China 28mm Micro Two Stage High Torque Planetary Gearbox diy planetary gearbox

Solution Description

28mm Planetary Gearbox

Mechanical Proportions:

Gearbox Description:
 

Housing 
content
Bearing
 at output
Radial load 
(10mm from the flange)
Shaft 
axial load
Shaft press 
fit force, max.
Radial play 
of shaft
Thrust play 
of shaft
Backlash
 at no-load
Metal Sleeve bearings ≤3Kgf ≤2.5Kgf ≤10Kgf ≤0.08mm ≤0.2mm ≤3°
Metallic Ball bearings ≤3.5Kgf ≤2.5Kgf ≤10Kgf ≤0.05mm ≤0.2mm ≤3°

Motor Shaft Pinion Specification:
 

Module No. of teeth Pressure angle Hole diameter Reduction ratio.
.5 11 20° two.28 1/5,1/19,1/27,1/seventy one,1/a hundred,1/139,1/264,1/516,1/721
.five seventeen 20° two.28 1/4,1/fourteen,1/51,1/189
.five 8 20° 2.28 one/35,1/939

Gearbox Specification:
 

Reduction 
ratio
one/four one/five 1/fourteen one/19 1/27 one/35 one/51 one/seventy one 1/one hundred one/139 1/189 1/264 1/516 one/721 1/939
Rated tolerance 
torque (Kg.cm Max.)
2 two three 3 4 4 6 six 8 8 ten 10 ten 10 10
Max momentary tolerance
 torque (Kg.cm )
6 six nine 9 12 12 eighteen 18 24 24 30 thirty thirty thirty 30
Performance 80% 80% 70% 70% 70% 70% sixty% sixty% sixty% sixty% 50% fifty% 50% fifty% 50%
Length
(L-mm)
24.5 24.5 30.nine thirty.9 30.nine 30.9 37.3 37.three 37.3 37.three 43.seven 43.seven 43.seven forty three.7 43.seven
Bodyweight(g)
Sleeve bearings
seventy one 71 81 81 81 81 ninety four 94 ninety four 94 108 108 108 108 108
Weight(g)
Sleeve bearings
70 70 eighty 80 80 80 93 93 ninety three 93 107 107 107 107 107

About Us:

We specialised in investigating, establishing and servicing electric motors, gearbox and high precision gears with the modest modules.

Soon after several years of development, we have an independent item style and the R&D team, services team, and professional high quality control staff.

What’s much more, we have 2 joint ventures. 1 is located in HangZhou, which produces hybrid stepper motor, valuable linear stepper motor, brushless DC motor, servo motor, stepper motor driver, brushless motor driver, encoder and brake.

One more 1 is positioned in HangZhou, which makes DC equipment motor. The factory has dozens of CNC machines and substantial precision test gear, implements the procedure management and computerized operation in most creating process.

We also have 2 cooperation factories. A single is creating AC reversible synchronous motor and AC servo motor, the other 1 is making linear long term stepper motor, long lasting stepper motors.

Customer’s Checking out:

Packaging:

 

US $5-20
/ Piece
|
500 Pieces

(Min. Order)

###

Application: Motor
Layout: Coaxial
Hardness: Hardened Tooth Surface
Size: 28mm
Transport Package: Carton or Pallet
Specification: RoHS, CE

###

Customization:

###

Housing 
material
Bearing
 at output
Radial load 
(10mm from the flange)
Shaft 
axial load
Shaft press 
fit force, max.
Radial play 
of shaft
Thrust play 
of shaft
Backlash
 at no-load
Metal Sleeve bearings ≤3Kgf ≤2.5Kgf ≤10Kgf ≤0.08mm ≤0.2mm ≤3°
Metal Ball bearings ≤3.5Kgf ≤2.5Kgf ≤10Kgf ≤0.05mm ≤0.2mm ≤3°

###

Module No. of teeth Pressure angle Hole diameter Reduction ratio.
0.5 11 20° 2.28 1/5,1/19,1/27,1/71,1/100,1/139,1/264,1/516,1/721
0.5 17 20° 2.28 1/4,1/14,1/51,1/189
0.5 8 20° 2.28 1/35,1/939

###

Reduction 
ratio
1/4 1/5 1/14 1/19 1/27 1/35 1/51 1/71 1/100 1/139 1/189 1/264 1/516 1/721 1/939
Rated tolerance 
torque (Kg.cm Max.)
2 2 3 3 4 4 6 6 8 8 10 10 10 10 10
Max momentary tolerance
 torque (Kg.cm )
6 6 9 9 12 12 18 18 24 24 30 30 30 30 30
Efficiency 80% 80% 70% 70% 70% 70% 60% 60% 60% 60% 50% 50% 50% 50% 50%
Length
(L-mm)
24.5 24.5 30.9 30.9 30.9 30.9 37.3 37.3 37.3 37.3 43.7 43.7 43.7 43.7 43.7
Weight(g)
Sleeve bearings
71 71 81 81 81 81 94 94 94 94 108 108 108 108 108
Weight(g)
Sleeve bearings
70 70 80 80 80 80 93 93 93 93 107 107 107 107 107
US $5-20
/ Piece
|
500 Pieces

(Min. Order)

###

Application: Motor
Layout: Coaxial
Hardness: Hardened Tooth Surface
Size: 28mm
Transport Package: Carton or Pallet
Specification: RoHS, CE

###

Customization:

###

Housing 
material
Bearing
 at output
Radial load 
(10mm from the flange)
Shaft 
axial load
Shaft press 
fit force, max.
Radial play 
of shaft
Thrust play 
of shaft
Backlash
 at no-load
Metal Sleeve bearings ≤3Kgf ≤2.5Kgf ≤10Kgf ≤0.08mm ≤0.2mm ≤3°
Metal Ball bearings ≤3.5Kgf ≤2.5Kgf ≤10Kgf ≤0.05mm ≤0.2mm ≤3°

###

Module No. of teeth Pressure angle Hole diameter Reduction ratio.
0.5 11 20° 2.28 1/5,1/19,1/27,1/71,1/100,1/139,1/264,1/516,1/721
0.5 17 20° 2.28 1/4,1/14,1/51,1/189
0.5 8 20° 2.28 1/35,1/939

###

Reduction 
ratio
1/4 1/5 1/14 1/19 1/27 1/35 1/51 1/71 1/100 1/139 1/189 1/264 1/516 1/721 1/939
Rated tolerance 
torque (Kg.cm Max.)
2 2 3 3 4 4 6 6 8 8 10 10 10 10 10
Max momentary tolerance
 torque (Kg.cm )
6 6 9 9 12 12 18 18 24 24 30 30 30 30 30
Efficiency 80% 80% 70% 70% 70% 70% 60% 60% 60% 60% 50% 50% 50% 50% 50%
Length
(L-mm)
24.5 24.5 30.9 30.9 30.9 30.9 37.3 37.3 37.3 37.3 43.7 43.7 43.7 43.7 43.7
Weight(g)
Sleeve bearings
71 71 81 81 81 81 94 94 94 94 108 108 108 108 108
Weight(g)
Sleeve bearings
70 70 80 80 80 80 93 93 93 93 107 107 107 107 107

Planetary Gearbox Advantages and Disadvantages

A planetary gearbox is a type of mechanical drive with a single output shaft. They are suitable for both clockwise and counterclockwise rotations, have less inertia, and operate at higher speeds. Here are some advantages and disadvantages of this type of gearbox. Let us see what these advantages are and why you should use them in your applications. Listed below are some of the benefits of planetary gearboxes.
planetarygearbox

Suitable for counterclockwise and clockwise rotation

If you want to teach children about the clock hands, you can buy some resources for counterclockwise and asymmetrical rotation. These resources include worksheets for identifying degrees of rotation, writing rules for rotation, and visual processing. You can also use these resources to teach angles. For example, the translation of shapes activity pack helps children learn about the rotation of geometric shapes. Similarly, the visual perception activity sheet helps children understand how to process information visually.
Various studies have been done to understand the anatomical substrate of rotations. In a recent study, CZPT et al. compared the position of the transitional zone electrocardiographically and anatomically. The authors found that the transitional zone was normal in nine of 33 subjects, indicating that rotation is not a sign of disease. Similarly, a counterclockwise rotation may be caused by a genetic or environmental factor.
The core tip data should be designed to work in both clockwise and counterclockwise rotation. Counterclockwise rotation requires a different starting point than a clockwise rotation. In North America, star-delta starting is used. In both cases, the figure is rotated about its point. Counterclockwise rotation, on the other hand, is done in the opposite direction. In addition, it is possible to create counterclockwise rotation using the same gimbal.
Despite its name, both clockwise and counterclockwise rotation requires a certain amount of force to rotate. When rotating clockwise, the object faces upwards. Counterclockwise rotation, on the other hand, starts from the top position and heads to the right. If rotating in the opposite direction, the object turns counterclockwise, and vice versa. The clockwise movement, in contrast, is the reverse of counterclockwise rotation.

Has less inertia

The primary difference between a planetary gearbox and a normal pinion-and-gear reducer is the ratio. A planetary gearbox will produce less inertia, which is an important advantage because it will reduce torque and energy requirements. The ratio of the planetary gearbox to its fixed axis counterpart is a factor of three. A planetary gearbox has smaller gears than a conventional planetary, so its inertia is proportional to the number of planets.
Planetary gears are less inertia than spur gears, and they share the load across multiple gear teeth. This means that they will have low backlash, and this is essential for applications with high start-stop cycles and frequent rotational direction changes. Another benefit is the high stiffness. A planetary gearbox will have less backlash than a spur gearbox, which means that it will be more reliable.
A planetary gearbox can use either spur or helical gears. The former provides higher torque ratings while the latter has less noise and stiffness. Both types of gears are useful in motorsports, aerospace, truck transmissions, and power generation units. They require more assembly time than a conventional parallel shaft gear, but the PD series is the more efficient alternative. PD series planetary gears are suitable for many applications, including servo and robotics.
In contrast, a planetary gear set can have varying input speed. This can affect the frequency response of the gearset. A mathematical model of the two-stage planetary gears has non-stationary effects and correlates with experimental findings. Fig. 6.3 shows an addendum. The dedendum’s minimum value is approximately 1.25m. When the dedendum is at its smallest, the dedendum has less inertia.
planetarygearbox

Offers greater reliability

The Planetary Gearbox is a better option for driving a vehicle than a standard spur gearbox. A planetary gearbox is less expensive, and they have better backlash, higher load capacity, and greater shock loads. Unlike spur gearboxes, however, mechanical noise is virtually nonexistent. This makes them more reliable in high-shock situations, as well as in a wide range of applications.
The Economy Series has the same power density and torque capacity of the Precision Helical Series, but it lacks the precision of the latter. In contrast, Economy Series planetary gearboxes feature straight spur planetary gearing, and they are used in applications requiring high torque. Both types of gearboxes are compatible with NEMA servo motors. If torque density is important, a planetary gearbox is the best choice.
The Dispersion of External Load: The SSI model has been extensively used to model the reliability of planetary gear systems. This model takes the contact force and fatigue strength of the system as generalized stress and strength. It also provides a theoretical framework to evaluate the reliability of planetary gear systems. It also has many other advantages that make it the preferred choice for high-stress applications. The Planetary Gearbox offers greater reliability and efficiency than traditional rack and pinion gear systems.
Planetary gearing has greater reliability and compact design. Its compact design allows for wider applications with concerns about space and weight. Additionally, the increased torque and reduction makes planetary gearboxes an excellent choice for a wide variety of applications. There are three major types of planetary gearboxes, each with its own advantages. This article describes a few of them. Once you understand their workings, you will be able to choose the best planetary gearbox for your needs.

Has higher operating speeds

When you look at planetary gearboxes, you might be confused about which one to choose. The primary issue is the application of the gearbox. You must also decide on secondary factors like noise level, corrosion resistance, construction, price, and availability worldwide. Some constructors work faster than others and deliver the gearboxes on the same day. However, the latter ones often deliver the planetary gearbox out of stock.
Compared to conventional gearboxes, a planetary gearbox can run at higher speeds when the input speed fluctuates. However, these gears are not very efficient in high-speed applications because of their increased noise levels. This makes planetary gears unsuitable for applications involving a great deal of noise. That is why most planetary gears are used in small-scale applications. There are some exceptions, but in general, a planetary gearbox is better suited for applications with higher operating speeds.
The basic planetary gearbox is a compact alternative to normal pinion-and-gear reducers. They can be used in a wide variety of applications where space and weight are concerns. Its efficiency is also higher, delivering 97% of the power input. It comes in three different types based on the performance. A planetary gearbox can also be classified as a worm gear, a spur gear, or a sprocket.
A planetary gearhead has a high-precision design and can generate substantial torque for their size. It also reduces backlash to two arc-min. Additionally, it is lubricated for life, which means no maintenance is needed. It can fit into a small machine envelope and has a small footprint. Moreover, the helical crowned gearing provides fast positioning. A sealed gearbox prevents abrasive dust from getting into the planetary gearhead.
planetarygearbox

Has drawbacks

The design of a planetary gearbox is compact and enables high torque and load capability in a small space. This gear arrangement also reduces the possibility of wear and tear. Planet gears are arranged in a planetary fashion, allowing gears to shift under load and a uniform distribution of torque. However, some disadvantages of planetary gears must be considered before investing in this gearbox.
While the planetary gearbox is a high precision motion-control device, its design and maintenance requirements are a concern. The bearing load is high, requiring frequent lubrication. Also, they are inaccessible. Despite these drawbacks, planetary gearboxes are suitable for a variety of tasks. They also have low backlash and high torsional stiffness, making them excellent choices for many applications.
As a result, the speed of a planetary gearbox varies with load and speed. At lower ratios, the sun gear becomes too large in relation to the planet gears. As the ratio increases, the sun gear will become too low, reducing torque. The planetary gears also reduce their torque in high-speed environments. Consequently, the ratio is a crucial consideration for planetary gearbox condition monitoring.
Excess drag may result from out-of-tolerance components or excessive lubrication. Drag should be measured both in directions and be within acceptable ranges. Grease and oil lubrication are two common planetary gearbox lubricants, but the choice is largely dependent on your application. While grease lubricates planetary gears well, oil needs maintenance and re-lubrication every few thousand hours.

China 28mm Micro Two Stage High Torque Planetary Gearbox     diy planetary gearboxChina 28mm Micro Two Stage High Torque Planetary Gearbox     diy planetary gearbox
editor by czh 2023-01-20