Product Description
HangZhou CHINAMFG PULLEY MANUFACTURE CO., LTD. has been specialized in manufacturing Plastic Pulley/Rollers, Die-punching Pulley/Bearing, and Non-standard Bearings for about 25 years. It is located in HangZhou city of ZHangZhoug Province, which has convenient transportation benefited from Nignbo Seaport, HangZhou International Airport and the highway networks. Our company covers an area of 7000 m², with building area of 10500 m². Relying on advanced processing equipments and technology, and strict inspection system, our company is able to provide good-quality and competitive products, and has gained a good reputation among customers.
We are committed to developing and designing different kinds of non-standard pulley bearings, with an annual production capacity of 120 million sets. We export to more than 70 countries and areas, like USA, Canada, Spain, Germany, France and Italy, etc.
Our company maintains our quality system to ISO 9001:2000, and has been audited by SGS for our production operations. We will continuously seek to provide our customers with good-quality products, excellent service and most competitive price. We look CHINAMFG to building long-term business relationship with you and achieving our mutual benefits.
About us
| name | High satisfaction Multicolor blinds windows roller window wheels roller with CE (ML-FS571) |
| Brand name | According to customers’ requirements |
| Size | 76.5*19*23 (As per the customer’s technic drawing or samples) |
| material | pom,pa6,pa66,nylon,pvc,abs…wheels,Aluminium,Zinc,Stainless steel frame |
| Technical process | bearing production assembling,zinc plating,injection,turning |
| Color | orange,white,black,yellow |
| Types | customized |
| Payment terms | A:100% TT B: 30% T/T in advance .70% against copy of B/L |
| Application | caster wheel , small pulley , window , sliding door ,door closet wardrobe system… |
| Product Description | 1.Item No.: as shown in the picture. 2.Material: steel/zinc/aluminum/plastic bracket + ball bearing / needle bearing wheel 3.For some models, the height of the roller is adjustable. 4.Color of the wheel: red, green, white, orange, etc. 5.Application: sliding door and window, binds, rolling shutters, furniture, conveyor belt, etc. 6.Normal packing: poly bag + outer carton |
Contact Us
HangZhou CHINAMFG Pulley Manufacture Co., Ltd.
WEB: http://nbminli /
ADDRESS: No.9 CHINAMFG Road, CHINAMFG Industrial Zone, Xihu (West Lake) Dis. District, HangZhou, China
Comparable products
FAQ
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.
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.
For more information, please visit http://nbminli /
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| After-sales Service: | Online Technical Support |
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| Warranty: | 2 Year |
| Certification: | ISO, RoHS |
| Samples: | US$ 1/Piece 1 Piece(Min.Order) | Order Sample |
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| Customization: | Available | Customized Request |
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.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
| Shipping Cost: Estimated freight per unit. | about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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How does the diameter of a pulley affect its mechanical advantage?
The diameter of a pulley plays a significant role in determining its mechanical advantage. Mechanical advantage refers to the ratio of the output force or load to the input force or effort applied to the pulley system. Here’s how the diameter of a pulley affects its mechanical advantage:
1. Larger Diameter: When the diameter of a pulley increases, the mechanical advantage also increases. A larger diameter means that the circumference of the pulley is greater, allowing a longer length of rope or belt to be wrapped around it. As a result, a larger pulley requires less effort force to lift a given load. This is because the load is distributed over a greater length of rope or belt, reducing the force required to overcome the load.
2. Smaller Diameter: Conversely, when the diameter of a pulley decreases, the mechanical advantage decreases. A smaller diameter means that the circumference of the pulley is reduced, resulting in a shorter length of rope or belt wrapped around it. As a result, a smaller pulley requires more effort force to lift a given load. This is because the load is concentrated over a shorter length of rope or belt, requiring a greater force to overcome the load.
It’s important to note that while a larger diameter pulley offers a greater mechanical advantage in terms of reducing the effort force required, it also results in a slower speed of the load being lifted. This is because the longer length of rope or belt requires more input distance to achieve a given output distance. On the other hand, a smaller diameter pulley offers a lower mechanical advantage but allows for a faster speed of the load being lifted.
The mechanical advantage of a pulley system can be calculated using the formula:
Mechanical Advantage = Load / Effort
Where “Load” refers to the weight or force being lifted and “Effort” refers to the force applied to the pulley system. By adjusting the diameter of the pulley, the mechanical advantage can be optimized to suit the specific requirements of the application, balancing the effort force and speed of the load being lifted.
What is the importance of proper pulley alignment and tensioning?
Proper pulley alignment and tensioning are critical factors in ensuring the efficient and reliable operation of pulley systems. They play a significant role in maximizing power transmission, minimizing wear and tear, and maintaining the overall performance and longevity of the system. Here’s the importance of proper pulley alignment and tensioning:
1. Power Transmission Efficiency:
Proper pulley alignment and tensioning ensure optimal power transmission efficiency. When pulleys are misaligned or belts/chains are improperly tensioned, energy is wasted due to increased friction and slippage. This results in decreased power transfer and reduced system efficiency. By aligning the pulleys parallel to each other and applying the correct tension to the belts or chains, the system can achieve maximum power transmission, minimizing energy losses.
2. Belt/Chain Longevity:
Correct pulley alignment and tensioning contribute to the longevity of belts and chains. Misalignment and inadequate tension can cause uneven wear, excessive stretching, and premature failure of the belts or chains. Proper alignment and tension distribute the load evenly across the belts or chains, reducing stress and extending their lifespan. This helps to avoid unplanned downtime, maintenance costs, and the need for frequent belt/chain replacements.
3. Reduced Noise and Vibration:
Improper pulley alignment and tensioning can lead to increased noise and vibration in the system. Misaligned pulleys or loose belts/chains can cause excessive vibration, resulting in noise, equipment damage, and discomfort to operators or nearby personnel. Proper alignment and tensioning help minimize vibration, ensuring quieter operation and a more comfortable working environment.
4. System Reliability and Safety:
Proper alignment and tensioning contribute to the overall reliability and safety of pulley systems. Misaligned pulleys or loose belts/chains can lead to unexpected failures, breakdowns, or accidents. Over-tensioning can also cause excessive stress on components and increase the risk of system failures. By maintaining proper alignment and tension, the system operates within its design parameters, reducing the likelihood of unexpected failures and ensuring the safety of operators and equipment.
5. Improved Performance:
Correct pulley alignment and tensioning enhance the overall performance of the system. Properly tensioned belts or chains provide better grip and traction, allowing for smoother and more precise movement of the driven components. This results in improved speed control, reduced slippage, and enhanced accuracy in applications such as conveyor systems, machine tools, and automotive engines.
6. Maintenance and Cost Savings:
Proper pulley alignment and tensioning can lead to significant maintenance and cost savings. Well-aligned pulleys and correctly tensioned belts or chains experience less wear and require fewer adjustments. This reduces the frequency of maintenance tasks, such as belt/chain replacements, realignments, and re-tensioning. Additionally, by maximizing power transmission efficiency and minimizing wear, proper alignment and tensioning help reduce energy consumption and lower operating costs.
In conclusion, proper pulley alignment and tensioning are crucial for achieving optimal power transmission efficiency, prolonging the lifespan of belts or chains, reducing noise and vibration, ensuring system reliability and safety, improving performance, and realizing maintenance and cost savings. It is essential to follow manufacturer guidelines and perform regular inspections and adjustments to maintain proper alignment and tension in pulley systems.
How does a fixed pulley differ from a movable pulley?
A fixed pulley and a movable pulley are two distinct types of pulleys that differ in their design and functionality. Here’s a detailed explanation of their differences:
1. Design and Attachment: A fixed pulley is attached to a stationary structure, such as a ceiling or wall, using a mounting bracket or other means. It remains fixed in place and does not move during operation. In contrast, a movable pulley is attached to the load being moved and moves along with it. It is typically suspended by a rope or cable and can freely move up and down.
2. Mechanical Advantage: When it comes to mechanical advantage, a fixed pulley does not provide any advantage. It changes the direction of the force applied but does not reduce the effort required to lift the load. On the other hand, a movable pulley provides mechanical advantage by reducing the effort needed to lift the load. It distributes the load between the rope segments attached to the movable pulley and the fixed point, making it easier to lift heavy objects.
3. Force Distribution: In a fixed pulley, the force applied to one end of the rope or belt is redirected to change the direction of the force. The load is lifted by pulling the opposite end of the rope. In this case, the force required to lift the load is equal to the weight of the load itself. In a movable pulley, the load is attached to the movable pulley itself. The force required to lift the load is reduced because the weight of the load is distributed between the rope segments attached to the movable pulley and the fixed point.
4. Directional Change: Both fixed and movable pulleys are capable of changing the direction of the applied force. However, the primary function of a fixed pulley is to change the direction of force, while a movable pulley combines force direction change with mechanical advantage. The movable pulley allows the operator to exert force in a more convenient direction while requiring less effort to lift the load.
5. Applications: Fixed pulleys are commonly used in combination with other pulleys to create more complex systems, such as block and tackle arrangements. They are often used in scenarios where the primary objective is to change the direction of force. Movable pulleys, on the other hand, are frequently used in systems that require mechanical advantage or a reduction in the effort needed to lift heavy objects. They are often found in applications such as lifting systems, cranes, and elevators.
Overall, the key differences between a fixed pulley and a movable pulley lie in their design, mechanical advantage, force distribution, and applications. While a fixed pulley primarily changes the direction of force, a movable pulley combines force direction change with mechanical advantage, making it easier to lift heavy loads.
editor by CX
2024-05-07