China Best Sales Forging Crane Winch Pulley Block Single Sheave Snatch Block with Free Design Custom

Product Description

Forging Crane Winch Pulley Block Single Sheave Snatch Block


Material:Carbon  Steel

Surface:Zinc Plated,Hot Dip Galvanized,Painted Coating 

Process: Punching and CNC


Customized requirements are welcome!

Origin: China
FOB Port: HangZhou
Lead time: 15~45 Days
Main export market: US, Australia, European countries, India or others
Standard: CE, ISO

Packing: Carton, Pallet

Pulley Specification

Model  Capacity Test Load  Wire rope Diameter(mm)  Sheave Diameter  Weight
t     kn Apply  Max mm kg
Single sheave  pulley block TW(L)KI-0.5 0.5 8 6.2 7.7 71 1.75
TW(L)KI-1 1 16 7.7 11 85 3.25
TW(L)KI-2 2 32 11 14 112 6
TW(L)KI-3.2 3.2 51.2 12.5 15.5 132 10.5
TW(L)KI-5 5 80 15.5 18.5 160 19
TW(L)KI-8 8 128 20 23 210 35.2
TW(L)KI-10 10 160 23 24.5 240 50.5
TW(L)KI-16 16 224 28 31 315 113.5
TW(L)KI-20 20 280 31 35 355 162.2
Two sheave pulley block HQG(L)2-1 1 16 6.2 7.7 71 3.15
TW(L)2-2 2 32 7.7 11 85 6
TW(L)2-3.2 3.2 51.2 11 14 112 11
HQG(L)2-5 5 80 12.5 15.5 132 20
TW(L)2-8 8 128 15.5 18.5 160 35
TW(L)2-10 10 160 17 20 180 47
HQG(L)2-16 16 224 23 24.5 240 75.2
TW(L)2-20 20 280 26 28 280 138.9
TW(L)2-32 32 448 31 35 355 237.5
Three sheave pulley block
TW(L)3-3.2 3.2 51.2 7.7 11 85 8.2
TW(L)3-5 5 80 11 14 112 16.83
TW(L)3-8 8 128 12.5 15.5 132 18
TW(L)3-10 10 160 15.5 18.5 160 47
TW(L)3-16 16 224 17 20 190 49.79
TW(L)3-20 20 280 20 23 210 69.59
TW3-32 32 448 26 28 280 187.8
TW3-50 50 700 31 35 355 360
four-sheave pulley block
TW4-8 8 128 11 14 112 29.36
TW4-10 10 160 12.5 15.5 132 41.46
TW4-16 16 224 15.5 18.5 160 76.23
TW4-20 20 280 17 20 180 84
TW4-32 32 448 23 24.5 240 196.23
TW4-50 50 700 28 31 315 347.9
5-sheave pulley block
TW5-20 20 280 15.5 18.5 160 91.5
TW5-32 32 448 20 23 280 303
TW5-50 50 700 23 24.5 240 277.5
TW5-80 80 1040 31 35 355 516.5
6-sheave pulley block
TW6-32 32 448 17 20 180 122.73
TW6-50 50 700 23 24.5 240 277.5
TW6-80 80 1040 28 31 315 507.3
TW6-100 100 1300 31 35 355 691.3
8-sheave pulley block
TW8-80 80 1040 26 28 280 530
TW8-100 100 1300 28 31 315 653.5
TW8-160 160 2080 31 35 355 1137.4
TW8-200 200 2500 34 38 400 1360
10-sheave pulley block TW10-200 200 2500 31 35 355 1552


HangZhouThinkwell is an ISO9001:2008 Certifited factory,we also manufacture hooks, shackles, turnbuckles, wire rope clips, Load binders and other rigging hardware accessories.

     Qngdao CZPT Hardware & Machinery CO., Ltdis the manufacturer which deals with the foreign trade and domestic trade with the Forging, Stamping, Heat treatment, Die and Machinery for various Rigging accessorie, Power accessories, Mining machinery accessories and other products. Our company research, design, production and sales. After-sales service as a whole, and has 10 years of rigging and other aspects of the design, manufacture and after-sales service experience.


Are you a factory or a trading company?

1.  We are a factory  focused on the rigging hardware, auto parts, forged parts over 10 years.
2.  Our products are shackles, turnbuckles, hooks, chains, load binders, bolts&nuts, wire rope clips, thimbles, connecting rods etc.
3. We own advanced equirpments and 2 production lines like 1000t, 630t, 400t , 300t, 160t forged presing machine, purch, thread rolling machine, tapping and milling machine.

What is your Quanlity Guarantee?

1. We are an ISO9001:2008 certified factory.
2. All of the products was qualifled before shipping.
3. The third party product inspections are acceptable.

How can I get a smple to check your quality?

Required Samples will be sent after price confimation. If place order, freight will be returned back.

Why I choose you?

1. Rich expenience on rigging hardware over 10 yuears.
2. Delivery time is 15-45 days.
3. ISO, SGS Certification.
4. Over 100 staff, inducting 3 engineers, 10 speciaized technican.

Please contact us with the following information:

Mob :
ADD: No 88. Chunyang Road,CHangZhou District,HangZhou,ZheJiang ,China


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 Best Sales Forging Crane Winch Pulley Block Single Sheave Snatch Block     with Free Design CustomChina Best Sales Forging Crane Winch Pulley Block Single Sheave Snatch Block     with Free Design Custom