Steel screw jacks worm gear lift self locking jack screw
Steel screw jacks worm gear lift self locking jack screw
1. Screw Jack Picture & Function:
Screw jack/lift is a basis jack-up part, accomplanish the fuctions such as lifting, drop, push and inverting through worm gear drives screw.
2. Our Jack's Advantages:
-Self-locking ability
-Can be driven directly by motor or other power or manual
-Can be customized according user's demand
-Compact configuration, small size, lightweight
-Convenient installation, flexible operation
-High reliability and stability
-2 / 3 /4 /8 sets etc. screw jacks to linkage to use ( For screw jacks linkage scheme, pls see the below)
3.Screw Jack Part Introduction:
4. How to Choose a Screw Jack? Some questions you need answer pls.
Q1: The capacity is to load ? KG (it means how many Kg or Tons the screw jack need to lift or drop?)
The stroke is ? mm (it means the screw shaft length, such as 500mm)
The lifting speed is ? mm/second (it means how much time you want to use to finish the stroke? Such as I want to use 20 seconds to finish the 500mm stroke then can come out the speed is 25mm/s )
Screw jack SWL2.5-120 performance parameters table as the below:
| 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 | 6 | 7 | 8 | 10 | 10 | 10 | 12 | 12 |
| Worm Ratio M | 24 | 24 | 23 | 24 | 32 | 32 | 32 | 36 | 36 |
| 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 | 0.25 | 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 |
Q2: Which the screw top you need? Answer: I need (A B C D E F).
Q3: Manual type (Hand wheel driven) or electric motor driven type? Answer: I need type.
Q4: Screw movement (screw travelling up and down when working) or Nut movement (the nut travelling up and down when working)? Upright or Inverted? Answer: I need (A B E F)
Q5: Screw jacks linkage
Do you need two or above two sets screw jacks to linkage, if yes pls see the below screw jacks linkage scheme, if no pls ignore this.
Answer: 1. No need 2. Need, sets (2 /3 /4 /8 or other sets) screw jacks to linkage, ( I /T / L / H / U) )type ( Or you can mark it out on the below screw jacks linkage scheme picture).
For example, a 4-sets linkage H type ( without screw in this picture) as followIing:
After we got your answers we can make a CAD format drawing for you to check and quote you the best price.
5. Screw Jack's Application:
Screw jack is applied to all fields for lifting or pulling, such as Aircraft maintenance platform, Solar plate, machinery, metallurgy, water conservancy, medical treatment, chemical industry, culture and hygienist etc.
1. Payment:
We accept T/T, Credit Card (VISA or MasterCard), L/C, Paypal, Alibaba Trade Assurance (this service can guarantee the clients' benefit to utmost) etc.
2. Package:
1. Common package: PE bags with bubble, carton box then bubble then plywood box, safe package.
2. According to clients' special requirements.
3. Shipping:
1. Sea transportation: shipping FCL or shipping LCL, this is the most common way
2. Land transportation: this is suitable for the inland countries
3. Air transportation
4. Express: DHL,TNT,UPS,Fedex etc.
Looking forward to your inquiry,and we'll give you reply within two hours!
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