China best Quality Manual Worm Gear Screw Jack, Worm Gear Screw Jack Manufacturer Lifting Jack gear patrol

Product Description

SWL series skillful manufacture screw reducer: 

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
 

Product Parameters

Type

Model

Screw thread size

Max
lifting strength
kN

Max
pull force
kN

Weight without stroke
kg

Screw weight
per 100mm

SWL

Screw jack

SWL2.5

Tr30*6

25

25

7.3

0.45

SWL5

Tr40*7

50

50

16.2

0.82

SWL10/15

Tr58*12

100/150

99

25

1.67

SWL20

Tr65*12

200

166

36

2.15

SWL25

Tr90*16

250

250

70.5

4.15

SWL35

Tr100*18

350

350

87

5.20

SWL50

Tr120*20

500

500

420

7.45

SWL100

Tr160*23

1000

1000

1571

13.6

SWL120

Tr180*25

1200

1200

1350

17.3

1.Compact structure,Small size.Easy mounting,varied types.  Can be applied in 1 unit or multiple units.

2.High reliability.Long service life; With the function of   ascending,descending,thrusting,overturning

3.Wide motivity.It can be drived by  electrical motor and manual force.

4.It is usually used in low speed situation,widely used in the fields of
metallurgy,mechanical,construction,chemical,irrigation works,mediat treatment.

 

Detailed Photos

PRODUCT SPECIFICATIONS

SWL Series

Swl series worm screw lift is a kind of basic lifting component, which can lift, lower, propel, turn and other functions through the worm drive screw.
Screw jack can be widely used in machinery, metallurgy, construction, chemical, medical, cultural and health, and other industries. Can according to a certain procedure to accurately control the adjustment of the height of ascension or propulsion, can be directly driven by motor or other power, can also be manually. This series of worm screw lift can be self-locking, with the bearing capacity ranging from 2.5 tons to 120 tons, the maximum input speed of 1500 r/min, and the max lifting speed of 2.7 m/min.

Features:

1. Suitable for heavy load, low speed and low frequency;

2. Main components: precision trapezoid screw pair and high precision worm gear pair.

3. Compact design, small volume, light weight, wide drive sources, low noise, easy operation, convenient
maintenance.

4. The trapezoid screw has self-locking function, it can hold up load without braking device when screw stops traveling.

5. The lifting height can be adjusted according to customer requirements.

6. Widely applied in industries such as machinery, metellurgy, construction and hydraulic equipment.

7. Top End: top plate, clevis end, threaded end, plain end, forked head and rod end.

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

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

SWL Worm Gear Screw Jack Mounting Dimensions

 

Standard or Nonstandard: Nonstandard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Power Transmission
Input Speed: 8-360rpm
Gear Material: Low Carbon High Alloy Steel
Gearing Arrangement: Worm
Mounting Position: Horizontal (Foot Mounted) or Vertical (Flange Moun
Samples:
US$ 50/Piece
1 Piece(Min.Order)

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Request Sample

screw gear

What are the advantages and disadvantages of using screw gears?

Using screw gears, also known as worm gears, offers several advantages and disadvantages. These gears have unique characteristics that make them suitable for specific applications but may also present limitations in certain scenarios. Here’s a detailed explanation of the advantages and disadvantages of using screw gears:

Advantages:

  • High Gear Ratio: Screw gears provide high gear ratios, meaning that a small rotation of the worm gear can result in a significant rotation of the worm wheel. This high gear ratio allows for precise control and slow movement, making screw gears suitable for applications that require fine adjustments and positioning accuracy.
  • Self-Locking: Screw gears have a self-locking characteristic, which means that they can hold their position without the need for additional braking mechanisms or external locking devices. This feature is particularly useful in applications where load holding or preventing back-driving is essential, such as in lifting systems or incline conveyors.
  • Compact Design: Screw gears have a compact design due to their single-threaded helical shape. This compactness allows for space-saving installations, making screw gears advantageous in applications with limited space or tight packaging requirements.
  • Quiet Operation: Screw gears typically operate with reduced noise levels compared to other gear types. The sliding contact between the worm gear and the worm wheel results in less gear mesh noise, making screw gears suitable for applications that require low noise levels or quiet operation.

Disadvantages:

  • Lower Mechanical Efficiency: Screw gears generally have lower mechanical efficiency compared to other gear types, such as spur gears or helical gears. The sliding motion between the worm gear and the worm wheel generates more friction, leading to energy losses and reduced efficiency. However, advancements in gear design, materials, and lubrication can help mitigate this disadvantage to some extent.
  • Limited Power Transmission Capacity: Screw gears are typically not suitable for high-power transmission applications. Due to the sliding contact and high gear ratios, they may have limitations in terms of torque capacity. In high-power applications, other gear types, such as spur or helical gears, are often preferred due to their higher load-carrying capabilities.
  • Potential Backlash: Screw gears can exhibit backlash, which refers to the play or clearance between the mating teeth of the worm gear and the worm wheel. Backlash can lead to reduced accuracy, vibration, and inefficient power transmission. Minimizing backlash through precise manufacturing and proper gear meshing is crucial to mitigate this issue.
  • Requires Proper Lubrication: Screw gears rely on adequate lubrication to minimize friction and ensure smooth operation. Proper lubrication is essential to prevent excessive wear, overheating, and premature failure. Regular maintenance and lubrication checks are necessary to maintain the efficiency and lifespan of screw gear systems.
  • Manufacturing Complexity: The manufacturing process of screw gears can be more complex compared to other gear types. Achieving precise gear tooth profiles and maintaining proper gear meshing requires careful machining and specialized equipment. This complexity can increase manufacturing costs and lead times.

When considering the use of screw gears, it is important to evaluate the specific requirements of the application, such as the need for high gear ratios, load capacity, positional accuracy, and noise levels. By carefully assessing the advantages and disadvantages, engineers can determine whether screw gears are the most suitable choice for their particular application.

screw gear

Can screw gears be used in heavy-duty machinery and equipment?

Yes, screw gears, also known as worm gears, can be used in heavy-duty machinery and equipment. Screw gears offer several advantages that make them suitable for such applications. Here’s a detailed explanation of using screw gears in heavy-duty machinery and equipment:

  • High Load Capacity: Screw gears are known for their high load-carrying capacity. The helical design of the gear teeth allows for distributed contact between the worm gear and the worm wheel, enabling them to handle significant loads. This makes screw gears well-suited for heavy-duty applications where large forces and torque need to be transmitted.
  • Self-Locking Capability: Screw gears have a self-locking feature, which means they can hold position without the need for additional braking mechanisms. In heavy-duty machinery and equipment, this self-locking capability can be advantageous, especially when it is necessary to prevent the load from moving or to maintain position under static or dynamic loads.
  • Compact Design: Screw gears have a compact design, which allows for space-saving installations in heavy-duty machinery and equipment. Their axial orientation and the ability to achieve high gear ratios in a single stage contribute to their compactness. This is particularly beneficial in applications where space is limited or where a compact gear system is desirable.
  • Smooth and Quiet Operation: Screw gears generally operate with low noise and vibration levels. The helical nature of the gear teeth engagement results in smooth and continuous contact, reducing noise and minimizing vibrations. This is advantageous in heavy-duty machinery and equipment, where quiet operation is often desired to enhance operator comfort and minimize the impact on surrounding components.
  • High Gear Reduction Ratios: Screw gears can achieve high gear reduction ratios in a single stage, which is beneficial in heavy-duty applications that require significant speed reduction or torque multiplication. This eliminates the need for multiple gear stages or additional components, simplifying the gear system design and reducing the overall complexity.
  • Durability and Longevity: Screw gears are known for their durability and long service life. When properly designed, manufactured, and maintained, they can withstand heavy loads, operate under challenging conditions, and exhibit good resistance to wear and fatigue. This makes them suitable for heavy-duty machinery and equipment that operate in demanding environments.
  • Compatibility with Various Materials: Screw gears can be manufactured from different materials to suit specific application requirements. This flexibility allows for compatibility with various other components and materials used in heavy-duty machinery and equipment. The choice of materials can be tailored to factors such as strength, wear resistance, and compatibility with lubricants or operating conditions.

In summary, screw gears can be effectively used in heavy-duty machinery and equipment due to their high load capacity, self-locking capability, compact design, smooth operation, high gear reduction ratios, durability, and compatibility with different materials. By considering the specific requirements of the application and employing proper design and manufacturing practices, screw gears can provide reliable and efficient power transmission in heavy-duty scenarios.

screw gear

What are the benefits of using a screw gear mechanism?

A screw gear mechanism, also known as a worm gear mechanism, offers several benefits that make it suitable for various applications. Here are some of the key advantages of using a screw gear mechanism:

  • High Gear Reduction Ratio: Screw gears provide a high gear reduction ratio, which allows for significant torque multiplication. This means that a small input torque can produce a much larger output torque, making screw gears ideal for applications that require high torque output and low-speed rotation.
  • Precise Positioning: Screw gears offer precise positioning capabilities due to their fine-pitch threads and high gear reduction ratio. This makes them well-suited for applications that require accurate and controlled motion control, such as robotics, automation, and positioning systems.
  • Self-Locking: One of the notable advantages of screw gears is their self-locking property. The friction between the worm and the worm wheel prevents the backdriving of the system when at rest, eliminating the need for additional braking mechanisms or external locks. This self-locking feature is particularly useful in applications where holding a position is crucial, such as elevators, lifts, and safety mechanisms.
  • Compact Design: Screw gear mechanisms have a compact design, making them suitable for applications with limited space. The worm and worm wheel configuration allows for a compact layout, enabling efficient power transmission in tight spaces where other types of gear mechanisms may not be feasible.
  • Quiet Operation: Screw gears typically operate more quietly compared to other gear types. The meshing of the helical threads results in smooth and gradual contact, reducing noise and vibration. This makes screw gear mechanisms desirable in applications where low noise levels are essential, such as in audio equipment, precision instruments, and residential environments.
  • High Shock Load Resistance: Screw gears are known for their ability to withstand shock loads. The helical nature of the threads and the larger contact area between the worm and the worm wheel distribute the load more evenly, reducing the risk of sudden failures or damage due to shock or impact loads.
  • Reliable and Durable: Screw gears are known for their reliability and durability. The simplicity of their design, with fewer moving parts, results in fewer points of failure. Additionally, the self-locking feature reduces the chances of unwanted movement or slippage. When properly lubricated and maintained, screw gear mechanisms can have a long service life and require minimal maintenance.
  • Versatility: Screw gears can be manufactured in various sizes, materials, and configurations to suit different applications. They can be designed as right-handed or left-handed, with different thread pitches and tooth profiles. This versatility allows for customization and adaptability to meet specific application requirements.

These benefits make screw gear mechanisms a popular choice in industries such as manufacturing, automotive, robotics, elevators, and various other applications where high torque, precise positioning, compactness, and reliability are crucial.

China best Quality Manual Worm Gear Screw Jack, Worm Gear Screw Jack Manufacturer Lifting Jack gear patrolChina best Quality Manual Worm Gear Screw Jack, Worm Gear Screw Jack Manufacturer Lifting Jack gear patrol
editor by CX 2023-10-08