SWL Series Worm Gear Screw Jack
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SWL Series Worm Gear Screw Jack
A screw jack is a mechanical device that uses a screw to lift or move a heavy object. It is a simple and versatile tool used in a variety of applications, including automotive, construction, and manufacturing.
A jack is made up of screws, nuts, and handles. The screw is threaded and connected to a fixed base. The nut is set to the load that needs to be lifted. The handle is used to turn the screw in order to raise the nut and gear.
The amount of force required to turn a screw is determined by the pitch of the screw. Pitch is the distance between the screw threads. A coarse-pitch screw requires more energy to ride than a fine-pitch screw.
The weight a screw jack can lift is determined by the bearing capacity of the screw. Carrying capacity refers to the maximum weight that the screw can be safely lifted.
SWL Series Worm Gear Screw Jack Specification:
| Structural form | Type Ⅰ: axial movement of the screw rod | Type Ⅱ: the screw rod rotates, and the nut moves axially |
| Assembly type | Type A – a rod (or nut) moves upward | Type B — screw rod (or nut) moves downward |
| Screw head type | The screw head of Type 1 structure type includes Type I (cylindrical type), Type II (flange type), Type III (threaded type), and Type IV (flat head type); | The screw head part of the type 2 structure is of type I (cylindrical type) and type III (threaded type) |
| Transmission ratio | Normal speed ratio (P), slow speed ratio (M) | |
| Lifting the bearing capacity | 2.5,5,10,15,20,25,35( × 10kN) seven kinds | |
| Protection of screw rod | Type 1 structure includes basic type, anti-rotation type (F), and types with a protective cover (z); | Type 2 structure includes the basic type and type with a protective cover (Z) |
SWL Series Worm Gear Screw Jack Parameter:
| Type | Structural Style | Model | Output Torque | Screw Diameter | Max. Power | Net Weight (without screw stroke) |
| (KN) | (mm) | (KW) | (KG) | |||
| SWL Screw Jack | I Type | SWL2.5 | 25 | Tr30X6 | 0.55 | 7.3 |
| SWL5 | 50 | Tr40X7 | 1.1 | 16.2 | ||
| SWL10 | 100 | T58X12 | 2.6 | 25 | ||
| SWL15 | 150 | T58X12 | 2.6 | 25 | ||
| SWL20 | 200 | Tr65X12 | 3.7 | 36 | ||
| II Type | SWL | 250 | Tr90X16 | 4.8 | 70.5 | |
| SWL35 | 350 | Tr100X18 | 6 | 87 | ||
| SWL50 | 500 | Tr120X20 | 7.5 | 420 | ||
| SWL100 | 1000 | Tr160X23 | 15 | 1010 | ||
| SWL120 | 1200 | Tr180X25 | 17.5 | 1350 |
Performance Parameters of the Worm Gear Screw Jack:
|
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 Series Worm Gear Screw Jack Features:
● Compact structure, small volume, easy installation;
● High reliability, long life.
● With lifting, lifting, pushing, turning, and other functions, equipped with auxiliary parts.
● It can be used alone or in combination.
● Extensive power supply. It can be driven directly or manually by a motor or other power source.
We are one of the best screw jack suppliers. We can offer wide screw jack stock. We have exported our products to clients worldwide and earned a good reputation because of our superior product quality and after-sales service. We welcome customers at home and abroad to contact us to negotiate business, exchange information, and cooperate with us!
Advantages Of Screw Jacks:
Compared with other lifting mechanisms, screw jacks have the following advantages:
High lifting capacity: Screw jacks can lift heavy objects easily, making them ideal for applications with high lifting capacity.
Precise positioning: Screw jacks can precisely lift and position loads, making them ideal for applications requiring high accuracy.
Easy to use: Screw jack is a simple mechanical device, easy to operate, less maintenance needs.
Versatility: Screw jacks can be used in a variety of applications, from industrial machinery to automobile repair.
Safety: Screw jacks are designed to be stable and secure, which makes them a safe lifting mechanism.
Screw Jack Application:
