Product Description
Product Description
Zinc Alloy Die Cast Pulley Single/Double Wheel Rigid Eye with Steel wheel
Zinc Alloy Die Cast Pulley Single/Double Wheel Rigid Eye with Nylon wheel
Zinc Alloy Die Cast Pulley Single/Double Wheel Swivel Eye with Steel wheel
Zinc Alloy Die Cast Pulley Single/Double Wheel Swivel Eye with Nylon wheel
Technical Data and Dimensions
Zinc Alloy Die Cast Pulley Single Wheel with Nylon wheel
Size | Total Length | Eye Dia. | Weight Each |
(mm.) | (mm.) | (mm.) | (Kg.) |
15 | 49 | 10 | 0.571 |
20 | 59 | 11 | 0.036 |
25 | 70 | 12 | 0.052 |
30 | 76 | 13 | 0.077 |
40 | 90 | 16 | 0.110 |
50 | 110 | 17 | 0.175 |
65 | 133 | 18 | 0.360 |
Zinc Alloy Die Cast Pulley Double Wheel with Nylon wheel
Size | Total Length | Eye Dia. | Weight Each |
(mm.) | (mm.) | (mm.) | (Kg.) |
15 | 49 | 10 | 0.034 |
20 | 58 | 11 | 0.055 |
25 | 70 | 12 | 0.072 |
30 | 80 | 13 | 0.115 |
40 | 90 | 16 | 0.190 |
50 | 100 | 17 | 0.293 |
Zinc Alloy Die Cast Pulley Double Wheel with Steel wheel
Size (D) | Rope Dia. | Weight Each |
(in.) | (in.) | (Kg.) |
1/2 | 5/32 | 0.571 |
3/4 | 3/16 | 0.040 |
1 | 1/4 | 0.073 |
1-1/4 | 5/16 | 0.126 |
1-1/2 | 3/8 | 0.142 |
2 | 7/16 | 0.283 |
Zinc Alloy Die Cast Pulley Single Wheel with Steel wheel
Size (D) | Rope Dia. | Weight Each |
(in.) | (in.) | (Kg.) |
1/2 | 5/32 | 0.571 |
3/4 | 3/16 | 0.040 |
1 | 1/4 | 0.073 |
1-1/4 | 5/16 | 0.126 |
1-1/2 | 3/8 | 0.142 |
2 | 7/16 | 0.283 |
*Other main type of Blocks are in following picture. You can contact our sales for products details.
BUSINESS FAQ:
1) What is the MIN order quantity ?
USD 1580 in total value, usually 1 ton.
2)What is the delivery time?
15 -20 days since received the deposit.
3)What is the Payment term?
A. 30% TT deposit, the balance against copy B/L.
B. Irrevocable L/C at sight.
C. Other payment can be negotiated.
4)Could I get free samples before first cooperation?
Yes, of course! But the buyer need to afford express fee, which is returnable once we build cooperation.
5)What’s the packing method?
Packing methods for most of the products are in the cartons or polywood case.Special packages are available upon
customers’need. You can contact us for special or more detailed packages.
Why choose CHINAMFG (lift-sunny )
1). “ONE-STOP” Rigging and Marine supplier: a great variety of rigging and marine products including 1,000 kinds
of products, 3,000 kinds of specifications, which are widely used in Construction,Transportation, Forestry, Oil&Gas,
Agriculture, Utilities, Aerospace, Marine, Manufacturing, Mining, Fishing and Government.
2). Old history: since 1986, more than 30 years focus on rigging, marine and rubber products.
The founding principles of the company have never changed-business integrity,quality is everything.
3). Strong development capabilities: processing with Given materials and samples at own
module workshop, save cost, finish customers special and big order rapidly.
4). 4 round Superior Quality Control with 10 years records and zero complaint:
4 round quality inspection including raw materials, production, finished products, final package, have a thorough
quality control system, professional staff, every step is under strict inspection, to insure
that every product is perfect.For the individual and mass production part, the records which include the
sub-contractor records will be retained at least 10 years since the record has been made,
(e.g. inspection/test record, control plan, etc)
In the past years,the complaint rate of product quality from more than 50 countries customers is zero.
5). Certificate of Quality: ISO9001, CE, GS, CCS, ABS, BV, KR, REACH, etc. Photos as below.
6). Reasonable and Competitive price compared with others with same quality.
7). Fast Delivery time: within 20 days for most products.
8). Comfortable and topping after-sales service with 99.8% satisfaction rate for more than
50 countries and regions: We will send you “Customer Satisfaction Inventory” after you receive our first order.
If you are not satisfied with our quality,price or service, please list your comments or suggestions, the next day, our
senior manager will personally call you or email you, apologize to you, to solve your problem.Because day after day,
year after year of self-correction, our current customer satisfaction rate has reached 99.8%. we are very proud of this.
Of course, we still need to continue to work hard.Our main marketing as below picture.
9). Great Supports for marketing. With us, your money and business in safe.If you want to be
No.1 you should contact with us right now!
Type: | Rigid/Swivel Eye Pulley, Shackle Block, Hook Block |
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Material: | Zinc Alloy, Steel, Stainless Steel Available |
Number of sheaves: | 1 or 2 |
Control: | Manual |
Color: | Nickle or Zinc Plated |
Application: | Double Beam Crane, Gantry Crane, Bridge Crane, Tower Crane, Single Grinder Crane, Lifting Platform, Small Crane, Industrial, Rigging, Fasteners |
Customization: |
Available
| Customized Request |
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Can double pulleys be used in DIY projects and home improvement tasks?
Yes, double pulleys can be used in a wide range of DIY projects and home improvement tasks. They offer several benefits and can be a valuable tool in various applications. Here’s a detailed explanation:
1. Lifting and Moving Heavy Objects:
– Double pulleys can provide mechanical advantage, making them useful for lifting and moving heavy objects during DIY projects. Whether you need to hoist a heavy piece of furniture, lift a motor from a car, or transport construction materials, a double pulley configuration can reduce the effort required by distributing the load and providing a greater lifting capacity.
2. Creating a Zipline or Rope Course:
– If you’re looking to add some excitement to your backyard or create a fun activity for kids, double pulleys can be used to construct a zipline or rope course. By setting up a strong cable or rope between two points and attaching double pulleys, you can create a thrilling ride or challenging obstacle course. Double pulleys allow for smooth movement and can enhance the overall experience.
3. Garage Storage and Organization:
– Double pulleys can be utilized in garage storage and organization systems. By installing pulley systems with hooks or straps, you can hoist bicycles, ladders, or other bulky items up to the ceiling, freeing up valuable floor space. Double pulleys make it easier to lift and store heavy objects, providing a practical solution for maximizing storage efficiency in a limited space.
4. Hanging Plants or Bird Feeders:
– If you want to hang plants or bird feeders from tree branches or elevated structures, double pulleys can make the task easier. By attaching a double pulley system to a secure anchor point, you can lower and raise the plants or feeders for watering, maintenance, or filling. Double pulleys facilitate smooth vertical movement and allow for effortless access to hanging objects.
5. DIY Window Coverings:
– Double pulleys can be incorporated into DIY window covering systems for curtains or blinds. By attaching pulleys to the ceiling or wall, you can create a mechanism that allows for easy opening and closing of window treatments. Double pulleys provide a smooth and controlled movement, enhancing the functionality and convenience of homemade window coverings.
6. Repairing or Installing Lighting Fixtures:
– When working with lighting fixtures, such as chandeliers or pendant lights, double pulleys can assist in the installation and maintenance process. By attaching the fixture to a pulley system, you can easily raise or lower it for wiring, bulb replacement, or cleaning. Double pulleys simplify the task and enable precise adjustment of the fixture’s height.
7. DIY Clothesline:
– Double pulleys can be utilized to create a DIY clothesline for drying clothes outdoors. By setting up a strong rope or cable between two supports and incorporating double pulleys, you can easily hang and adjust the position of the clothesline. Double pulleys provide convenience in raising the clothesline higher for better air circulation or lowering it for easier access to the laundry.
These are just a few examples of how double pulleys can be used in DIY projects and home improvement tasks. Their versatility, mechanical advantage, and ability to provide controlled movement make them a valuable tool for various applications around the home. By considering the specific requirements of your project and ensuring proper installation and safety precautions, you can effectively incorporate double pulleys into your DIY endeavors.
How are double pulleys customized for specific load-bearing requirements?
Double pulleys can be customized to meet specific load-bearing requirements in various applications. Here is a detailed explanation of how double pulleys are customized for specific load-bearing requirements:
1. Material Selection:
– To customize double pulleys for specific load-bearing requirements, the selection of appropriate materials is crucial. Pulleys can be made from various materials such as steel, aluminum, brass, or high-strength polymers. The choice of material depends on factors such as the expected load capacity, environmental conditions, weight restrictions, and desired durability. For heavy-duty applications, pulleys made from robust materials with high load-bearing capacities are selected, while lightweight materials may be suitable for lighter loads or applications where weight is a concern.
2. Size and Diameter:
– The size and diameter of double pulleys are customized based on the specific load-bearing requirements. Larger pulleys tend to have higher load-bearing capacities due to their increased surface area and ability to accommodate thicker ropes or cables. Smaller pulleys, on the other hand, are suitable for lighter loads or applications where space constraints exist. The diameter of the pulley also affects the mechanical advantage and the force required to lift the load. By selecting the appropriate size and diameter, the pulleys can be optimized for the desired load-bearing capacity.
3. Bearing Type and Efficiency:
– Double pulleys can be customized by selecting the appropriate bearing type and efficiency. Bearings reduce friction between the pulley axle and its housing, allowing for smoother rotation and efficient load handling. Common bearing types used in pulleys include ball bearings, roller bearings, and plain bearings. The choice of bearing type depends on factors such as the expected load, rotational speed, and environmental conditions. Higher-quality bearings with better efficiency are often selected for heavy-load applications or situations where precise and smooth movement is required.
4. Pulley Configuration:
– The configuration of double pulleys can be customized to meet specific load-bearing requirements. Different arrangements, such as fixed pulley, movable pulley, compound pulley, or multiple blocks, provide varying mechanical advantages and load-bearing capacities. The number of pulleys, the combination of fixed and movable pulleys, and the arrangement of the supporting strands can all be tailored to optimize the system for the desired load-bearing capacity. The pulley configuration is determined based on factors such as the weight of the load, the force required for lifting, and the desired lifting efficiency.
5. Load Distribution and Rope/Cable Selection:
– In a double pulley system, load distribution and the selection of appropriate ropes or cables are vital for meeting specific load-bearing requirements. The load needs to be evenly distributed among the supporting strands to ensure balanced load sharing and prevent overloading of individual ropes or cables. The selection of ropes or cables depends on factors such as their tensile strength, flexibility, and resistance to abrasion or environmental conditions. High-strength ropes or cables with suitable load-bearing capacities are chosen to withstand the expected loads and ensure safe and reliable operation.
6. Safety Considerations:
– Customization of double pulleys for specific load-bearing requirements also includes incorporating safety features and considerations. This may involve the addition of features such as locking mechanisms, safety catches, or overload protection systems to prevent accidents or equipment failures due to excessive loads. Safety factors, such as the design and load ratings, are carefully considered to ensure that the pulleys can handle the intended loads without compromising safety.
In summary, double pulleys can be customized for specific load-bearing requirements through material selection, size and diameter optimization, bearing type and efficiency, pulley configuration, load distribution, rope or cable selection, and incorporating necessary safety considerations. By customizing these aspects, double pulleys can be tailored to handle different load capacities, meet application-specific needs, and ensure safe and efficient load handling operations.
What are the advantages of using double pulleys in various systems?
Using double pulleys, also known as block and tackle systems or two-sheave pulleys, offers several advantages in various systems. Here is a detailed explanation of the advantages of using double pulleys:
1. Mechanical Advantage:
– One of the primary advantages of using double pulleys is the mechanical advantage they provide. By distributing the load across multiple strands of rope or cable, double pulleys reduce the force required to lift heavy objects. The mechanical advantage increases as more pulleys and supporting strands are added. This allows for the lifting of heavier loads with less effort, making it easier for individuals to handle challenging lifting tasks.
2. Increased Lifting Capacity:
– Double pulleys effectively increase the lifting capacity of a system. By dividing the load weight among multiple strands, the load-bearing capacity of each individual strand is reduced. This allows for the use of lighter ropes or cables while still being able to lift heavier loads. Consequently, the overall weight of the system is reduced, making it more manageable and less physically demanding for operators.
3. Precise Load Control:
– Double pulleys enable precise load control and movement. The multiple strands of rope or cable provide better stability and prevent excessive swinging or swaying of the load. This is particularly advantageous in applications where delicate or sensitive loads need to be lifted, such as in theatrical productions, art installations, or scientific experiments. The ability to control the load’s movement ensures safety and prevents damage to the load or surrounding environment.
4. Versatility and Flexibility:
– Double pulleys are highly versatile and adaptable to various systems and applications. They can be incorporated into different configurations and setups, allowing for customization based on specific requirements. The flexibility of double pulleys makes them suitable for use in industries such as construction, rigging, material handling, and recreational activities, among others.
5. Reducing Strain and Fatigue:
– Double pulleys significantly reduce strain and fatigue on operators when lifting heavy loads. By distributing the load’s weight across multiple strands, the force required to lift the load is reduced. This minimizes the physical exertion needed from individuals, decreasing the risk of fatigue, muscle strain, and potential injuries associated with manual lifting. Double pulleys help create a safer and more ergonomic working environment.
6. Safety and Load Stability:
– Double pulleys enhance safety during lifting operations. The multiple strands of rope or cable used in a double pulley system provide redundancy, ensuring that if one strand fails, the load can still be supported by the remaining strands. This redundancy increases the overall safety of the system and reduces the risk of catastrophic failures. Additionally, the increased stability offered by double pulleys reduces the likelihood of load shifts or unexpected movements, enhancing overall safety during lifting tasks.
7. Efficient Load Distribution:
– Double pulleys allow for efficient load distribution across the system. By spreading the load weight over multiple strands, the stress on each individual strand is reduced, minimizing the risk of overloading or premature wear and prolonging the lifespan of the ropes or cables. This efficient load distribution contributes to the longevity and reliability of the system.
In summary, using double pulleys in various systems provides advantages such as mechanical advantage, increased lifting capacity, precise load control, versatility, reduced strain and fatigue on operators, enhanced safety, and efficient load distribution. These advantages make double pulleys valuable tools in lifting, rigging, and hoisting applications across different industries and sectors.
editor by CX
2023-12-14