SWL Worm Gear Screw Jack

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The SWL screw lift is a basic lifting device, capable of carrying out multiple functions, including raising, lowering, and pushing using auxiliary parts, pushing, turn over and height adjustments. These worm gear screw lifts are most often used for low speed, low frequency operations. Main components include precise trapezoid screw pairs and highly precise worm gear pairs.

When the screw lift is exposed to larger vibration amounts and impact loads, the self-locking mechanism will eventually no longer work correctly. To prevent this from happening, please add the brake unit.

Applications

· Platform lifting
· Working height adjustment for surface processing machines
· Tilt level adjustment for sliding transmission belts
· Working height modifications for correctors
· Automatic opening and closing for large scale/industrial windows and doors

Technical Parameters

SWL Worm Screw Lift Parameters
Model		SWL1	SWL2.5	SWL5	SWL10	SWL15	SW20	SW25	SW35	SW50
Max. Lift Force (KN)		10	25	50	100	150	200	250	350	500
Screw Rod Thread Size		Tr22x4	Tr30x6	Tr40x7	Tr58x12		Tr65x12	Tr90x16	Tr100x20	Tr120x20
Max. Tensile Force (KN)		10	25	50	99		166	250	350	500
Worm Gear ratio	P	1/6	1/6	1/8	3/32		1/8	3/32	3/32	1/11
Worm Gear ratio	M	1/24	1/24	1/24	1/24		1/24	1/32	1/32	1/32
Screw Rod Stroke/R (mm)	P	0.8	1	0.875	1.565		1.56	1.5	1.875	1.818
Screw Rod Stroke/R (mm)	M	0.21	0.25	0.292	0.5		0.5	0.5	0.625	0.625
Max. elogation of screw rod under tension load (mm)		1300	1500	2000	2500		3000	3500	4000	5500
Max. Lift height under max. pressure load (mm)	Screw head with guiding	220	250	385	500	400	490	850	820	900
Max. Lift height under max. pressure load (mm)	Screw head without guiding	300	400	770	1000	800	980	1700	1640	1900
Worm torque with full load (N.m)	P	15	18	39.5	119	179	240	3660	464	650
Worm torque with full load (N.m)	M	8.3	8.86	19.8	60	90	122	217	253	350
Efficiency (%)	P	20	22	23	20.5		19.5	16	18	20
Efficiency (%)	M	9	11	11.5	13		12.8	9	11	15
Power (KW)		0.25	0.55	1.5	2.6		3.7	4.8	6	7.5
Weight without stroke (Kg)		6.3	7.3	16.2	25		36	70.5	87	95
Screw weight per 100mm (Kg)		0.35	0.45	0.82	1.67		2.15	4.15	5.2	6.35
Lubricant		Synthetic Calcium-sodium base grease ZGN-1 or ZGN-2 (-20℃~+100℃）
Grease Weight (Kg)		0.08	0.1	0.3	0.5		0.75	1.1	1.9	2.2

Features

1. Compact structure, small volume, light weight
2. Extensive power source, no noise, convenient installation
3. Low speed, low frequency: The screw lift is primarily used in heavy load, slow speed and infrequent operation environments.
4. Continuous loading: The trapezoid screw rod features a self-locking function, allowing the machine to continuously load with no need for a brake.
5. Flexible applications, multiple functions, multiple match models, highly reliable, long service life
6. The worm screw lift can be used as a standalone machine or in a production line.
7. The screw lift can accurately control and adjust the height of raising and pushing according to procedural needs.
8. The machine can be driven directly by a motor or other power source, as well as manual operation.
9. We produce different structures and types. The raising height can be customized as per customer requirements.

We offer two structure and mounting types:

Type 1: Axial movement – when the screw rod moves, it can be classified as rotation or non-rotation. Please pay attention to this detail when choosing your model
Type 2: Rotating movement: The nut moves in an axial movement.
Mounting type A: Screw rod or nut to move upwards
Mounting type B: Screw rod or nut moves downward

Instructions

1. When the pressure load is reduced, the rising height will increase.
2. When there is an increase in different loads, allowable torque, power and speed, the maximum powers for different work at continuous rates are different.
3. A screw lift with a screw motion structure that has also been lubricated must also be re-lubricated in the future based on different temperatures.
4. Information found in the parameter sheet are values for screw lifts that use grease lubrication.
5. The lubrication should be quickly changed during working times/
6. Working temperature: -20° - 80°C
7. The screw lift will self-lock in static conditions.

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