Product Description
Black Mc Nylon Wheel Roller
1.Wheel: nylon
2.Rim: nylon
3.Colour: black
4.Diameter: 180-250mm
5.Bearing: 6204ZZ
6.Packing: Paper box,wodden box
COMPANY INFORMATION:
Xihu (West Lake) Dis. Xihu (West Lake) Dis. Plastic Products Co., Ltd. Is a professional large-scale manufacturer of all types of polyurethane wheel, rubber wheel and roller in China. Our main products include PU wheel, rubber wheel, roller, casters and related products. Our company Located HangZhou, we enjoy convenient water, land and air transportation.
Currently, Xihu (West Lake) Dis. Xihu (West Lake) Dis. Plastic Products Co., Ltd is exported to America, France, Australia, Italy and 20 other countries and regions. Our company has always focused on research, development and innovation, In 2006, we attained RoHS and Reach certification.
Our company regards “reasonable prices, efficient production time and good after-sales service” as our tenet. We hope to cooperate with more customers for mutual development and benefits. We welcome potential buyers to contact us.
ADVANTAGE:
1. hight load capacity.
2. any color can be made(white and black).
3. low rolling resistance,elastic abrasion resistant.
4. any quality nylon can be made.
SHIPPING & DELIVERY DATE:
1. 30%T/T deposit and 70% T/T CHINAMFG copy of B/L.
2. 25-30days after received the 30% deposit.
Q:What Is Polyurethane?
A: Polyurethane is a synthetic material that is used in various applications in nearly every field imaginable. It is renowned for its durability and flexibility and can be produced in a number of different forms based on what it will be used for. Everything from airplane CHINAMFG to tires can be made with polyurethane.
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Q: Polyurethane Identification
A: Polyurethane is identified as a polymer, which is basically a string of smaller molecules known as monomers. In this case, it is a string of urethane. An entire polyurethane chain consists of nitrogen, carbon and oxygen atoms double-bonded to a hydroxyl group, which is also known as an alcohol and is a bonded molecule of oxygen and hydrogen. When various other elements are added to this basic chain, the polyurethane changes, sometimes becoming a rubbery solid, liquid or even a foam.
Q: Polyurethane Features
A: Polyurethane can be manufactured synthetically to have a number of different features, depending on the specific molecules that are added to its basic string of urethane molecules. Some of the more sought-after features of polyurethane are its elasticity and durability. This makes it popular for use with tires and other rubber devices that need to be strong and bendable. Polyurethane can also be made into a squishy, foam-like substance or a substance similar to glue, with the same bonding ability.
Q Polyurethane Function
A: Polyurethane is used in so many different fields and in so many different forms that it is 1 of the most used synthetic materials. Look around your house, and you will be able to find many things that are made of polyurethane. Much of the firmer rubber used for various reasons is polyurethane, and because as an adhesive it is water and heat resistant, it’s used in outdoor and exceptionally hot areas. It is also used in walls as extra padding, and in foam form for soundproofing.
Q: Warning
A: For the most part, polyurethane is not a dangerous substance–which is why there is no limit on exposure to it. However, there are times where it can let off harmful chemicals, including carbon monoxide and other hazardous fumes. This is generally when polyurethane is heated to over 200 degrees C. For this reason, handling this polymer at high temperatures should be done with gloves and a personal breathing apparatus.
Q:Polyurethane Benefits
A: One of the major benefits of polyurethane is its resistance to heat and flames. Using the substance means that it will offer protection from this, which makes it particularly beneficial in the home and in making important substances and materials. It is often used as a coat for wood, plastic or other substances because of this protective property.
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| Type: | Wheel |
|---|---|
| Wheel Material: | Nylon |
| Brake: | Only Wheel |
| Bearing Type: | Ball Bearing |
| Surface Treatment: | No |
| Brand: | Tongzhou |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How are sheave pulleys used in the operation of cranes and hoists?
Sheave pulleys play a vital role in the operation of cranes and hoists, enabling the lifting and movement of heavy loads. Here is a detailed explanation of how sheave pulleys are used in the operation of cranes and hoists:
In cranes and hoists, sheave pulleys are typically incorporated into the lifting mechanism, often in combination with cables or ropes. The integration of sheave pulleys involves the following steps:
1. Lifting Mechanism Design: The lifting mechanism of a crane or hoist is designed based on the specific requirements of the lifting operation. Factors such as load capacity, lifting height, and application type are taken into consideration.
2. Wire Rope Selection: The appropriate wire rope or cable is selected based on the load capacity and other relevant factors. The wire rope is chosen to have suitable properties such as strength, flexibility, and resistance to wear or corrosion.
3. Sheave Pulley Configuration: Sheave pulleys are configured and positioned within the lifting mechanism to guide and support the wire rope. The pulleys are mounted on a framework or structure that allows them to rotate freely.
4. Multiple Pulley Systems: Cranes and hoists often utilize multiple sheave pulleys arranged in various configurations to achieve mechanical advantage and increase lifting capacity. These configurations include single sheave, double sheave, and multiple sheave arrangements.
5. Wire Rope Routing: The wire rope is threaded through the grooves of the sheave pulleys, creating a continuous loop. The pulleys guide the wire rope along the intended path, ensuring proper alignment and minimizing friction.
6. Drive Mechanism: A drive mechanism, such as an electric motor or hydraulic system, provides the power necessary to rotate the sheave pulleys. The rotation of the pulleys causes the wire rope to move, lifting or lowering the load.
7. Lifting and Lowering: When the crane or hoist is operated, the sheave pulleys rotate, causing the wire rope to move. As the wire rope is wound or unwound from the pulleys, the load is lifted or lowered accordingly. The mechanical advantage provided by the multiple pulley systems allows for efficient lifting and precise control.
8. Load Control and Safety: Cranes and hoists incorporate various control mechanisms, such as brakes and limit switches, to ensure safe and controlled lifting operations. These mechanisms work in conjunction with the sheave pulleys and other components to prevent overloading, uncontrolled descent, or other hazardous situations.
Regular maintenance and inspection of the sheave pulleys, wire rope, and other lifting components are essential to ensure the continued safe and reliable operation of cranes and hoists. This includes lubrication of the pulleys, checking for signs of wear or damage, and making necessary adjustments or replacements to maintain optimal functionality.
How are sheave pulleys utilized in industrial machinery and conveyor systems?
Sheave pulleys play a crucial role in industrial machinery and conveyor systems, providing mechanical advantage, facilitating directional changes, and ensuring efficient power transmission. Here is a detailed explanation of how sheave pulleys are utilized in these applications:
1. Belt and Chain Drives: Sheave pulleys are commonly used in belt and chain drive systems to transmit power between different components of industrial machinery. By connecting the driving and driven shafts with a belt or chain looped around the sheave pulleys, rotational motion can be transferred from one shaft to another. The size and configuration of the sheave pulleys determine the speed and torque ratio between the input and output shafts, allowing for speed reduction or amplification as required by the machinery’s design.
2. Conveyor Systems: Sheave pulleys are integral components of conveyor systems used in industries such as manufacturing, mining, and logistics. In conveyor belts, sheave pulleys are typically installed at the ends of the belt to support and guide the belt as it moves. The rotation of the sheave pulleys drives the belt, enabling the transportation of materials or products along the conveyor line. By incorporating multiple sheave pulleys, conveyor systems can be designed to change the direction of belt movement, merge or divert product flows, and accommodate different layouts and configurations within the industrial setting.
3. Tensioning and Tracking: Sheave pulleys are utilized for tensioning and tracking purposes in industrial machinery and conveyor systems. In belt-driven systems, sheave pulleys are often used as idler pulleys to maintain proper tension in the belt. By applying tension to the belt, sheave pulleys ensure that it remains properly engaged with the driving and driven pulleys, preventing slippage and ensuring efficient power transmission. Additionally, sheave pulleys with adjustable positions can be used to track the belt, keeping it centered and aligned within the conveyor system.
4. Load Distribution: Sheave pulleys contribute to load distribution in industrial machinery and conveyor systems. By distributing the load across multiple strands of belts or chains, sheave pulleys minimize stress on individual components and enhance the overall system’s durability and reliability. This load distribution also helps prevent excessive wear and tear on the belts or chains, reducing maintenance requirements and extending their service life.
5. Speed Control: Sheave pulleys allow for speed control in industrial machinery and conveyor systems. By adjusting the diameter or configuration of the sheave pulleys, the rotational speed of the driven components can be regulated. This speed control is crucial in applications where precise control of the machinery’s output speed is required. It enables operators to match the speed of the machinery to the specific requirements of the production process, ensuring optimal performance and efficiency.
6. System Customization: Sheave pulleys offer flexibility and customization options in industrial machinery and conveyor systems. Different sizes, materials, and configurations of sheave pulleys can be selected based on specific application requirements. This allows for the design of systems that can handle a wide range of loads, speeds, and environmental conditions. The ability to customize sheave pulleys ensures that industrial machinery and conveyor systems can be tailored to meet the unique needs of various industries and applications.
Overall, sheave pulleys are essential components in industrial machinery and conveyor systems. They are utilized for belt and chain drives, conveyor systems, tensioning and tracking, load distribution, speed control, and system customization. By providing mechanical advantage, facilitating directional changes, and ensuring efficient power transmission, sheave pulleys contribute to the functionality, performance, and reliability of industrial machinery and conveyor systems in diverse industrial sectors.
What is a sheave pulley, and how does it differ from other types of pulleys?
A sheave pulley, also known as a belt pulley or a rope pulley, is a specific type of pulley used in various mechanical systems. Here is a detailed explanation of what a sheave pulley is and how it differs from other types of pulleys:
A sheave pulley is a grooved wheel or disk with a central axle or hub. It is designed to guide and support a belt, rope, or cable, which passes through the groove or groove(s) on the outer circumference of the pulley. The primary function of a sheave pulley is to transmit force and motion between rotating shafts or to change the direction or speed of rotational motion.
One of the key differences between a sheave pulley and other types of pulleys is the presence of a groove or grooves on the outer circumference. The groove(s) accommodates the belt, rope, or cable, allowing it to wrap around the sheave pulley securely. This design feature ensures proper alignment and grip between the pulley and the belt or rope, preventing slippage and enabling efficient power transmission.
Another distinguishing characteristic of sheave pulleys is their specific application in belt or rope-driven systems. Sheave pulleys are commonly used in various industries and applications, such as conveyor systems, cranes, elevators, and other machinery that rely on belts, ropes, or cables for power transmission or lifting operations.
Here are a few key differences between sheave pulleys and other types of pulleys:
- Grooved Design: Sheave pulleys have a grooved outer circumference to accommodate belts, ropes, or cables, while other pulleys may have a smooth surface or different types of groove patterns depending on their specific applications.
- Belt or Rope Transmission: Sheave pulleys are primarily used in belt or rope-driven systems, where the belt or rope is wrapped around the pulley to transmit power or facilitate lifting. Other pulleys may be used in different transmission systems, such as chain drives or direct mechanical linkages.
- Load Distribution: Sheave pulleys are designed to distribute the load evenly across the belt or rope, helping to prevent excessive stress and wear. Other pulleys may have different load distribution mechanisms based on their specific applications and requirements.
- Size and Configuration: Sheave pulleys come in various sizes and configurations, allowing for customization based on the specific system requirements. Other pulleys may have different size ranges and configurations depending on their intended use.
- Application Specificity: Sheave pulleys are commonly used in industries and applications that require belt or rope-driven systems, such as conveyor systems and lifting equipment. Other types of pulleys may be designed for different applications, such as guiding wires, cables, or chains in specific machinery or equipment.
In summary, a sheave pulley is a grooved wheel or disk used to guide and support belts, ropes, or cables in belt or rope-driven systems. It differs from other types of pulleys in terms of its grooved design, application in belt or rope transmission systems, load distribution mechanism, size and configuration options, and application specificity. Understanding these differences helps in selecting the appropriate pulley for specific mechanical systems and ensuring efficient power transmission or lifting operations.
editor by CX
2024-05-16
