ScrewActuator

Characteristics of Screw Actuator
1.1 Screw actuator is a kind of basic lifting component that can accurately control and adjust the lifting or impelling height according to a certain procedure. 1.2 It can be driven by electric motor or other motive power. Manual operation is also available.1.3 Our screw actuator is compact in structure, small in size, light in weight, easy to install and use, noiseless, highly reliable and durable.
1.4 SWL worm screw actuator is widely used in machinery industry, metallurgy, building industry, and water conservancy projects, etc. It can also be matched with other devices to carry out impelling, overturning or other functions.
1.5 It is various in structural styles and assembly types.
1.6 Besides, your special requirement on hoisting height can be satisfied.

Types,SpecificationsandRepresentation

2.1Structuralstyle
1typerepresentsthatscrewmakesaxialmovement.
2typemeansthatscrewmakesrotarymotionandthatscrewnutmakesaxialmovement.
2.2Assemblytype
Atypeindicatesthatscreworscrewnutmovesupwards.
Btypeshowsthatscreworscrewnutmovesdownwards.
2.3Screwheadtype
Screwheadtypeof1typestructuralstyleincludesItype(cylindertype),IItype(flangetype),IIItype(screwtype),type(flatheadtype).
Screwheadtypeof2typestructuralstyleincludesItype(cylindertype)andIIItype(screwtype).
2.4Transmissionratio
GeneralspeedratioisexpressedasPandslowspeedratioisexpressedasM.
2.5Liftingcarryingcapacity
Theliftingcarryingcapacitycanbe2.5,5,10,15,20,25,35(10kN).
2.6Screwprotectionstyle
For1type,therearebasictypescrewactuators,anti-rotatingtypescrewactuators(F)andscrewactuatorswithprotectioncover(Z).
For2type,therearebasictypescrewactuatorsandscrewactuatorswithprotectioncover(Z).

2.7Representation

Screwprotectiontypedesignation(basictypewillbeignored)
mmScrewjourney(mm)
Screwheadtypedesignation
Assemblytypedesignation
Structuralstyledesignation
PTransmissionratiodesignation(generalPwillbeignored)
25kN,2.5Carryingcapacity(25kN,equivalentto2,5ton)

Wormscrewactuator

MainSpecificationsofWormScrewActuator

LiftingForceandHoistingSpeedChart

Note
The parameters above are obtained in the condition that the working temperature is 20 and that the working continuous rate is 20% per hour or 40% per minute.
When the rotary speed is faster than the rotary speed listed in the table, the lifting elements will turn up early wear because of overheat, so users should pay more attention to the rotary speed while using the worm screw actuators.

TheRelationshipbetweenScrewRodLengthandLimitLoad

1Diagram12Diagram23Diagram34Diagram4

ScrewrodlengthEulerloadLiftingforce

IntroductiontotheModelingofScrewActuator

You can find out the type of your desired screw actuator according to the screw journey and lifting load indicated in diagram 1-diagram 4, and then check whether the lifting speed meets your requirement according to Lifting Force and Hoisting Speed Chart.

For example

Given that the lifting load F is 20KN, that the screw journey is 400mm, and that the lifting speed V is 0.65m/min, we can find out the suitable screw actuator as follows:

Based on given lifting load and screw journey, we refer to diagram 2 and select the SWL5 screw actuator. While in Lifting Force and Hoisting Speed Chart, the allowable speed of SWL5 screw actuator is 0.526m/min when the lifting force is 20KN. So we have to re-choose from large size screw actuators and check whether their allowable speed meet the requirement. In this way, we will find out that the allowable lifting speed of SWL10 screw actuator is 1.4m/min when the lifting force is 20KN. Thus, SWL10 screw actuator is the one we are looking for.

Directions

1.The hoisting height will increase with the decrease of pressure load. For more details, please refer to diagram 2- diagram 4.
2. When different loads are lifted, the allowable torque, power and rotary speed are different. Meanwhile, the maximum power of different working continuous rate is different.
3. 1 type screw actuator adopts grease lubrication. Lubricant should be added with the rising of temperature.
4. The efficiency in the table is the parameter obtained in the case of grease lubrication.
5. The lubricant should be replaced in time during the working period.
6. The working temperature is -20~+80.
7. The worm screw actuator has self-locking function and will lock automatically when it does not work.

Thank you for visiting our website.
As a professional screw actuator manufacturer in China, we can provide not only screw actuators, but also gear boxes, worm gear reducers, gate operators, couplings, etc. These products are of high quality and low price. They sell well in America, Italy, Germany, England, Spain, Australia, Singapore and more.
Please do not hesitate to contact us if you want to get more information about our screw actuators or other products. We believe that you will be satisfied with our products and services.