China Standard Screed Pulley for Cable pulley drive

Product Description

Material: Alloy,Cast Iron,Steel
Finish: Customized
Packing: Gunny bag or carton and pallet / by customer requirements.
Application: Simple screed pulleys in the DD range are dismissal pulleys
intended for slow uses. It allows lifting or deviation
rope without limit of height or distance.
They can be stowed to a fixed or mobile point presenting the
resistance necessary for applicable force.
The pulleys are equipped with an swivel hook which guarantees a good
Orientation of the pulley compared to the rope.

WLL(kg) øDiam of Rope  L H E Weight(kg)
150  12-14 60 140 45 0.7
250  16-18 80 185 50 0.8
500  20-22 95 200 58 1

 

HangZhou Xinquanxi Metal Products Co.,Ltd. is a professional  forging and casting parts manufacturer with more than 20 years experience with good quality and competitive price.
We are so willing to avail ourselves of opportunity establishing business relation with you.
Our main products are Rigging: turnbuckle (Jis open body, 1480 forging turnbuckle, US type  forging turnbuckle,Rigging Screw),  forging shackle, eye bolt and eye nut, forged hookand special customized products,,  various sets of rings, D ring, master ring, snap hook,Pulley Block, etc.;  
Corner code, expansion bolt, seismic support, guardrail and other building materials.  
Casting pipes, manhole covers, road piles, container buttons, anchors, all kinds of breeding equipment and other casting products. 

FAQ
1.Are you a factory or a trading company?   
      We have our own foundry and forging factory. The forging plant has 4 production lines and a history of more than 20 years;Foundry has a history of more than 30 years.
2.How do you control your quality?   
      1: Control during r&d at the beginning of production
      2:Production process control
      3:Dimensional control
      4:Tensile tests
      5:Quality inspection before delivery
3.Can we have our product markings on it?
   Yes, we can add product markings according to your requirements.
4.How about packing?
   Woven bag,carton,plywood pallet or by customer requirements.

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Certification: CE, ISO
Manufacturing Process: Forging
Material: Steel
Samples:
US$ 0.2/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

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

cable pulley

How are cable pulleys used in the operation of cranes and hoists?

Cable pulleys play a crucial role in the operation of cranes and hoists. They are an integral part of the lifting mechanism, providing support, guidance, and control for the cables used in these systems. Cable pulleys contribute to the efficient and safe operation of cranes and hoists. Here is a detailed explanation of how cable pulleys are used in the operation of cranes and hoists:

  • Lifting Mechanism: Cranes and hoists utilize cable and pulley systems to lift and move heavy loads. The cables are attached to the load and are routed through a series of pulleys. The pulleys are strategically positioned to guide the cables along the desired path. As the cables move, the load is lifted or lowered accordingly. The cable pulleys ensure that the cables are properly aligned and prevent them from tangling or coming off the pulleys. This enables controlled and precise lifting and lowering of loads.
  • Load Distribution: Cable pulleys in cranes and hoists help distribute the load weight evenly across the cables. The load is typically attached to multiple cables, and the pulleys ensure that each cable carries its fair share of the weight. This even distribution of load prevents excessive stress on individual cables, reducing the risk of cable failure or system instability. The cable pulleys contribute to the overall balance and stability of the lifting operation.
  • Tension Control: Cable pulleys assist in controlling the tension in the lifting cables. Proper tension is crucial for safe and efficient lifting operations. The pulleys are designed to maintain the appropriate tension in the cables during the lifting and lowering processes. They help prevent slack or excessive tension in the cables, ensuring smooth and controlled movement of the load. The tension control provided by the cable pulleys enhances the safety and stability of the crane or hoist operation.
  • Directional Control: Cable pulleys enable directional control of the load movement in cranes and hoists. By guiding the cables along specific paths, the pulleys determine the direction of the load. The pulleys can be positioned in various configurations to achieve the desired movement, such as vertical lifting, horizontal shifting, or rotation. This directional control allows for precise positioning and placement of the load, enhancing the versatility and functionality of cranes and hoists.
  • Multiple Line Systems: In some cranes and hoists, multiple cables and pulleys are employed to increase lifting capacity or provide additional stability. These systems, known as multiple line systems, consist of several cables connected to the load and routed through corresponding pulleys. The cable pulleys guide and support the multiple lines, ensuring synchronized movement and load distribution. This arrangement enables the lifting of heavier loads while maintaining balance and control.
  • Maintenance and Safety: Regular maintenance of cable pulleys is essential for the safe and efficient operation of cranes and hoists. Inspections should be conducted to check for any signs of wear, damage, or misalignment. Lubrication should be applied to the pulleys as recommended by the manufacturer to ensure smooth operation and prevent corrosion. Proper tensioning of the cables should be maintained. Any issues with the cable pulleys or cables should be addressed promptly to avoid potential safety hazards.

In summary, cable pulleys are vital components in the operation of cranes and hoists. They contribute to the lifting mechanism, load distribution, tension control, directional control, and multiple line systems. Proper maintenance of the cable pulleys is essential for ensuring their optimal performance and safety in crane and hoist operations.

cable pulley

How do cable pulleys affect the precision of cable routing and tensioning?

Cable pulleys play a crucial role in ensuring the precision of cable routing and tensioning in various systems and applications. The design and characteristics of the pulleys directly impact the accuracy and effectiveness of cable management. Here is a detailed explanation of how cable pulleys affect the precision of cable routing and tensioning:

  • Cable Alignment: Cable pulleys help maintain proper cable alignment throughout the routing path. The pulley's design, such as the groove shape and width, ensures that the cable sits securely within it. Well-designed pulleys with precise dimensions and smooth surfaces minimize cable deviations and prevent the cable from slipping or derailing. Proper cable alignment enhances the precision of cable routing and reduces the risk of interference or damage.
  • Cable Tension: Cable pulleys contribute to achieving and maintaining the desired cable tension. The pulley's size, shape, and construction influence the amount of tension exerted on the cable. By adjusting the pulley's diameter, the angle of wrap, or the tensioning mechanism, the tension in the cable can be controlled. Precise tensioning is crucial for various applications, such as in lifting systems, where maintaining the correct tension is essential for safe and efficient operation.
  • Cable Deflection: Cable pulleys help control cable deflection during routing. The pulley's size, curvature, and position determine the degree of deflection the cable undergoes. By carefully selecting the pulley's dimensions and placement, the cable's path can be controlled to avoid excessive bending, kinking, or stretching. Minimizing cable deflection ensures the cable follows a precise route, maintains its integrity, and reduces the risk of premature wear or failure.
  • Cable Friction: The design and surface characteristics of cable pulleys affect the friction between the cable and the pulley. Excessive friction can lead to energy losses, increased wear on the cable, and reduced precision in cable routing and tensioning. Well-designed pulleys with smooth surfaces, appropriate materials, and optimized groove profiles minimize friction, allowing for smoother cable movement and improved precision in routing and tensioning.
  • Cable Wear: Cable pulleys can impact cable wear and longevity. Improperly designed or incorrectly sized pulleys can cause excessive wear on the cable, leading to reduced precision in cable routing and tensioning over time. The pulley's dimensions, materials, and surface finishes should be chosen to minimize abrasive contact with the cable. Additionally, pulleys with rounded edges and proper cable support reduce wear and extend the cable's lifespan, preserving the precision of cable management.
  • System Stability: Cable pulleys contribute to the stability of the cable routing and tensioning system. Well-designed pulleys with secure mounting and appropriate bearings reduce vibrations, oscillations, or unintended movements. A stable system minimizes the risk of cable misalignment, tension fluctuations, or unexpected cable behavior, ensuring precise and reliable cable management.
  • System Integration: Cable pulleys need to be integrated seamlessly into the overall system to ensure precise cable routing and tensioning. Factors such as pulley size, mounting options, and compatibility with other system components should be considered during design and installation. Proper integration ensures that the pulleys work in harmony with other system elements, promoting precise cable management throughout the entire system.

Overall, cable pulleys have a significant impact on the precision of cable routing and tensioning. Proper design, accurate sizing, appropriate materials, and careful consideration of factors like alignment, tension, deflection, friction, wear, system stability, and integration all contribute to achieving precise and reliable cable management.

cable pulley

Can you explain the types of cables commonly used with cable pulleys?

Various types of cables are commonly used with cable pulleys, depending on the specific application and requirements. The choice of cable depends on factors such as load capacity, flexibility, durability, and resistance to environmental conditions. Here are some of the types of cables frequently utilized with cable pulleys:

  • Wire Rope: Wire rope is a type of cable that consists of multiple strands of metal wires twisted together to form a helical structure. It is highly durable and offers excellent strength-to-weight ratio, making it suitable for heavy-duty applications. Wire rope is commonly used in lifting and rigging operations, such as cranes, hoists, and pulley systems that involve substantial loads.
  • Steel Cable: Steel cable is similar to wire rope but typically refers to single-strand cables made of high-strength steel wires. It is known for its exceptional strength and resistance to abrasion, making it suitable for demanding applications. Steel cables are commonly used in winches, towing systems, and industrial lifting equipment where high tensile strength and durability are essential.
  • Nylon Rope: Nylon rope is a synthetic fiber rope known for its high strength, flexibility, and resistance to moisture and chemicals. It is lightweight and easy to handle, making it popular in various applications. Nylon ropes are often used in recreational activities, general-purpose lifting, and pulley systems that require moderate load capacity and flexibility.
  • Polypropylene Rope: Polypropylene rope is a lightweight and low-cost synthetic rope that offers good resistance to water, chemicals, and UV rays. It is commonly used in applications where weight is a concern, such as camping, boating, and light-duty lifting operations. However, polypropylene ropes have a lower strength compared to other types of cables and are not suitable for heavy loads or high-tension applications.
  • Polyester Rope: Polyester rope is a synthetic rope known for its high strength, low stretch, and resistance to UV rays and moisture. It offers good abrasion resistance and durability, making it suitable for a wide range of applications. Polyester ropes are commonly used in marine environments, outdoor activities, and general-purpose lifting operations that require strength, flexibility, and longevity.
  • Aramid Fiber Rope: Aramid fiber ropes, such as those made from materials like Kevlar®, are known for their exceptional strength, heat resistance, and high modulus. They offer excellent resistance to chemicals, abrasion, and impact. Aramid fiber ropes are used in specialized applications, including high-performance lifting and rigging operations, aerospace, and military applications.

It's important to select the appropriate type of cable based on the specific requirements of the application, considering factors such as load capacity, flexibility, durability, and environmental conditions. Additionally, regular inspection and maintenance of the cables are crucial to ensure their safe and reliable performance when used with cable pulleys.

China Standard Screed Pulley for Cable   pulley driveChina Standard Screed Pulley for Cable   pulley drive
editor by CX