China factory PC200 Excavator Final Drive Gear (20Y-27-22150 20Y-27-22130 20Y-27-22140 20Y-27-22120) with Free Design Custom

Product Description

  construction machine pump

gear pump , hydraulic pump , main pump , WATER pump
fit machine :
Dozer: D31 D53 D60 D65 D75 D80 D85 D135 D155 D355 D375 D475
Loader: WA1-0140     МоTор    
    ND 062500-3740     МоTор    
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    707-99-32140    STEERING CLY KIT    
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723-47-26101 708-2H-00181 708-8H-00320 207-27-00371 706-7K-01011
723-47-26102 708-2H-00110   207-27-00372 706-7K-01011
723-47-26103 708-2G-00700   207-27-00373 706-7K-01040
723-47-26104     207-27-00441 706-7K-01170
723-47-26105     207-27-00410 706-7K-01080
723-48-26101     207-27-00411  
723-48-26102     207-27-00412  
723-41-08100     207-27-00413  
723-49-26100        
723-49-26101        
723-49-26102        
723-49-26103        
723-47-27500 708-2H-00191 706-8J-01011 708-8F-00250  706-7K-01040
723-47-27800 708-2H-00120 706-8J-01020 208-27-00252  
723-47-27801 708-2H-00026  706-8L-01030    
723-47-27802 708-2H-00027 706-88-00150    
723-49-28900 708-2H-04760 706-88-00151    
723-49-28901        

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709-23-13601 21W-60-22111   21W-60-22130   21W-26-00020
709-23-13602 705-40-01370   21W-60-22410   21W-26-00021
709-23-13501     21W-60-22411    
709-23-13502          
21W-60-22120          
723-29-50600 708-3T-00220 22P-60-11301 21W-27-41110   21W-26-00100
723-29-50601 708-3T-00280   TZ119D1000-00   21W-26-51011
723-25-52200 708-3T-00281        
723-25-52201 708-3T-01140        
723-25-52202 708-3T-01131        
  708-3T-00283        
723-58-13300 708-1L-00530   21Y-60-21210   21Y-26-01000
723-58-13301 708-1L-00551        
723-59-13100          
723-59-13101          
723-59-13102          
723-59-13103          
723-47-10103 708-2L-00150 706-75-10400   706-75-11300 205-26-00021
723-47-10105 708-2L-00151 706-75-10402   706-75-11301 205-26-00022
723-47-10107 708-2L-00052 708-8F-00110   706-75-11302 205-26-00023
723-47-10500 708-2L-00053 708-8F-00111   706-75-11303 205-26-00040
723-47-10501 708-2L-00054 708-8F-00061   706-75-11304 205-26-00041
723-47-12100 708-2L-00055 708-8F-00211   706-7G-01040 205-26-00042
723-47-12101 708-2L-00056 708-8F-00170      
723-47-13103 708-2L-00461 708-8F-00171      
723-47-13104 708-2L-00460        
723-47-13700 708-2L-00411        
723-47-13701 708-2L-00300        
723-47-13702 708-2L-00050        
723-46-20703 708-2L-00600        
723-47-26101 708-2H-00181 708-8H-00320 207-27-00371 706-7K-01011
723-47-26102 708-2H-00110   207-27-00372 706-7K-01011
723-47-26103 708-2G-00700   207-27-00373 706-7K-01040
723-47-26104     207-27-00441 706-7K-01170
723-47-26105     207-27-00410 706-7K-01080
723-48-26101     207-27-00411  
723-48-26102     207-27-00412  
723-41-08100     207-27-00413  
723-49-26100        
723-49-26101        
723-49-26102        
723-49-26103        
723-47-27500 708-2H-00191 706-8J-01011 708-8F-00250  706-7K-01040
723-47-27800 708-2H-00120 706-8J-01020 208-27-00252  
723-47-27801 708-2H-00026  706-8L-01030    
723-47-27802 708-2H-00027 706-88-00150    
723-49-28900 708-2H-04760 706-88-00151    
723-49-28901        

###

709-23-13601 21W-60-22111   21W-60-22130   21W-26-00020
709-23-13602 705-40-01370   21W-60-22410   21W-26-00021
709-23-13501     21W-60-22411    
709-23-13502          
21W-60-22120          
723-29-50600 708-3T-00220 22P-60-11301 21W-27-41110   21W-26-00100
723-29-50601 708-3T-00280   TZ119D1000-00   21W-26-51011
723-25-52200 708-3T-00281        
723-25-52201 708-3T-01140        
723-25-52202 708-3T-01131        
  708-3T-00283        
723-58-13300 708-1L-00530   21Y-60-21210   21Y-26-01000
723-58-13301 708-1L-00551        
723-59-13100          
723-59-13101          
723-59-13102          
723-59-13103          
723-47-10103 708-2L-00150 706-75-10400   706-75-11300 205-26-00021
723-47-10105 708-2L-00151 706-75-10402   706-75-11301 205-26-00022
723-47-10107 708-2L-00052 708-8F-00110   706-75-11302 205-26-00023
723-47-10500 708-2L-00053 708-8F-00111   706-75-11303 205-26-00040
723-47-10501 708-2L-00054 708-8F-00061   706-75-11304 205-26-00041
723-47-12100 708-2L-00055 708-8F-00211   706-7G-01040 205-26-00042
723-47-12101 708-2L-00056 708-8F-00170      
723-47-13103 708-2L-00461 708-8F-00171      
723-47-13104 708-2L-00460        
723-47-13700 708-2L-00411        
723-47-13701 708-2L-00300        
723-47-13702 708-2L-00050        
723-46-20703 708-2L-00600        

The Difference Between Planetary Gears and Spur Gears

A spur gear is a type of mechanical drive that turns an external shaft. The angular velocity is proportional to the rpm and can be easily calculated from the gear ratio. However, to properly calculate angular velocity, it is necessary to know the number of teeth. Fortunately, there are several different types of spur gears. Here's an overview of their main features. This article also discusses planetary gears, which are smaller, more robust, and more power-dense.
Planetary gears are a type of spur gear

One of the most significant differences between planetary gears and spurgears is the way that the two share the load. Planetary gears are much more efficient than spurgears, enabling high torque transfer in a small space. This is because planetary gears have multiple teeth instead of just one. They are also suitable for intermittent and constant operation. This article will cover some of the main benefits of planetary gears and their differences from spurgears.
While spur gears are more simple than planetary gears, they do have some key differences. In addition to being more basic, they do not require any special cuts or angles. Moreover, the tooth shape of spur gears is much more complex than those of planetary gears. The design determines where the teeth make contact and how much power is available. However, a planetary gear system will be more efficient if the teeth are lubricated internally.
In a planetary gear, there are three shafts: a sun gear, a planet carrier, and an external ring gear. A planetary gear is designed to allow the motion of one shaft to be arrested, while the other two work simultaneously. In addition to two-shaft operation, planetary gears can also be used in three-shaft operations, which are called temporary three-shaft operations. Temporary three-shaft operations are possible through frictional coupling.
Among the many benefits of planetary gears is their adaptability. As the load is shared between several planet gears, it is easier to switch gear ratios, so you do not need to purchase a new gearbox for every new application. Another major benefit of planetary gears is that they are highly resistant to high shock loads and demanding conditions. This means that they are used in many industries.
Gear

They are more robust

An epicyclic gear train is a type of transmission that uses concentric axes for input and output. This type of transmission is often used in vehicles with automatic transmissions, such as a Lamborghini Gallardo. It is also used in hybrid cars. These types of transmissions are also more robust than conventional planetary gears. However, they require more assembly time than a conventional parallel shaft gear.
An epicyclic gearing system has three basic components: an input, an output, and a carrier. The number of teeth in each gear determines the ratio of input rotation to output rotation. In some cases, an epicyclic gear system can be made with two planets. A third planet, known as the carrier, meshes with the second planet and the sun gear to provide reversibility. A ring gear is made of several components, and a planetary gear may contain many gears.
An epicyclic gear train can be built so that the planet gear rolls inside the pitch circle of an outer fixed gear ring, or "annular gear." In such a case, the curve of the planet's pitch circle is called a hypocycloid. When epicycle gear trains are used in combination with a sun gear, the planetary gear train is made up of both types. The sun gear is usually fixed, while the ring gear is driven.
Planetary gearing, also known as epicyclic gear, is more durable than other types of transmissions. Because planets are evenly distributed around the sun, they have an even distribution of gears. Because they are more robust, they can handle higher torques, reductions, and overhung loads. They are also more energy-dense and robust. In addition, planetary gearing is often able to be converted to various ratios.
Gear

They are more power dense

The planet gear and ring gear of a compound planetary transmission are epicyclic stages. One part of the planet gear meshes with the sun gear, while the other part of the gear drives the ring gear. Coast tooth flanks are used only when the gear drive works in reversed load direction. Asymmetry factor optimization equalizes the contact stress safety factors of a planetary gear. The permissible contact stress, sHPd, and the maximum operating contact stress (sHPc) are equalized by asymmetry factor optimization.
In addition, epicyclic gears are generally smaller and require fewer space than helical ones. They are commonly used as differential gears in speed frames and in looms, where they act as a Roper positive let off. They differ in the amount of overdrive and undergearing ratio they possess. The overdrive ratio varies from fifteen percent to forty percent. In contrast, the undergearing ratio ranges from 0.87:1 to 69%.
The TV7-117S turboprop engine gearbox is the first known application of epicyclic gears with asymmetric teeth. This gearbox was developed by the CZPT Corporation for the Ilyushin Il-114 turboprop plane. The TV7-117S's gearbox arrangement consists of a first planetary-differential stage with three planet gears and a second solar-type coaxial stage with five planet gears. This arrangement gives epicyclic gears the highest power density.
Planetary gearing is more robust and power-dense than other types of gearing. They can withstand higher torques, reductions, and overhung loads. Their unique self-aligning properties also make them highly versatile in rugged applications. It is also more compact and lightweight. In addition to this, epicyclic gears are easier to manufacture than planetary gears. And as a bonus, they are much less expensive.

They are smaller

Epicyclic gears are small mechanical devices that have a central "sun" gear and one or more outer intermediate gears. These gears are held in a carrier or ring gear and have multiple mesh considerations. The system can be sized and speeded by dividing the required ratio by the number of teeth per gear. This process is known as gearing and is used in many types of gearing systems.
Planetary gears are also known as epicyclic gearing. They have input and output shafts that are coaxially arranged. Each planet contains a gear wheel that meshes with the sun gear. These gears are small and easy to manufacture. Another advantage of epicyclic gears is their robust design. They are easily converted into different ratios. They are also highly efficient. In addition, planetary gear trains can be designed to operate in multiple directions.
Another advantage of epicyclic gearing is their reduced size. They are often used for small-scale applications. The lower cost is associated with the reduced manufacturing time. Epicyclic gears should not be made on N/C milling machines. The epicyclic carrier should be cast and tooled on a single-purpose machine, which has several cutters cutting through material. The epicyclic carrier is smaller than the epicyclic gear.
Epicyclic gearing systems consist of three basic components: an input, an output, and a stationary component. The number of teeth in each gear determines the ratio of input rotation to output rotation. Typically, these gear sets are made of three separate pieces: the input gear, the output gear, and the stationary component. Depending on the size of the input and output gear, the ratio between the two components is greater than half.
Gear

They have higher gear ratios

The differences between epicyclic gears and regular, non-epicyclic gears are significant for many different applications. In particular, epicyclic gears have higher gear ratios. The reason behind this is that epicyclic gears require multiple mesh considerations. The epicyclic gears are designed to calculate the number of load application cycles per unit time. The sun gear, for example, is +1300 RPM. The planet gear, on the other hand, is +1700 RPM. The ring gear is also +1400 RPM, as determined by the number of teeth in each gear.
Torque is the twisting force of a gear, and the bigger the gear, the higher the torque. However, since the torque is also proportional to the size of the gear, bigger radii result in lower torque. In addition, smaller radii do not move cars faster, so the higher gear ratios do not move at highway speeds. The tradeoff between speed and torque is the gear ratio.
Planetary gears use multiple mechanisms to increase the gear ratio. Those using epicyclic gears have multiple gear sets, including a sun, a ring, and two planets. Moreover, the planetary gears are based on helical, bevel, and spur gears. In general, the higher gear ratios of epicyclic gears are superior to those of planetary gears.
Another example of planetary gears is the compound planet. This gear design has two different-sized gears on either end of a common casting. The large end engages the sun while the smaller end engages the annulus. The compound planets are sometimes necessary to achieve smaller steps in gear ratio. As with any gear, the correct alignment of planet pins is essential for proper operation. If the planets are not aligned properly, it may result in rough running or premature breakdown.