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ABOUT US:

As your 1-quit source, AT PRECAST,we design and style, producer and distribute precast concrete components including the Lifting Techniques and Anchoring techniques Coil and Ferrule Inserts. for Concrete and Prefabricated region.

As a leader in creating concrete accessory items, our major goal is to make items that are safer, faster and more expense successful.

With a lot more than entirely fifty a long time working experience, our entire personnel is dedicated to offer you with the very best client provider and competitive rates. Our product sales force are CZPT to solution your concerns rapidly and offer you you technical help .

Assurance:

100% quality manufacturing.
 We guarantee that our products meet your supplied specifications
 Extremely competitive pricing
 Delivery to your port or front door
 4 —- 8 week lead times
 We handle all paperwork
 Partial container orders
 Flexible payment options
 Unique tooling options
 Full range of packaging options from bulk to retail ready
 Complete testing services available
 
FAQs:

1. Exactly where is your location?

We are located in HangZhou City of China and are shut to Airport. It takes 30minuts by auto from Liuting Airport our organization.

2. How long has the company been proven?

AT Market was established in 2009. There is 6 many years exporting experiences.

three. How several staff do you have?

Administration / sales    4
Engineering / design as our partner     8
Production as our companions 120
High quality assurance / inspection   10

four. Which international locations do you export to?

U.S.A, Germany, France, Italy, British isles, Brazil, Middle east of Asia, Thailand,

5. What proportion of your goods are exported?

100% of our production are exported to all over the planet.

six. How long does it just take to get samples?

a) Sample:30-45days soon after order 
b) Sample:30days right after sample finishing.
c) The lead time is the common manufacturing time period and does not contain the transportation time.

seven. New merchandise development method

Obtained tooling get and sample get with 50% deposit—Hold a assembly with the relation dept. to make sure the creating routine—Style pattern, fixture and gauge and generating them in our house—mould steel getting—Machining—Inspection—Send out out the sample with first inspection report.

8. How long is the producing direct time?

Mass Production: 90days following sample acceptance by yours.
The guide time is the basic manufacturing period including the transportation time.
We could make some unique creation arrangement effectively if client has urgent require.

nine. What basis can we get merchandise?

We generally offer you consumers charges FOB& CIF (Carriage, Insurance policies & Freight). The CIF consists of the freight price to your nominated sea port.
We do provide clearance of items which requirements to be handled by a regional freight forwarder.
All local charges and taxes are the obligation of the customer. We are satisfied to supply advisement on shipping and delivery if needed.

ten. What are the payment terms?

Payment conditions are negotiable and will boost for extended term customers.
Throughout the initial phases, we request 50% of tooling fee in progress with the stability payable on acceptance of samples.
Creation orders can be negotiable. We desire 50% deposit and the stability by T/T before sails. But often T/T thirty days following sails would also suitable.

11. Which currency can we acquire in?

We can deal in USD / Euro forex / GBP.

twelve. How long does it get to ship products from China by sea?

It takes about 5 weeks to European ports additionally 1 week customs clearance, so you can get the container inside 6 to 7 weeks. It takes about 2 months to east coast and 3 months to west coast US ports. All sea products are delivered from HangZhou Port.

13. How long does it take to ship goods from China by air?

It will take about 7 days to all significant locations.

14. Can we visit the manufacturing unit to perform an audit?

Indeed, you are welcome to check out our companion factory by prior agreement.

fifteen. How do we retain customer confidentiality?

We are pleased to signal Confidentiality Agreements with buyers and will honor them.

sixteen. Which languages do we do organization in?

Despite the fact that we do company with several nations around the world around the world, we can only converse successfully in Chinese English.
All details supplied must for that reason be supplied in this type.

17. Is there a least quantity of business needed to perform global getting?

There are no least volumes, but the prices of the items, additionally the mounted expenses of importing helps make it much more cost-effective to acquire in substantial volumes. All prospective clients will be assessed on an personal foundation to figure out if it seems a feasible choice for all functions to build a relationship.

eighteen. What type of components you are specialized in?

Our company consists of 2 places,
one is for construction precast such as lifting method, rigging hardware metal components.
 
An additional is personalized steel organization of quality sand castings, investment castings, lost foam castings, hot forgings, cold forgings, stampings, machined parts, injectionmolded plastics parts, etc.

19. Which type of equipments do you have?

Forging friction push 160Ton, 300Ton, 630Ton, 1200Ton
Casting CZPT of 200kg, 500kg,1000kgs, 2000kgs
Press of 63ton, 120tons
CNC Machining centre
CNC Vertical Lathe
CNC Lathe centre
Unexciting device
Drilling equipment
 

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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.

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.

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.

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.

editor by czh 2023-01-21