China Good quality New Design Double Pulley with Bearings with Hot selling

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:; W6003A-Y
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

tem No.; W6003A-Y
Material STEEL
Colour  As required
Packaging Standard carton
MOQ 1000 pcs
Lead time Depends on quantity 
FOB Port HangZhou
Company Type Manufacture
Groove Y / U / V
OEM offered Technical drawing or sample is needed
Export market Global

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.;


The Mechanical Advantage of a Pulley

A pulley is an important tool for many tasks. The advantage that it offers over a hand-held mechanism is its mechanical advantage. In this article, we'll discuss the types of pulleys and their applications. We'll also look at the types of compound pulleys. And, of course, there's a little bit about the mechanical advantage of a pulley. This article will help you decide whether this tool is right for your needs.

Mechanical advantage of a pulley

A pulley has a mechanical advantage over a lever because it is able to produce more force over longer distances. The mechanical advantage of a pulley sounds brilliant and could produce energy. But what exactly is this mechanical advantage? Let's take a look. First, consider how a pulley works. A rope supports a 100kg mass, which requires 500 newtons of force to lift. If the rope supports a 100kg mass, 2 sections of rope can support that load. Using a pulley, you can lift the same weight with half the force.
A pulley's ideal mechanical advantage is the ratio of the force applied to the total length of the rope. The larger the radius, the greater the mechanical advantage. A pulley made up of 4 rope segments has an ideal mechanical advantage of four. Therefore, a four-segment pulley would multiply the force applied by four. As the numbers on the rope segments are smaller than the total length of the rope, it would be better to use a compound pulley.
The mechanical advantage of a pulley can be calculated by using the T-method. The first step in calculating the mechanical advantage of a pulley is defining the force you need to lift. Then, divide that force by 2 to calculate the amount of force you need to lift the load. Once you know this amount, you can design a pulley to meet your needs. That way, you can achieve the perfect balance between the 2 types of pulleys.

Types of pulleys

The main function of the pulley is to change the direction of the force. The mechanical advantages of a single pulley are two. Ideally, 2 pulleys should have 2 or more mechanical advantages. The mechanical advantage of compound pulleys can be increased to 2 or more. The number of pulleys that make up the composite pulley will determine the mechanical advantage. Certain types of pulleys are combined in 1 housing.
A stepped pulley is a set of pulleys with stepped surfaces. Each face is anchored to the mid-axis in an ordered sequence. This design gives these pulleys their name. They are used to increase and decrease the speed of the driven pulley. Step pulleys are usually used in pairs. They can be straight or stepped, but usually come in pairs.
The 3 main types of pulleys are pulleys, rope pulleys, and chain pulleys. Pulley Pulley systems use mechanics to lift and lower heavy objects. The Greek historian Plutarch credits the invention of the pulley to Archimedes of ancient Sicily. The Mesopotamians used rope pulleys to lift water around 1500 BC, and Stonehenge is said to have been built using a rope pulley system.

Application of pulley system

The advantages of using a pulley system are numerous. The ability to lift heavy objects is a good example. The pulley system makes it easy for people to lift blocks and other large objects. It can be used in many different applications, from utility elevators to construction cranes. In addition, it is widely used on sailing boats. If you want to learn more about the benefits of a pulley system, keep reading!
You can use the pulley system to water flowers or water plants. Some of them even lowered the pot to make cleaning easier. Pendant lights are another great place to install a pulley system. Climbing and fishing are just some of the activities that utilize the pulley. They are great for fishing and gardening. And since they are so versatile, you can use the pulley system anywhere.
To get the most out of your pulley system, you must choose a product that has all of the above attributes. A high-quality pulley must have a large pulley diameter and be made of sturdy materials. The cables must also be properly supported in the pulleys to ensure a long service life for your investment. A good cable should have minimal cracks and be lubricated. These factors are the most important considerations when choosing a pulley system for your needs.

composite pulley

Composite pulley systems combine 2 or more movable pulleys. These systems maximize the force to move the weight and can also change direction so they can be used to lift weights. Composite pulley systems can be as simple or as complex as your needs. For example, a pulley pulley system uses multiple pulleys on each axis. This method is often used for hoisting building materials.
A compound pulley system has 2 or more rope segments, each of which is pulled up on a load. It can increase lift by making objects move faster. These systems are common on large sailboats and construction sites. Composite pulleys are also available for larger boats. Due to their versatility, they are versatile tools for construction sites and large sailboats. If you have their app, you should consider buying one.
The main advantage of composite pulleys is their versatility. You can use them to lift weights or use them to save energy. Composite pulleys are especially useful for lifting heavy objects. For example, you can tie a paper clip to the end of the rope and pull it up. The flag is then lifted into the air with the help of compound pulleys. Composite pulleys are a great invention and they are often used in construction.

security considerations

There are several safety considerations to consider when using pulleys. The first is Secure Workload (SWL). This value is a general guideline for the maximum weight a pulley can safely handle. It varies according to the height and angle of the pulley. Besides SWL, there are some other factors to consider. Consider each 1 before deciding on the pulley that best suits your needs.
Another safety consideration is the weight of the load. Since the highs of the pulley are higher than the lows, it doubles in weight. The weight of the high point should not exceed 4 kN. The safety factor is calculated by multiplying the strength of the pulley by the weight of the load. Secondary COD has a safety factor of 10:1 and bulletproof primary anchors should be used with pulleys.
If using a chain hoist, you must be trained in the appropriate type of lifting. It is important not to hang on the top hooks of the structure, nor to overload or rig the hooks with multiple slings. You should also avoid corroded or damaged chains, as they can cause the crane to jam or overload. A worn chain can even cause the load to drop.

Components of a pulley system

Proper design of the pulley system can increase the life of the cables and pulleys. Larger diameter cables should be selected as they are more durable than smaller diameter cables. The cables should also be supported in the pulley grooves. The pulley must be designed to be compatible with the cable and its lubrication should be optimal. Proper lubrication of cables and pulleys will ensure maximum durability and longevity.
The first type of pulley is called a fast pulley. These pulleys are used for quick start and stop of the machine. These pulleys are usually mounted in pairs on the countershaft of the machine. One pulley is tightly mounted on the machine shaft, while the other pulley is fitted with a free-spinning mechanism. When the machine is running, the belt is mounted on the tensioner pulley, and when it is stopped, the belt slides on the independent pulley.
Composite pulley sets reduce the overall effort required by reducing the size of the pulley. These are usually attributed to Archimedes. Flat pulleys are often used in flat belt driven transmission systems. These are used in high-speed, low-power applications. Flat pulley idlers are also used on the back of traditional V-belts.

China Good quality New Design Double Pulley with Bearings   with Hot sellingChina Good quality New Design Double Pulley with Bearings   with Hot selling