SWL Series Hand Wheel Worm Gear Screw Jack for Lifting Equipment
A hand crank screw jack(SWL Series Hand Wheel Worm Gear Screw Jack) is composed of a hand wheel or hand crank and a worm gear screw jack, which has intermittent precise positioning and a self-locking feature for no creeping down without a brake mechanism or other locking systems. When manual ball screw jack, no self-locking feature, avoid ball screw back drive with attached load, which needs additional brake mechanism or other locking system to prevent it creep. A manual screw jack is an ideal solution for applications where electricity or power generators are inconvenient or dangerous, lightweight, have low duty cycle, have low target cost, and have short travel lengths.
Worm Gear Screw Jack Structural Types
| Structural form | Type Ⅰ: axial movement of the screw rod | Type Ⅱ: the screw rod rotates and the nut moves axially |
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| 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) |
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| 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) |
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Hand Wheel Worm Gear Screw Jack Model Nomenclature:
| e.g. SWL 2.5 M-1 A-Ⅱ-500 FZ | |||||||
| SWL | 2.5 | M | 1 | A | Ⅱ | 500 | FZ |
| worm gear screw jack | bearing capacity(25kN) | ratio code | structural form code | structure | assembly form | screw stroke(mm) | Protection from code |
Hand Wheel Worm Gear Screw Jack Parameters:
| Model | 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 |
| 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 |
| 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 | |
Hand Wheel Worm Gear Screw Jack Parts:
The worm gear screw jack housings are made of ductile iron and proportioned to support the rated capacity of the unit. models have aluminum housings. This worm gear screw jack incorporates an alloy steel worm which drives a high-strength bronze worm gear ( drive sleeve ). The worm shaft is supported on anti-friction tapered roller bearings with external seals provided to prevent loss of lubrication. The drive sleeve is supported on the anti-friction tapered roller or ball thrust bearings. rotation of the drive sleeve causes the lifting screw to translate or rotate, depending upon the jack configuration.
The working principle of the hand wheel worm gear screw jack is that the worm ( also called the input shaft ) is manually rotated by the hand wheel. the worm wheel (also called the worm gear ) is rotated by the worm, and the trapezoidal lifting screw is moved by the rotating worm wheel.
Hand Wheel Worm Gear Screw Jack 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. It has a self-locking function and can hold up the load without the braking device.
4. Top End: top plate, clevis end, threaded end, plain end
5. Widely applied in industries such as machinery, metallurgy, construction, and hydraulic equipment.
6. Enjoy many functions such as lifting, pushing, and turning.
7. Enjoy features of compact structure, small volume, light weight, wide drive sources, low noise, high reliability, and long service life.
8. Easy to be mounted, and flexible in use.
9. Accurately control the height of lifting or pushing.
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Customized Worm Gear Screw Jack
We are the factory with the ability to customize the worm gear screw jack to your specific requirements for your application. Please share detailed information including your use scenario, required loading capacity, reduction ratio, power source, stroke length, and other requests. Our sales and technical team will provide solutions and drawings for your confirmation.
Worm Gear Screw Jack Model Selection Guide:
Step 1: select the corresponding model according to your load capacity requirements,
Step 2: confirm the reduction ratio: 1/6, 1/12, or 1/24. If you need a special speed ratio, please contact our sales team.
Step 3: Determine the head form of the screw, there are cylinder type, nut type, flange type, thread type, and flat head type for your option.
Step 4: confirm the screw length or stroke you need. The default stroke is 500mm, and the screw length can be customized according to different needs.
Step 5: confirm the accessories you need, such as matching motors, hand wheels, protection tubes for screws, dust cover, anti-rotation functions, nuts, etc.
Contact us now to get your customized worm gear screw jack.
Professional Worm Gear Screw Jack Manufacturer
With over 20 years of professional manufacturing experience, our specialized workers always produce worm screw lift with refined craftsmanship and consistent quality. Whether working on large volume orders or simply 1 set, our standardized production process makes sure you get the same level of high-quality worm jacks at a short lead time.
- Well-trained Staffs
- Extensive Manufacturing experience
- Fully-equipped Production Workshop
- Well-established manufacturing standard
FAQ
Q1: What’re your main products?
A1: High Precision Planetary Gearbox; Hollow Rotating Platform; Agricultural Gearbox; Worm Gearbox; Worm Gear Screw Jack; R/K/F/S Helical Gearbox.
Q2: What industries are your gearboxes working in?
A2: Gearboxes are widely working in the areas of robotics, textile, food processing, beverage, chemical industry, escalator, automatic storage equipment, metallurgy, environmental protection, logistics, etc.
Q3: Can you offer OEM or ODM service?
A3: Yes, we are a professional manufacturer, so we can do customized orders.
Q4: How to choose a model?
A4: We have one-one service team for model selection, and we can provide CAD drawings and 3D models in 5 minutes with technical information on required output torque, output speed and motor parameters, etc. So just contact us.
Q5: What information shall we give before placing a purchase order?
A5: We understand your needs from the following information:
a) Type of the gearbox, ratio, input and output type, input flange, mounting position, motor information, etc.
b) Housing color.
c) Purchase quantity.
d) Other special requirements.
Q6: How long is the delivery time?
A6: Most planetary gearboxes are in stock. 7 working days for the worm gearbox and worm gear screw jack, and 15 working days for the R/K/F/S helical gearbox.
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