China Custom NEMA 17 17HS6401s-Pg Extruder Gear for 3D Printer Stepper Motor Ratio Optional Planetary Gearbox Step 42 Motor Geared spiral bevel gear

Product Description

nema17 Planetary Gearbox Stepping Motor price on hot sale
General Specificati

Housing Material Metal
Bearing at Output Ball Bearings
Max.Radial Load(12mm from flange)  ≤80N
Max.Shaft Axial Load ≤30N
Radial Play of Shaft (near to Flange) ≤0.06mm
Axial Play of Shaft  ≤0.3mm
Backlash at No-load  1.5°

Electrical Specification:  

Model No. Step Angle Motor Length Current
/Phase
Resistance
/Phase
Inductance
/Phase
Holding Torque # of Leads Detent Torque Rotor Inertia Mass
  ( °) (L)mm A Ω mH kg.cm No. g.cm g.cm Kg
JK42HS34-1334 1.8 34 1.33 2.1 2.5 2.2 4 120 34 0.22
JK42HS34-0406 1.8 34 0.4 24 15 1.6 6 120 34 0.22
JK42HS40-1684 1.8 40 1.68 1.65 3.2 3.6 4 150 54 0.28
JK42HS40-1206 1.8 40 1.2 3 2.7 2.9 6 150 54 0.28
JK42HS48-1684 1.8 48 1.68 1.65 2.8 4.4 4 260 68 0.35
JK42HS48-1206 1.8 48 1.2 3.3 2.8 3.17 6 260 68 0.35
JK42HS60-1704 1.8 60 1.7 3 6.2 7.3 4 280 102 0.5
JK42HS60-1206 1.8 60 1.2 6 7 5.6 6 280 102 0.5

42HS Planetary Gearbox Specifications

Reduction ratio 3.71 5.18 13.76 19.2 26.8 51 71 99.5 139
Number of gear trains 1 2 3
Length(L2)   mm 27.3 35 42.7
Max.rated torque kg.cm 20 30 40
Short time permissible torque kg.cm 40 60 80
Weight   g 350 450 550

Products of special request can be made according to the customer request !

company information:

our certification:

Our Company offers 3 major series of products:Hybrid Stepper motors, Brushless Dc motor and Dc Brush motor.
We are always continues develop new type models.If you need other kinds of parts, please don’t hesitate to contact us.

Amy Gao

 

 

 

 

 

Application: Universal, Industrial, Household Appliances, Car, Power Tools
Operating Speed: Adjust Speed
Excitation Mode: Compound
Function: Run
Casing Protection: Protection Type
Number of Poles: 2
Samples:
US$ 21.5/Piece
1 Piece(Min.Order)

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Request Sample

Customization:
Available

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Customized Request

epicylic gear

How does a planetary gear arrangement handle variations in load and stress?

A planetary gear arrangement offers inherent advantages in handling variations in load and stress. Let’s explore how it achieves this:

  • Distributed Load:

One of the key advantages of a planetary gear arrangement is its ability to distribute the load among multiple gears. In this arrangement, the load is shared by the sun gear, planet gears, and ring gear, with each gear sharing a portion of the total load. As a result, the load on each individual gear is reduced compared to a single gear system, reducing stress concentration and enhancing the overall load-carrying capacity.

  • Load Sharing:

Planet gears in a planetary gear system share the load as they are meshed with both the sun gear and the ring gear. This load-sharing characteristic ensures that the load is distributed evenly across multiple gear teeth and contact points. Consequently, the stress on each gear is reduced, minimizing the risk of tooth failure and increasing the system’s durability.

  • Torque Splitting:

In a planetary gear arrangement, torque can be split among multiple paths. By controlling the distribution of torque between the sun gear and ring gear, variations in load can be managed effectively. If one gear path experiences higher stress, the torque distribution can be adjusted to shift the load to other gear paths, thereby balancing the stress and minimizing the risk of gear failure.

  • Multiple Stages:

Planetary gear arrangements can be designed with multiple stages, involving multiple sets of sun gears, planet gears, and ring gears. Each stage can handle a portion of the load, allowing for further load distribution and stress reduction. This multi-stage configuration enhances the gear arrangement’s capacity to handle variations in load and stress, making it suitable for demanding applications.

  • Robust Construction:

Planetary gear systems are known for their robust construction and high torque capacity. They are designed to withstand heavy loads and resist the effects of stress concentration. The use of high-quality materials and precise manufacturing techniques further enhances their ability to handle variations in load and stress.

In summary, a planetary gear arrangement handles variations in load and stress through distributed load sharing, torque splitting, multiple stages, and robust construction. By distributing the load among multiple gears, sharing the load between different paths, and employing multiple gear stages, a planetary gear arrangement can effectively manage variations in load and stress, ensuring reliable and durable operation in a wide range of applications.

epicylic gear

How do planetary gears contribute to speed reduction and torque amplification?

Planetary gears offer the capability of both speed reduction and torque amplification, making them versatile components in various mechanical systems. Let’s explore how planetary gears achieve these functions:

  • Speed Reduction:

Planetary gears can reduce rotational speed by utilizing their gear arrangement. The key elements involved in speed reduction are the sun gear, planet gears, and ring gear. Consider the following scenarios:

  • Epicyclic Gear Set:

In a basic planetary gear arrangement, when the sun gear is used as the input and the ring gear is fixed, the planet gears rotate on their own axes while also revolving around the sun gear. This configuration causes the output speed to be lower than the input speed. The reduction in speed is determined by the gear ratios between the sun gear, planet gears, and ring gear.

  • Multiple Stages:

Planetary gears can be combined into multiple stages, with each stage having its own set of sun gears, planet gears, and ring gears. By connecting the output of one stage to the input of another, the rotational speed can be further reduced. This allows for greater flexibility in achieving the desired speed reduction in complex mechanical systems.

  • Torque Amplification:

Planetary gears are also capable of amplifying torque, enabling them to handle higher loads and provide increased output torque. The torque amplification occurs in the following scenarios:

  • Epicyclic Gear Set:

When the sun gear is used as the input and the ring gear is the output, the planet gears rotate on their own axes while also revolving around the sun gear. This arrangement allows for torque amplification, meaning the output torque can be higher than the input torque. The specific torque amplification factor depends on the gear ratios and the number of planet gears in the system.

  • Combination of Gear Stages:

By combining multiple stages of planetary gears, torque amplification can be further increased. Each stage contributes to the overall torque amplification, allowing the system to handle even higher loads and transmit greater torque.

In summary, planetary gears contribute to speed reduction by utilizing the gear ratios between the sun gear, planet gears, and ring gear. They achieve torque amplification by utilizing the arrangement of the gears in an epicyclic gear set, as well as through the combination of multiple gear stages. These capabilities make planetary gears valuable in various applications where speed reduction and torque amplification are required, such as automotive transmissions, industrial machinery, and power transmission systems.

epicylic gear

What is the purpose of using planetary gears in machinery?

Planetary gears serve several important purposes in machinery and mechanical systems. Let’s delve into the key purposes and benefits of using planetary gears:

  • Gear Ratio Variation:

One of the primary purposes of planetary gears is to achieve different gear ratios. By varying the number of teeth on the sun gear, planet gears, and ring gear, a wide range of gear ratios can be obtained. This flexibility enables machinery to adapt to varying speed and torque requirements, allowing for precise control and efficient power transmission.

  • Torque Amplification:

Planetary gears are known for their ability to amplify torque. The arrangement of multiple gear sets in a compact design allows for torque multiplication. This can be particularly beneficial in applications where high torque is required while maintaining a smaller form factor. Planetary gears can efficiently transmit torque and handle heavy loads.

  • Compact Size:

Another advantage of planetary gears is their compact size. The internal gear meshing and the integration of multiple gear sets within a single gear system contribute to their space-saving design. This compactness is valuable in machinery where space constraints are a consideration, enabling the design of more compact and lightweight systems.

  • High Efficiency:

Planetary gears are known for their high efficiency in power transmission. The internal gear meshing and the distribution of load across multiple gear teeth result in efficient torque transfer with minimal power loss. This efficiency is crucial in machinery where energy conservation and optimization are important factors.

  • Directional Control:

Planetary gears allow for bidirectional power transmission. By controlling the direction of rotation of the input and output elements, the direction of rotation in the machinery can be easily changed. This feature is useful in applications that require reversing the direction of rotation or changing the rotational direction without the need for additional mechanisms.

  • Shock Absorption:

The arrangement of multiple gears in a planetary gear system provides inherent shock-absorbing capabilities. The distributed load between the gear teeth helps to dampen vibrations and absorb shocks, contributing to smoother operation and reduced wear on the system components.

  • Application Versatility:

Planetary gears find applications in a wide range of machinery and mechanical systems. They are commonly used in automotive transmissions, industrial machinery, robotics, aerospace systems, power generation equipment, and more. The versatility of planetary gears stems from their ability to provide precise control, compactness, high torque transmission, and efficient power transmission.

In summary, the purpose of using planetary gears in machinery is to achieve variable gear ratios, amplify torque, maintain compact size, ensure high efficiency in power transmission, enable bidirectional control, absorb shocks, and provide versatility for various applications. The unique characteristics of planetary gears make them valuable components in diverse machinery and mechanical systems.

China Custom NEMA 17 17HS6401s-Pg Extruder Gear for 3D Printer Stepper Motor Ratio Optional Planetary Gearbox Step 42 Motor Geared spiral bevel gearChina Custom NEMA 17 17HS6401s-Pg Extruder Gear for 3D Printer Stepper Motor Ratio Optional Planetary Gearbox Step 42 Motor Geared spiral bevel gear
editor by CX 2023-09-23