China factory 20ton Manual Pulley Vital Types of Lever Chain Block for Lifting Equipment pulley belt

Product Description

Heavy duty 0.25 ton-20ton Chain block & lever hoist
2.Standard height:1-3m 
3.Have certificate of CE
4. One year gurantee. 

HSZ-A(B)& HS & HSH-VT Type chain block& Lever block:

*Capacity from 0.25T to 20T.
*Bearings inside load chain sprocket increase mechanical efficiency
*Chain guides provide smooth chain operation.
*lightweight steel construction with durable powder coat finish.
*Drop forged hooks and hook holders, heat treated to ensure the safety and durability.
*Gear assembly provide smooth operation by little hand efforts.
*T80 grade high tensile lifting chain make more effective.
Chain Block & Lever Block technical parameter: 

Model HSZ-0.5 HSZ-1.0 HSZ-1.5 HSZ-2.0 HSZ -3.0 HSZ-5.0 HSZ-10.0 HSZ-20.0
Capacity (TON) 0.5T 1T 1.5T 2T 3T 5T 3T 3T
Standard Lifting Height(M) 3 3 2.5 3 3 3 3 3
Running test load (KN) 6.3 12.5 18.8 25 37.5 62.5 125 250
Effort required to lift max. load (N) 231 309 320 360 340 414 414 828
No. of chain strand 1 1 1 1 2 2 4 8
Load Chain Dia.(MM) 6 6 8 8 8 10 10 10
Net.weight(KG) 9 11 17 18 24 41 72 164
Dimensions   (MM) A 131 140 161 161 161 186 207 215
B 127 158 174 187 199 253 398 650
C 270 317 399 414 465 636 798 890

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Our After-sale Services-- within 24 Hours:
(1)....Before--Sale Service :
01..Quality Control: Strictly Production Request base on signed contract ;
02..Delivery Time: Guarantee within contracted delivery time ;
03..Photos: Send photos to our customer after finish production and packing ;
04..Packing Details:Give complete packing size table to our customer;
05..Brand: Respect our customers' advice to use our customers' own brand & logo ;
06..Documents:Provide high efficiency service to post you all required customs clearance documents by DHL or TNT .  

(2)....After--Sale Service :  
01..Reply : Fast reply all your questions on line or by email or by telephone ;
02..Quality Problems:Our factory is responsible for any problems if it is resulted by our reasons (Such as give you free new parts to repair it  or give enough some compensation cost to you) ;
03..Safe Operating: Pls remind your customers to respect our Operating Manual to operate our machine rightly, to guarantee Safe when operate our machine. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Application: Double Beam Crane, Gantry Crane, Bridge Crane, Tower Crane, Single Grinder Crane, Lifting Platform, Small Crane
Type: Chain Hoist
Sling Type: Chain
US$ 1/Piece
1 Piece(Min.Order)


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Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

chain pulley

How do chain pulleys enhance the precision and control of lifting operations?

Chain pulleys play a significant role in enhancing the precision and control of lifting operations. Here are some ways in which chain pulleys contribute to precise and controlled lifting:

1. Mechanical Advantage:

Chain pulleys utilize a system of sheaves and chains, which creates a mechanical advantage. This allows operators to exert less force while lifting heavy loads. The mechanical advantage provided by chain pulleys enables smoother and more controlled lifting motions, reducing the risk of sudden movements that can compromise precision.

2. Multiple Sheaves:

Chain pulleys often feature multiple sheaves or wheels that guide the chain and distribute the load. By using multiple sheaves, the load can be evenly distributed, minimizing the possibility of imbalance or tilting during the lifting process. This promotes stability and control.

3. Variable Speed Options:

Some chain pulley systems offer variable speed options, allowing operators to adjust the lifting speed according to the specific requirements of the task. This feature enhances control by enabling operators to lift and position loads at a desired pace, ensuring accurate and precise placement.

4. Load Positioning:

Chain pulleys provide the ability to vertically lift loads and position them with accuracy. The pulley system allows for controlled vertical movement, enabling operators to raise or lower loads to precise heights. This is particularly useful in applications where precise positioning is necessary, such as assembly lines or construction sites.

5. Control Mechanisms:

Chain pulleys can incorporate control mechanisms to further enhance precision and control. These mechanisms may include braking systems or clutches that allow operators to stop or control the speed of lifting operations with greater accuracy. Such control mechanisms enable operators to perform delicate maneuvers and adjust the lifting process as needed.

6. Fine Adjustments:

Chain pulleys provide the capability for fine adjustments during lifting operations. By using the appropriate control mechanisms or manual adjustments, operators can make precise changes in the lifting height or position of the load. This level of fine-tuning ensures that the load is precisely placed or aligned, meeting the required specifications.

7. Operator Input:

Chain pulleys rely on manual operation, which allows the operator to have direct control over the lifting process. Operators can closely monitor the load, respond to any unexpected changes, and make real-time adjustments to maintain precision and control throughout the operation.

Overall, chain pulleys enhance precision and control in lifting operations through their mechanical advantage, multiple sheaves, variable speed options, load positioning capabilities, control mechanisms, fine adjustments, and operator input. These features make chain pulleys versatile tools for achieving accurate and controlled lifting in various industries and applications.

chain pulley

What role do chain pulleys play in providing mechanical advantage for lifting?

Chain pulleys play a crucial role in providing mechanical advantage for lifting tasks. They utilize a system of pulleys and chains to amplify the force applied by the operator, making it easier to lift heavy loads. Here's how chain pulleys provide mechanical advantage:

1. Pulley System:

A chain pulley consists of one or more pulleys mounted on a frame or housing. These pulleys have grooved rims that guide the chains as they loop around them. The pulley system creates a pathway for the chains to move and change direction, enabling the transfer of force.

2. Multiple Sheaves:

Chain pulleys often feature multiple sheaves, which are wheels with grooved rims. The chains pass over these sheaves, creating multiple points of contact. Each sheave adds an additional change in direction for the chains, increasing the mechanical advantage.

3. Force Distribution:

As the operator pulls the chain, the force applied is distributed across the multiple sheaves. The load weight is divided among the chains, and the force required to lift the load is divided among the multiple points of contact with the sheaves. This distribution of force reduces the amount of force needed by the operator to lift the load.

4. Force Amplification:

The force distribution and multiple sheaves result in force amplification. Each change in direction at a sheave increases the mechanical advantage of the system. The mechanical advantage is calculated by dividing the load weight by the force applied by the operator. With more sheaves, the mechanical advantage increases, allowing for the lifting of heavier loads with less effort.

5. Effort Reduction:

By providing mechanical advantage, chain pulleys significantly reduce the effort required to lift heavy loads. The force applied by the operator is amplified by the pulley system, allowing for efficient lifting with less physical exertion. This makes chain pulleys ideal for tasks that involve moving heavy objects or materials.

6. Increased Control:

In addition to mechanical advantage, chain pulleys offer increased control over the lifting process. The operator can regulate the lifting speed and adjust the position of the load with precision. This control allows for accurate placement of the load and minimizes the risk of sudden movements or accidents.

Overall, chain pulleys play a fundamental role in providing mechanical advantage for lifting tasks. Through their pulley system and the distribution of force, they enable the operator to lift heavy loads with reduced effort, increased control, and improved efficiency.

chain pulley

Can you explain the key components and design features of a chain pulley?

A chain pulley, also known as a chain block or a chain hoist, consists of several key components and design features that enable its lifting and hoisting functionality. Here's an explanation of these components and features:

1. Load Chain:

The load chain is a critical component of a chain pulley. It is made of high-strength alloy steel and provides the primary lifting mechanism. The load chain is designed to withstand heavy loads and is guided through the pulleys to lift the load.

2. Pulleys:

A chain pulley includes a set of pulleys, including a lifting pulley and a load pulley. The lifting pulley is connected to the lifting mechanism and is responsible for raising and lowering the load. The load pulley supports the load and guides the load chain during lifting operations.

3. Lifting Mechanism:

The lifting mechanism is the means by which the load chain is pulled to raise or lower the load. It can be operated manually using a hand chain or lever, or powered by an electric motor for more efficient and heavy-duty lifting. The lifting mechanism provides control over the speed and direction of the lifting operation.

4. Hooks:

Chain pulleys are equipped with hooks for securely attaching the load. The hooks are designed to withstand the weight of the load and provide a safe connection point. They are typically equipped with safety latches or clasps to prevent accidental detachment of the load.

5. Mechanical Advantage:

One of the key design features of a chain pulley is its ability to provide mechanical advantage. The arrangement of multiple pulleys in the chain pulley system increases the force applied to the load chain, allowing for efficient lifting of heavy loads with less effort. This mechanical advantage reduces the amount of force required by the operator.

6. Compact and Portable Design:

Chain pulleys are designed to be compact and portable, making them suitable for various lifting applications. They are often lightweight and easy to install, enabling their use in both indoor and outdoor environments.

7. Safety Features:

Chain pulleys are equipped with several safety features to ensure safe lifting operations. These may include load limiters to prevent overloading, safety hooks with latches to securely attach the load, and brake systems to control the movement and prevent accidental lowering of the load. These safety features help protect both the operator and the load.

8. Maintenance and Inspection:

To ensure safe and reliable operation, regular maintenance and inspection of chain pulleys are necessary. This may involve lubricating the load chain, inspecting hooks and safety features for any signs of wear or damage, and performing periodic load testing. Following the manufacturer's guidelines for maintenance and inspection is essential.

These key components and design features of a chain pulley work together to provide a reliable and efficient lifting and hoisting solution for a wide range of applications in industries such as construction, manufacturing, and warehousing.

China factory 20ton Manual Pulley Vital Types of Lever Chain Block for Lifting Equipment   pulley belt	China factory 20ton Manual Pulley Vital Types of Lever Chain Block for Lifting Equipment   pulley belt
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