China Standard Best Pompous Double Pulley with Bearings with Best Sales

Product Description

1.; Used for:; UPVC&Aluminum door & window.;
2.; Material:; Aluminum/Plastic/Steel
3.; Finish:; Galvanized/Natural.;
4.; Color for:; WZP/YZP/Natural
5.; Operate smoothly and good looking.;
6.; MOQ:; 1000pcs
7.; OEM is available.;

Quick Details
1.; Brand name:; AHQ
2.; Type:; For all kinds of Aluminum/UPVC door & window 
3.; Model Number:; W6102A-U
4.; Place of origin:; ZHangZhouG Province China
5.; Payment term:; 30% deposit by T/T before production,; 70% balance payment before delivery.;
6.; Port:;HangZhou/ZheJiang

Packaging & Deliver
1.; Packing:; Standard export package
2.; Delivery Detail:; 45 day after order deposit

About us
Our company established in 1996,; HangZhou Perfect Dragon Co.;,; Ltd.; Has been engaged in the line of Door and Window Hardware for nearly 20 years.; We focus on researching,; developing,; producing and always maintain strict management,; high quality.; Now we have become 1 of the most outstanding manufacturers in Aluminium & UPVC Accessories.;

Why choose us
1.;Professional experience:;Almost 20 years' expenience in non-standard bearings,; rollers,; pulleys,; and other plastic accessories for door and window.;
2.;Popular over the world:;Over 20 market countries.;
3.;Advantage:;Good quality with competitive price.;
4.;OEM offered:;Technical drawings,; samples or photos are needed

Q:; How to get a quotation and start business relationship with your company?
 A:; Please send us email and our sales representive will contact you as soon as we receive your email.;
Q:; How to receive a quotaion in the shortest time?
 A:; When you send us an enquiry,; please try to provide more details,; such as product size,; photo or drawing,; order quantity,; etc.; 
Q:; How to start an OEM project with your company?
 A:; Please send us your designed drawings or original samples so that we can offer a quotation first.; If all details are confirmed,; we will arrange sample production once received your deposit .;
Q:; What's your MOQ?
A:; The MOQ depends on the design and production processes of the products.; Nomally our company MOQ is 10000pc ,; but it can be much more or less depending on different product types.; Therefore,; we recommend you to tell us your required quantity first.;
Q:;How long can I receive an order?
A:; That depends on the specific items and your order quantity.; The lead time varies from 30 to 90 days.;

Design:; our company has a perfect design team,; they are to work together and provide a speediest and perfect solution according to your special requirements combined with favorable market conditions.;
Production:; Our company has a complete industrial-scale,; highly-skilled professional production team,; mature production technology,; high productivity and perfect quality control system to enable the consistency of production from stamping to resin molding ,;welding,; Assembly ,; surface treatment and so forth.;
Price:; Our company has a set of mothods concerning scientific management,; cost control ,; reasonable configuration,; we will provide you with the best possible price in the premise of the same materials,; the same process.;
Service:;Our company will work out each of our guest company the most personal service,; provide a service team to implement pre-sale,; sale,; then after-sales service and try our very best to complete utmost customer satisfaction.;

We are the member of China Construction Metal Structure Association.; We have professional technicial team,; quality supervision group,; advanced automation production equipments and testing machines,; strictly carry out ISO9001:; 2008 International Quality Control to ensure the excellent quality.;

We sincerely serve every customer.; Welcome customers from all over the world to establish good & long business relationship with us and benefit from our rich experience and resource.; You may rest assured that we will satisfy you by providing quality products,; competitive price,; timely delivery and good services.;


tem No. W6102A-U
Material STEEL
Colour  As required
Packaging Standard carton
MOQ 1000 pcs
Lead time Depends on quantity 
Company Type Manufacture
Groove Y / U / V
OEM offered Technical drawing or sample is needed
Export market Global
tem No. W6102A-U
Material STEEL
Colour  As required
Packaging Standard carton
MOQ 1000 pcs
Lead time Depends on quantity 
Company Type Manufacture
Groove Y / U / V
OEM offered Technical drawing or sample is needed
Export market Global

Types of Pulley Systems

If you've ever tried to lift a pail of water, you've probably seen the pulley system in action. Pulleys are extremely useful tools for everything from household appliances to heavy industrial machinery. Different kinds of pulley systems are classified according to their amount of motion. Some types have fixed axes, while others have movable axes. Some common uses of pulleys are listed below.

two-wheel pulley

Pulleys are complex structures with thin-walled and thick-walled sections. Therefore, they require specific forging designs. The tool concept for the production of pulleys is shown in Figure 11.6. Using the generated tool, the pulley can be forged into different shapes. Process parameters must be optimized based on material, surface quality and metallographic analysis.
Pulleys are wheels mounted on shafts. Its main function is to assist the movement of heavy objects. A single-wheel pulley can change the direction of the force, enabling a person to pull heavy objects. A dual-wheel pulley distributes the weight evenly across both wheels, allowing it to lift the same weight with half the effort.
The mechanical advantage of a two-wheel pulley is that it reduces the force required by about half. A 100 kg object can be lifted with a force of 500 Newtons. The mechanical advantage of a pulley with two wheels is twice that of a single-wheel pulley. However, care should always be taken when using two-wheel pulleys.
Two-wheel pulleys can be fixed or movable. A single wheel pulley can only change direction when the load is placed on one side of the wheel. Two-wheel pulleys change direction when lifting a load, requiring half the force. Live wheels are better for heavier loads. The movable pulley can be adjusted with the load, and the load distribution is more uniform. Active pulleys can be used with single-rope or two-wheel pulleys.
A pulley system with two wheels is called a compound pulley. This type of pulley system has a complex design that reduces the force required to move the load. Two-wheel pulleys are common in industrial and construction environments. These pulleys require a lot of space to install and operate. Additionally, they require regular maintenance to avoid wear and tear.

composite pulley

Compound pulleys are used to increase lift. One fixed pulley is attached to the overhead while the other fixed pulley is attached to the load. This setup minimizes the force required to lift weights, allowing you to lift heavier weights. There are several different types of compound pulleys, each with their own strengths and weaknesses. Below are some examples of their application. Some of the most common are listed below.
Composite pulleys are usually made from two different types of wheels. The first one is fixed and secure. The second type, movable, is attached to something that moves. The third type, compound pulley, is a combination of a movable pulley and a fixed pulley. Below are three types of comparisons. The table below compares them and explains their advantages and disadvantages. Composite pulleys are the most versatile of the three.
The number of sheave segments that make up the composite sheave system increases the mechanical advantage of the system. Each segment adds one percent of the total weight, and the ideal mechanical advantage is two or more. So a compound pulley with four segments will lift three-quarters of the weight. This is because the force applied to the load is multiplied by four. The result is a better boost.
While composite pulleys have many uses, they are most commonly used on larger sailboats. These pulleys work by changing the direction of the control wire or by changing the mechanical force of the rope. They also make it easier to lift heavier objects. Composite pulleys are more expensive than simple pulleys, so consider your needs before buying. The advantages of composite pulleys outweigh the disadvantages.
A basic compound pulley is a device consisting of two wheels with fixed points. Ropes are looped around the wheels and are used to lift heavy objects. When you pull on the rope, the rope pulls the two wheels closer together. Serious injury could result if this equipment is installed incorrectly. Never exceed the lifting capacity of pulleys and other safety devices that may be attached. When using pulleys, be sure to follow the instructions on the mounting hardware to avoid accidents.

Fixed pulley

Moving pulleys and fixed pulleys are different types of mechanical devices. The movable pulley moves with the object it is used to lift. Because it attaches to the object it is used to lift, it is great for lifting heavy objects. These devices are used in construction cranes and multipurpose elevators. There are many different types of pulleys, and their uses vary widely. Below is a brief overview of these devices.
The simplest pulley set consists of a wheel that is mounted on the ceiling. A rope is attached at one end and a person pulls at the other end. The rope is strong enough to keep a person standing while lifting weights. It takes about 200 Newtons of force to lift a 20 kg weight. In contrast, a movable pulley requires a force of 1000N, which makes it easier to lift heavy objects.
Fixed pulleys are another common lifting device. They work by using ropes and slotted wheels attached to the object to be lifted. These devices are convenient to use because they are easy to set up. Moving the scroll wheel doesn't change direction, so it's easier to move objects without putting too much pressure on the back. Unlike a moving rope, a moving object will feel much lighter than its actual weight.
Fixed pulleys are widely used in construction and agriculture. Fixed pulleys can help lift supplies and equipment from scaffolding. These items are often heavy and difficult to lift directly. Fixed pulleys at the top of the scaffolding will allow people at the bottom to lift objects more easily. As a result, those at the bottom are less stressed and more productive. Fixed pulleys will save time and money compared to moving ropes.
Composite pulleys combine fixed and movable pulleys to increase the power of movement. A compound pulley system uses both types of pulleys and enables a person to change direction by reversing the direction of a force. The compound pulley system will save time and effort as the user only has to put in half the effort. Unlike moving ropes, composite pulleys are easy to adjust and are the most versatile system on the market.

Blocks and tackles

A pulley block system is a rope hoist that uses a set of pulleys mounted on a frame. The blocks are arranged in a row, and the threaded rope is called a pulley. Pulley systems help amplify the tension of the rope and are common in sailboats, cranes and drilling rigs. However, these systems are not without drawbacks.
The pulley pulley system can be equipped with as many pulleys as required. This method allows a person to lift heavy objects. The pulley block system can contain the required number of pulleys to achieve the desired height. The main disadvantage of pulley systems is that they create a lot of friction on the pulley shaft.
Pulley systems use two types of pulleys. A movable pulley is attached to the load, allowing it to move with the load. On the other hand, fixed pulleys are fixed on fixed points. Therefore, a pulley block system may consist of multiple pulleys mounted on a shaft. For example, the two pulleys attached to the shaft each have their own mechanical advantages.
Several types of tackle systems have been developed in recent centuries. The most basic is the gun mount, which uses two pulleys to lift the load. The mechanical advantage of such a system is two to three times the distance required by the rope to move the load. Depending on how they're assembled, the system can lift 400 pounds with 80 or 100 pounds of force.
Another type of pulley is a combination of multiple wheels. The wheels on pulleys are supported by a housing or frame. The chain is attached to the pulley, and the rope is pulled to lift it. A combined pulley system will have multiple wheels. As the load increases, the force on the pulley also increases. This approach is generally more expensive than intercept and intercept systems.