China Standard 1200lb Heavy Duty Hand Winch 2500lb Manual Worm Gear for Trailer /Boat raw gear

Product Description

 

Product Parameters

Product Description

Hand winch is used as a widespread instrument for automobile, shipping, transport, workshop, agriculture and sports facilities, etc. It is an ideal common instrument for operating in or out door. Welcomed by consumers. It has functions of structure compactly. Being easy to carry, operating simply, and can be operated with no power.

Wire cable hand winch  installed on automobiles can also pull pieces of equipment or trailers behind the automobile at a slow speed, or help to remove brush, stones or other large, heavy objects to which the winch cord is connected. Wire cable hand winch self-activating automatic brake hold the load securely when crank handle is released.Wire cable hand winch large drum hub to maximize cable life.

Boat Manual Hand Winch With Wire Rope can be in the snow, swamp, desert, beach and harsh environments, such as muddy road on the vehicle itself, to remove obstacles, drag and drop items, installation facilities such as homework, also can be used as a modern electronic control automatic production line equipment, oil, hydrology, environmental protection, forestry, transportation, public security, frontier defense, fire control and other outdoor sports indispensable safety devices.

Hand winch advantage:
* Hand winch can be in the snow, swamp, desert, beach and harsh environments
* Compact structure, small size, light weight, large lifting weight.
* High universality and convenient transfer.
* Light and dexterous, safe and firm use.
* Easy to carry, can be connected from any direction of the car.

Detailed Photos

 

Packaging & Shipping

manner of packing carton
International Commercial Terms(Incoterms): FOB, CFR, CIF
Terms of Payment: T/T
Average Lead Time: Peak Season Lead Time: within 15 workdays, Off Season Lead Time: within 15 workdays
Main Markets:

North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East, Eastern Asia,Western Europe

Nearest Port: HangZhou
Import & Export Mode: Have Own Export License

 

Company Profile

 HangZhou CHINAMFG RIGGING CO.,LTD. 

Our company supplies different kinds of products. High quality and reasonable price. We stick to the principle of “quality first, service first, continuous improvement and innovation to meet the customers” for the management and “zero defect, zero complaints” as the quality objective. To perfect our service, we provide the products with good quality at the reasonable price.

2005 began production and processing ratchet tie down, hand ratchet puller. In the smooth development of 2011, with 6 years of accumulated experience in 2011, the establishment of the car to help lifting machinery plant, focusing on the development, research and production of automotive logistics safety equipment, and simultaneously registered “car help” “Two independent brands. And has been participating in domestic and foreign exhibition 30 in the field, has accumulated a wealth of experience.

 

FAQ

1. Do you provide sample?
Yes,we offer free sample. 

2.Can we use our own logo? 
Yes,we can produce by using your own logo if you need. 

3.Can products be customized? 
Yes,all products can be customized to meet your requirement. 

4.How about payment terms? 
It is ok to pay by TT or paypal at your convenience. 

5.What is the shipping date? 
(1)Shipped in 30 days after payment.Provide you with the best quality service.
(2)After receiving the inquiry, we will promptly reply to you. 
(3)After receiving the order, we will give you timely feedback on the situation of the goods. 
(4)We will quickly handle customs clearance and other issues. 
(5)Any question after receiving the goods, we will promptly reply to you and resolve.

 

Shipping Cost:

Estimated freight per unit.



To be negotiated
Type: Hand Winch
Driven Type: Hand Winch
Speed: Slow
Samples:
US$ 9.9/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

worm gear

Are worm gears suitable for high-torque applications?

Worm gears are indeed well-suited for high-torque applications. Here’s a detailed explanation of why worm gears are suitable for high-torque applications:

Worm gears are known for their ability to provide significant speed reduction and torque multiplication. They consist of a threaded cylindrical gear, called the worm, and a toothed wheel, called the worm wheel or worm gear. The interaction between the worm and the worm wheel enables the transmission of motion and torque.

Here are the reasons why worm gears are suitable for high-torque applications:

  • High gear reduction ratio: Worm gears offer high gear reduction ratios, typically ranging from 20:1 to 300:1 or even higher. The large reduction ratio allows for a significant decrease in rotational speed while multiplying the torque output. This makes worm gears effective in applications that require high levels of torque.
  • Self-locking capability: Worm gears possess a unique self-locking property, which means they can hold position and prevent backdriving without the need for additional braking mechanisms. The angle of the worm thread creates a mechanical advantage that resists reverse rotation of the worm wheel, providing excellent self-locking characteristics. This self-locking capability makes worm gears ideal for applications where holding the load in place is crucial, such as in lifting and hoisting equipment.
  • Sturdy and robust design: Worm gears are typically constructed with durable materials, such as steel or bronze, which offer high strength and resistance to wear. This robust design enables them to handle heavy loads and transmit substantial torque without compromising their performance or longevity.
  • High shock-load resistance: Worm gears exhibit good resistance to shock loads, which are sudden or intermittent loads that exceed the normal operating conditions. The sliding contact between the worm and the worm wheel teeth allows for some degree of shock absorption, making worm gears suitable for applications that involve frequent or unexpected high-torque impacts.
  • Compact and space-efficient: Worm gears have a compact design, making them space-efficient and suitable for applications where size is a constraint. The compactness of worm gears allows for easy integration into machinery and equipment, even when there are spatial limitations.

It’s important to consider that while worm gears excel in high-torque applications, they may not be suitable for high-speed applications. The sliding contact between the worm and the worm wheel generates friction, which can lead to heat generation and reduced efficiency at high speeds. Therefore, worm gears are typically preferred in low to moderate speed applications where high torque output is required.

When selecting a worm gear for a high-torque application, it’s important to consider the specific torque requirements, operating conditions, and any additional factors such as speed, efficiency, and positional stability. Proper sizing, lubrication, and maintenance are also crucial to ensure optimal performance and longevity in high-torque applications.

worm gear

What are the potential challenges in designing and manufacturing worm gears?

Designing and manufacturing worm gears can present several challenges due to their unique characteristics and operating conditions. Here’s a detailed explanation of the potential challenges involved:

  1. Complex geometry: Worm gears have complex geometry with helical threads on the worm shaft and corresponding teeth on the worm wheel. Designing the precise geometry of the gear teeth, including the helix angle, lead angle, and tooth profile, requires careful analysis and calculation to ensure proper meshing and efficient power transmission.
  2. Gear materials and heat treatment: Selecting suitable materials for worm gears is critical to ensure strength, wear resistance, and durability. The materials must have good friction and wear properties, as well as the ability to withstand the sliding and rolling contact between the worm and the worm wheel. Additionally, heat treatment processes such as carburizing or induction hardening may be necessary to enhance the gear’s surface hardness and improve its load-carrying capacity.
  3. Lubrication and cooling: Worm gears operate under high contact pressures and sliding velocities, resulting in significant heat generation and lubrication challenges. Proper lubrication is crucial to reduce friction, wear, and heat buildup. Ensuring effective lubricant distribution to all contact surfaces, managing lubricant temperature, and providing adequate cooling mechanisms are important considerations in worm gear design and manufacturing.
  4. Backlash control: Controlling backlash, which is the clearance between the worm and the worm wheel, is crucial for precise motion control and positional accuracy. Designing the gear teeth and adjusting the clearances to minimize backlash while maintaining proper tooth engagement is a challenge that requires careful consideration of factors such as gear geometry, tolerances, and manufacturing processes.
  5. Manufacturing accuracy: Achieving the required manufacturing accuracy in worm gears can be challenging due to their complex geometry and tight tolerances. The accurate machining of gear teeth, maintaining proper tooth profiles, and achieving the desired surface finish require advanced machining techniques, specialized tools, and skilled operators.
  6. Noise and vibration: Worm gears can generate noise and vibration due to the sliding contact between the gear teeth. Designing the gear geometry, tooth profiles, and surface finishes to minimize noise and vibration is a challenge. Additionally, the selection of appropriate materials, lubrication methods, and gear housing design can help reduce noise and vibration levels.
  7. Efficiency and power loss: Worm gears inherently have lower efficiency compared to other types of gear systems due to the sliding contact and high gear ratios. Minimizing power loss and improving efficiency through optimized gear design, material selection, lubrication, and manufacturing accuracy is a challenge that requires careful balancing of various factors.
  8. Wear and fatigue: Worm gears are subjected to high contact stresses and cyclic loading, which can lead to wear, pitting, and fatigue failure. Designing the gear teeth for proper load distribution, selecting appropriate materials, and applying suitable surface treatments or coatings are essential to mitigate wear and fatigue issues.
  9. Cost considerations: Designing and manufacturing worm gears can be cost-intensive due to the complexity of the gear geometry, material requirements, and precision manufacturing processes. Balancing performance requirements with cost considerations is a challenge that requires careful evaluation of the gear’s intended application, performance expectations, and budget constraints.

Addressing these challenges requires a comprehensive understanding of gear design principles, manufacturing processes, material science, and lubrication technologies. Collaboration between design engineers, manufacturing experts, and material specialists is often necessary to overcome these challenges and ensure the successful design and production of high-quality worm gears.

worm gear

Can you explain the concept of worm and worm wheel in a worm gear?

In a worm gear system, the worm and worm wheel are the two primary components that work together to transmit motion and power. Here’s an explanation of the concept:

Worm:

The worm is a cylindrical shaft with a helical thread wrapped around it. It resembles a screw with a spiral groove. The helical thread is called the worm’s thread or worm thread. The worm is the driving component in the worm gear system.

When the worm rotates, the helical thread engages with the teeth of the worm wheel, causing the worm wheel to rotate. The angle of the helical thread creates a wedging action against the teeth of the worm wheel, resulting in a high gear reduction ratio.

One important characteristic of the worm is its self-locking nature. Due to the angle of the helical thread, the worm can drive the worm wheel, but the reverse is not true. The self-locking feature prevents the worm wheel from backdriving the worm, providing a mechanical brake or holding position in the system.

The worm can be made from various materials such as steel, bronze, or even plastics, depending on the application requirements. It is often mounted on a shaft and supported by bearings for smooth rotation.

Worm Wheel:

The worm wheel, also known as the worm gear, is the driven component in the worm gear system. It is a gear with teeth that mesh with the helical thread of the worm. The teeth on the worm wheel are typically helical and cut to match the angle and pitch of the worm’s thread.

As the worm rotates, its helical thread engages with the teeth of the worm wheel, causing the worm wheel to rotate. The rotation of the worm wheel is in the same direction as the worm’s rotation, but the speed is significantly reduced due to the high gear reduction ratio of the worm gear system.

The worm wheel is usually larger in diameter compared to the worm, allowing for a higher gear reduction ratio. It can be made from materials such as steel, bronze, or cast iron, depending on the application’s torque and durability requirements.

Together, the worm and worm wheel form a compact and efficient gear system that provides high gear reduction and self-locking capabilities. They are commonly used in various applications where precise motion control, high torque, and compactness are required, such as elevators, steering systems, and machine tools.

China Standard 1200lb Heavy Duty Hand Winch 2500lb Manual Worm Gear for Trailer /Boat raw gearChina Standard 1200lb Heavy Duty Hand Winch 2500lb Manual Worm Gear for Trailer /Boat raw gear
editor by CX 2023-09-27

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worm gear jack

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