SWL Series Screw Jack/Worm Gear Screw Jack

SWL series worm gear screw jack is one type of screw lift. Its internal structure is a worm gear and a trapezoidal screw, with many functions such as lifting, lowering, propelling with auxiliary parts, turning over, and adjusting various height positions. SWL worm gear screw jack is suitable for low speed, low frequency, large load, and no need of frequent workplace. With a self-locking function under certain conditions, the load can be maintained even without a braking device. Worm gear screw jack can be used alone or in combination, and can accurately control and adjust the height of lifting or propulsion according to a certain program.

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SWL Series Worm Screw Jack

SWL Series Screw Jack Dimensions

Malli	Power(kw)	AB	AH	ΦLB	ΦLC	ΦLA	4-ΦLZ	LE	D	TXV
2.5T	0.37	95	73	110	160	130	M8	5	Φ14	5X16.3
2.5T	0.75	95	75	130	200	165	M10	5	Φ19	6X21.8
5T	0.37	114	93	110	160	130	M8	5	Φ14	5X16.3
	0.75		93	130	200	165	M10	5	Φ19	6X21.8
	1.5		94	130	200	165	M10	5	Φ24	8X27.3
10T	1.5	140	116	130	200	165	M10	5	Φ24	8X27.3
15T	2.2	140	119	180	250	215	M12	5	Φ28	8X31.3
20T	2.2	161	135	180	250	215	M12	5	Φ28	8X31.3
20T	3	161	135	180	250	215	M12	5	Φ28	8X31.3
25T	3	177.5	149	180	250	215	M12	5	Φ28	8X31.3
25T	4	177.5	149	180	250	215	M12	5	Φ28	8X31.3

SWL Worm Gear Screw Jack Specifications

Malli	SWL1,SWL2.5,SWL5,SWL10,SWL15,SWL20,SWL25,SWL35,SWL100,SWL150
Actual loading capacity	100-200kgs, 200-600kgs, 600-1500kgs, 1500-4000kgs…
Suhde	Ordinary (P)	Slow (M)
Structural type	Type 1 – the screw moves in both rotation and axial direction	Type 2 – the screw rotates while nut on the screw moves in an axial direction
Assembly type	Type A – screw (or nut) moves upward	Type B – screw (or nut) moves down
Screw head type	– Type Ⅰ,head cylindrical	– Type Ⅰ,head cylindrical
	– Type Ⅱ,head flange	– Type Ⅰ,head cylindrical
	– Type Ⅲ,head thread	– Type Ⅲ,head thread
	– Type Ⅳ ,head flat head	– Type Ⅲ,head thread
Protection of screw rod	– (basic type)	– (basic type)
	– F (Anti-rotation type )	– F (Anti-rotation type )
	– Z (Type with protection shield)	Z (Type with protection shield)

SWL Series Worm Gear Screw Jack Parameter

Malli		SWL2.5	SWL5	SWL10/15	SWL20	SWL25	SWL35	SWL50	SWL100	SWL120
Max lifting load(Kn)		25	50	100/150	200	250	350	500	1000	1200
Screw diameter* thread dimension(mm)		Tr30*6	Tr40*7	Tr58×12	Tr65*12	Tr90*16	Tr110*18	Tr120*20	Tr160*23	Tr180*25
Worm Ratio	P	6:1	6:1	7:1	8:1	10:1	10:1	10:1	12:1	12:1
Worm Ratio	M	24:1	24:1	23:1	24:1	32:1	32:1	32:1	36:1	36:1
Stroke for one input turn (mm)	P	1.0	1.167	1.565	1.5	1.5	1.69	1.87	1.92	2.083
Stroke for one input turn (mm)	M	0.250	0.292	0.5	0.5	0.5	0.56	0.625	0.638	0.694
Max permissible power(kW)		1.45	2.59	3.47	4.02	5.38	13.06	13.9	28.5	62
Weight per 100mm screw & protective tube(kg)		0.45	0.82	1.67	2.15	4.15	5.20	7.45	13.6	17.3

Worm Gear Screw Jack Parts

Worm Gear Mechanism
At the heart of the SWL screw jack is the worm gear mechanism, which transmits motion from the input shaft to the trapezoidal screw. It ensures smooth, efficient operation while providing the necessary torque to lift or lower heavy loads.
Trapezoidal Screw
The trapezoidal screw is a key component that converts rotational motion into linear motion for lifting, lowering, or pushing. Its durable threads are designed to handle large loads while maintaining precision and stability during operation, even under heavy-duty conditions.
Asuminen
The housing encloses and protects the internal components, such as the worm gear and screw, from environmental factors like dust and moisture. It is typically made from high-strength materials to provide structural support and withstand external forces during operation.
Tuloakseli
The input shaft is where external power, such as a motor or manual crank, is applied to drive the worm gear. It is engineered for smooth rotation, ensuring efficient energy transfer and enabling precise control of the lifting or lowering operations.
Guide Nut
The guide nut, also known as the traveling nut, moves along the trapezoidal screw as it rotates. It ensures smooth and accurate linear motion, allowing the jack to lift or lower loads with high precision and minimal friction.
Self-Locking System
A self-locking feature is integrated into the worm gear mechanism, enabling the SWL screw jack to hold its position under certain conditions without requiring a braking system. This ensures safety and stability during static load applications.
Sealing Components
High-quality sealing components are used to prevent dust, water, and other contaminants from entering the internal mechanism. This enhances the durability and longevity of the screw jack, ensuring reliable performance in various industrial environments.
Mounting Base
The mounting base provides a stable foundation for the SWL worm screw jack, allowing it to be securely installed in different configurations. It is designed to handle the stresses of heavy loads and ensure proper alignment during operation for consistent performance.

Worm Gear Screw Jack Parts

SWL Worm Gear Screw Jack Applications

Industrial Machinery Adjustments
The SWL worm gear screw jack is widely used in industrial machinery for precise height adjustments and controlled motion. It is ideal for lifting or lowering heavy machine components, ensuring accurate positioning and reliable performance in applications such as presses and assembly lines.
Construction Equipment
In the construction industry, the SWL screw jack lift is employed for lifting and supporting heavy structures or equipment. Its self-locking feature ensures stability and safety during tasks like leveling platforms, adjusting scaffolding heights, or aligning structural components.
Material Handling Systems
SWL worm drive screw jacks are integral to material handling systems, enabling the controlled lifting and positioning of conveyors, pallets, and other equipment. Their ability to handle large loads with precision makes them suitable for warehouses, factories, and automated storage systems.
Aerospace and Automotive Testing
In the aerospace and automotive industries, SWL screw jacks are used for testing and calibration purposes. They facilitate fine adjustments of test rigs, lifting of components, and positioning of prototypes, ensuring precise and repeatable results during research and development processes.
Renewable Energy Systems
SWL worm gear screw jacks play a vital role in renewable energy applications, such as adjusting the angle of solar panels or wind turbine components. Their robust design ensures reliable performance under varying environmental conditions, maximizing energy efficiency and system output.
Stage and Theater Equipment
In stage and theater applications, SWL heavy duty screw jacks are used to lift and position platforms, props, and scenery. Their smooth and quiet operation ensures seamless transitions during performances, while their precision allows for accurate adjustments to enhance visual effects and stage dynamics.

Worm Gear Screw Jack Applications

Different Types of Worm Gear Screw Jacks

Electric Worm Gear Screw Jack: This electric screw jack type integrates an electric motor for automated operation, providing precise lifting and lowering of heavy loads. Ideal for high-frequency tasks, it offers consistent performance, energy efficiency, and remote control capabilities, making it suitable for automated production lines or large-scale industrial systems.
Flange Input Worm Gear Screw Jack: Featuring a flange for direct motor or gearbox connection, this type ensures efficient power transmission. Its robust design supports heavy-duty applications, offering flexibility in mounting and precise control for tasks like machinery alignment or load positioning in manufacturing environments.
Manual Drive Hand Crank Screw Jack: Operated by a hand crank, this hand crank screw jack is ideal for low-frequency, manual applications where power sources are unavailable. It provides reliable lifting with minimal maintenance, suitable for small-scale tasks like adjusting workbenches or temporary setups in workshops.
Double Input Shafts Screw Jack: Equipped with dual input shafts, this type allows power input from two sources, enhancing flexibility and torque distribution. It’s perfect for synchronized systems, enabling precise control in applications like conveyor adjustments or multi-point lifting in complex machinery setups.
Translating Screw Jack: This type features a screw that moves linearly through the housing to lift or lower loads directly. Its simple design ensures high load capacity and precise positioning, making it ideal for applications like press machines or material handling in industrial environments.
Rotating Screw Jack: In this type, the screw remains fixed while a rotating nut moves the load along the screw. It’s suited for applications requiring compact design and high precision, such as in stage equipment or solar tracking systems, ensuring stable and controlled movement.