China Standard New Swl5t Trapezoidal Large Hand Manual Bevel Wheel Lift Worm Gear Screw Jack with Swl Series Rotating Mechanism worm gear motor

Product Description

1.Convenient to adjust
2.Wide range of ratio
3.Easy to install
4.high torque
Application Industries:
Our SWL series screw jacks are widely used in the industries such as metallurgy,mining,hoisting and transportation, electrical
power,energy source,constrction and building material,light industry and traffice industry

Screw Jacks in construction

Often found in climbing mechanism of construction,the screw jacks use physical means to raise and lower loads, which typically range from 5 tons to 30 tons. A screw jack is a common type of mechanical jack, which works via a motor and gearbox by an operator. A screw uses the shape of its threads to raise or lower the load, or a traveling nut does the lifting while the screw turns in place. Mechanical jacks are self-locking(not for ball screw), which means that when power is removed from the jack, the screw stays in place until power resumes. This setup makes mechanical jacks safer than their hydraulic counterparts, because users don’t have to fear a loss of power. The main components of screw jacks are; trapezoidal lifting screw also known as lead screw, worm screw, worm gear and gear housing. A worm screw is rotated manually or by a motor. With the rotation of the worm gear, the lead screw in it moves upwards or downwards linearly. The feed rate of the screw depends on the turning speed, the number of teeth of the gears and the size of the screw pitch. In some models of jackscrews, The lifting screw does not move up and down. It only rotates around its axis. A lifting nut (also known as a travelling nut) moves along the lead screw. The lifting nut of the screw jack is made of bronze to decrease friction.

Product Parameters

MODEL

 

SWL2.5

SWL5

SWL10

SWL15

SWL20

SWL25

SWL35

Maximum lifting force (kN)

 

25

50

100

150

200

250

350

Screw thread size

 

Tr30*6

Tr40*7

Tr58*12

Tr58*12

Tr65*12

Tr90*16

Tr100*20

Maximum tension (kN)

 

25

50

99

166

250

350

Worm gear ratio (mm)

P

1/6

1/8

3/23

1/8

3/32

3/32

 

M

1/24

1/24

1/24

1/24

1/32

1/32

Worm non rotating stroke (mm)

P

1.0

0.875

1.565

1.56

1.5

1.875

M

0.250

0.292

0.5

0.5

0.5

0.625

Maximum elongation of screw rod under tensile load (mm)

 

1500

2000

2500

3000

3500

4000

Maximum lifting height at maximum pressure load (mm)

The head of the screw rod is not guided

250

385

500

400

490

850

820

Lead screw head guide

400

770

1000

800

980

1700

1640

Worm torque at full load(N.m)

P

18

39.5

119

179

240

366

464

M

8.86

19.8

60

90

122

217

253

efficiency(%)

P

22

23

20.5

 

19.5

16

18

M

11

11.5

13

 

12.8

9

11

Weight without stroke(kg)

 

7.3

16.2

25

 

36

70.5

87

Weight of screw rod per 100mm(kg)

 

0.45

0.82

1.67

 

2.15

4.15

5.20

Detailed Photos

 

 

 

SWL Series worm screw Jack:

1.The elevator is a combination of turbine pair and trapezoid screw rod to complete the lifting and lowering of objects. 2.Compact structure, light weight, safety and reliability, long service life, convenient installation

3.Self-locking function in the static state.

 

1. screw rod

2. nut bolt

3. cover

4.Skeleton oil seal

5.Bearing

6.Worm gear

7.Oil filling hole

8.Case

9.Skeleton oil seal

10.Cover

11. nut bolt

12.Bearing

13.Skeleton oil seal

14.Bearing

15.worm

16.Flat key

17.Bearing

18.Skeleton oil seal

19.Cover

20.Nut bolt

Product Description

 

Related Products

 

Packaging & Shipping

 

Company Profile

 

Standard or Nonstandard: Nonstandard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Power Transmission
Product Name: Swl Series Worm Gear Lift
Input Speed: 0-1440rpm
Ratio: 6-36
Applicable Industries: Hotels, Manufacturing Plant, Food & Beverage Facto
Samples:
US$ 50/Piece
1 Piece(Min.Order)

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Request Sample

screw gear

How do you install a screw gear system?

Installing a screw gear system, also known as a worm gear system, requires careful consideration and precise execution. Here’s a detailed explanation of the steps involved in installing a screw gear system:

  1. Design and Selection: Before installation, it is crucial to design and select the appropriate screw gear system for the specific application. Consider factors such as required torque, speed, load capacity, gear ratio, and environmental conditions. Choose a screw gear system that matches the application’s requirements and ensure compatibility with other components and machinery.
  2. Prepare the Components: Gather all the necessary components for the screw gear system installation, including the worm gear, worm wheel, bearings, shafts, and any additional accessories or support structures. Inspect the components for any damage or defects and ensure they are clean and properly lubricated.
  3. Mounting the Worm Gear: Begin the installation by mounting the worm gear. Securely attach the worm gear to the appropriate shaft or motor using suitable fasteners. Ensure that the alignment of the worm gear is accurate, and it is properly centered on the shaft to avoid any misalignment issues during operation.
  4. Mounting the Worm Wheel: Once the worm gear is in place, mount the worm wheel. The worm wheel should be positioned in such a way that it meshes smoothly with the worm gear. Ensure that the worm wheel is securely mounted, and any necessary bearings or supports are properly installed to maintain stability and alignment.
  5. Alignment and Adjustment: Proper alignment of the screw gear system is crucial for its efficient operation. Ensure that the worm gear and worm wheel are correctly aligned both axially and radially. Check for any excessive play or binding in the system. Make necessary adjustments to achieve optimal alignment and smooth meshing between the gears.
  6. Lubrication: Apply the recommended lubricant to the screw gear system. Proper lubrication is essential to minimize friction and wear, ensuring smooth operation and extending the system’s lifespan. Follow the manufacturer’s guidelines regarding the type and amount of lubricant to use.
  7. Testing and Fine-Tuning: After installation, perform thorough testing of the screw gear system. Check for smooth operation, proper engagement between the gears, and any abnormal noise or vibration. Fine-tune the system if necessary, making adjustments to achieve the desired performance and ensure optimal functionality.
  8. Regular Inspection and Maintenance: Once the screw gear system is installed and operational, it is important to establish a regular inspection and maintenance schedule. Regularly inspect the system for signs of wear, lubrication levels, and any potential issues. Perform routine maintenance tasks such as cleaning, lubrication replenishment, and component replacement as needed.

It is crucial to follow the manufacturer’s guidelines and specifications during the installation process. If unsure about any aspect of the installation, consult with experts or refer to the manufacturer’s documentation for detailed instructions specific to the screw gear system being installed.

screw gear

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

Designing and manufacturing screw gears, also known as worm gears, can present several challenges that need to be addressed to ensure the successful production of high-quality gear systems. Here’s a detailed explanation of the potential challenges in designing and manufacturing screw gears:

  • Complex Geometry: Screw gears have complex tooth profiles and geometry, which can pose challenges during the design and manufacturing processes. The design must consider factors such as the helix angle, lead angle, and tooth shape to ensure proper gear engagement and efficient power transmission. Manufacturing these intricate geometries accurately can be technically demanding.
  • Manufacturing Tolerances: Achieving tight manufacturing tolerances is crucial for the proper functioning of screw gears. The gear components need to be precisely machined to ensure accurate tooth profiles, pitch, and concentricity. Maintaining these tight tolerances throughout the production process can be challenging, especially when working with materials that have dimensional variations or when scaling up production.
  • Machining and Grinding: The machining and grinding processes involved in manufacturing screw gears require specialized equipment and expertise. The use of multi-axis CNC machines, gear hobbing, or grinding machines is often necessary to achieve the required tooth profiles and surface finishes. These processes can be time-consuming and costly, requiring skilled operators and careful process control to ensure accurate and repeatable results.
  • Material Selection: Choosing the right materials for screw gears is critical to ensure durability, wear resistance, and efficient power transmission. Factors such as hardness, strength, and compatibility with lubricants must be considered. Selecting suitable materials that meet the specific application requirements can be challenging, particularly when balancing cost, performance, and manufacturing constraints.
  • Lubrication and Heat Dissipation: Screw gears require proper lubrication to reduce friction, wear, and heat generation. Designing effective lubrication systems and ensuring proper lubricant selection and distribution can be challenging. Heat dissipation is also a concern, especially in high-speed or high-torque applications, as excessive heat can affect gear performance and longevity. Adequate cooling methods or heat dissipation strategies may need to be implemented.
  • Backlash and Efficiency: Screw gears inherently exhibit some level of backlash due to the nature of their tooth engagement. Managing and minimizing backlash can be a challenge, as it affects the precision and accuracy of the gear system. Additionally, screw gears generally have lower mechanical efficiency compared to other gear types, which can be a concern in applications where efficiency is critical. Designing for improved efficiency and mitigating backlash can require careful consideration of gear parameters and materials.
  • Noise and Vibration: Screw gears can generate noise and vibration during operation, which can be undesirable in many applications. Designing for reduced noise and vibration requires careful consideration of gear tooth profiles, surface finishes, and lubrication. Balancing gear parameters and implementing vibration-damping measures can help mitigate noise and vibration issues, but it can be a complex task that requires extensive testing and iterative design improvements.
  • Cost and Manufacturing Scalability: Designing and manufacturing screw gears can be costly, especially when precision machining, specialized equipment, and skilled labor are involved. The cost of materials, heat treatment, and surface finishing processes can also contribute to the overall production cost. Additionally, scaling up production while maintaining consistent quality and meeting cost targets can pose challenges that require careful planning and optimization.

Addressing these challenges requires a combination of engineering expertise, advanced manufacturing techniques, and rigorous quality control. By carefully considering these factors during the design and manufacturing phases, it is possible to overcome the challenges and produce screw gears that meet the required performance, durability, and reliability standards.

screw gear

Can you explain the concept of screw gear threads and their functions?

Screw gear threads play a crucial role in the operation and functionality of screw gears, also known as worm gears. The threads are an essential component of the worm, which is the cylindrical gear with a helical thread wrapped around it. Here is a detailed explanation of the concept of screw gear threads and their functions:

  • Thread Design: The threads on a screw gear, specifically the helical thread on the worm, are designed in a helical shape, resembling the threads of a screw. The helical thread is wrapped around the cylindrical body of the worm, creating a continuous spiral path along its length. The pitch of the thread refers to the distance between successive thread crests or valleys.
  • Meshing with Worm Wheel: The primary function of the screw gear threads is to mesh with the teeth of the worm wheel. The helical thread of the worm engages with the teeth of the worm wheel, creating a sliding contact between them. As the worm rotates, the helical thread drives the rotation of the worm wheel, transmitting rotational motion and power.
  • Gear Reduction and Torque Multiplication: The helical design of the screw gear threads allows for a large number of teeth on the worm wheel to be engaged at any given time. This results in a high gear reduction ratio, meaning that for each revolution of the worm, the worm wheel rotates by a smaller fraction. The gear reduction ratio enables torque multiplication, making screw gears suitable for applications requiring high torque output.
  • Precision Positioning: Screw gear threads are crucial for achieving precise positioning in applications where accuracy is essential. The fine pitch of the helical thread allows for small incremental movements, enabling precise control over the rotation of the worm wheel. This feature is particularly advantageous in applications such as robotics, where accurate positioning and motion control are necessary.
  • Self-Locking Action: The helical thread design of screw gears gives them a self-locking capability. When the worm is not rotating, the friction between the helical thread and the teeth of the worm wheel tends to hold the gear system in place. This self-locking action prevents the worm wheel from backdriving the worm, providing inherent braking or locking functionality. It ensures that the gear mechanism maintains its position without the need for additional braking or locking mechanisms.
  • Efficiency and Lubrication: The sliding action between the screw gear threads and the teeth of the worm wheel introduces more friction compared to other types of gears with rolling motion. This sliding motion affects the efficiency of the gear mechanism, resulting in higher energy losses and heat generation. Proper lubrication with appropriate lubricants is essential to minimize wear, reduce friction, and improve the overall efficiency of the screw gears.

Overall, screw gear threads enable the meshing and transmission of rotational motion and power between the worm and the worm wheel. They facilitate gear reduction, torque multiplication, precise positioning, and self-locking action. Understanding the design and functions of screw gear threads is crucial for utilizing screw gears effectively in various applications.

China Standard New Swl5t Trapezoidal Large Hand Manual Bevel Wheel Lift Worm Gear Screw Jack with Swl Series Rotating Mechanism worm gear motorChina Standard New Swl5t Trapezoidal Large Hand Manual Bevel Wheel Lift Worm Gear Screw Jack with Swl Series Rotating Mechanism worm gear motor
editor by CX 2023-09-06

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