiting around the sun gear. This combination of rotational and orbital movement allows for efficient torque transmission and enables the gear arrangement to achieve different gear ratios based on the relative sizes and positions of the gears.

  • Compact Size:

One of the key advantages of planetary gears is their compact size. The internal gear meshing and the arrangement of multiple gear sets within a single gear system contribute to their space-saving design. This makes planetary gears suitable for applications where size and weight restrictions are important considerations.

  • Wide Range of Applications:

Planetary gears find applications in various industries and mechanical systems. They are commonly used in automotive transmissions, industrial machinery, robotics, aerospace systems, and more. Their ability to achieve different gear ratios, transmit torque efficiently, and operate in compact spaces makes them versatile solutions in diverse engineering applications.

In summary, planetary gears differ from other types of gear arrangements due to their internal gear meshing, multiple gear sets, central sun gear, orbiting planet gears, compact size, and wide range of applications. These characteristics make planetary gears suitable for achieving various gear ratios, transmitting torque efficiently, and meeting the space requirements of different mechanical systems.

China wholesaler Forging Steel Hobbing Conditioning Quenching Transmission Planetary Helical Gear with Hot sellingChina wholesaler Forging Steel Hobbing Conditioning Quenching Transmission Planetary Helical Gear with Hot selling
editor by Dream 2024-04-22