How Is The Maximum Screw Length Determined for Jacks and Actuators? What Is The Maximum Raise or Working Stroke for a Screw Jack? Worm Gear Screw Jacks Design.

• Customization: Available
• Application: Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Lifting and Positioning
• Type: Worm Reducer
• Transport Package: Standard Exporting Plywood Cases
• Trademark: JACTON
• Origin: Made in China
• HS Code: 8428909090
• Production Capacity: 6000PCS Per Month

Product Description

How Is The Maximum Screw Length Determined for Jacks and Actuators? What is the Maximum Raise or Working Stroke for a Screw Jack? Worm Gear Screw Jacks Design.

Maximum distance from the base of the jack to the end of the extended screw. It is limited by the column load in compression. Refer to column load charts. 

Generally, standard strokes / raises are:
Up to 1000mm on 5kN screw jacks
Up to 2500mm on 10kN screw jacks
18 inches on 1/4 ton screw jacks
40 inches on 1/2 ton screw jacks
98 inches on 1 ton screw jacks
2500mm on 25kN and above screw jacks
215 inches on 2 Ton and above screw jacks
Larger Screw Jacks have their maximum raise / stroke available limited only by the available length of bar stock from suppliers (note - special steel production runs can be organised for special applications) and the practical ability to handle, machine and transport the lead screw and the complete screw jack. Practical lengths will also be affected by whether the screw is to be subjected to compression or tension loads. Depending on diameter the length can be limited due to deformation of material in the machining process or column strength of the screw when subjected to compression loads.

Long raise applications should be checked with Jacton Jacks for the following:a) Side loads on extended screw.b) Column strength of screw.c) Thermal rating of screw and nut.Power Jacks recommend guides be used on all applications. The longer the raise, the more important this becomes.







Important Note: The original actual pictures, videos, designs and molds came from the audited manufacturer and supplier - JACTON Industry Co.,Ltd. Don't copy the pictures, videos, models, designs and drawing dimensions without JACTON permission.

Shipment and Packing Pictures 
Shipping:
1. Ocean freight: seaport to seaport, price terms CIF, FOB, EXW, CFR etc.
2. Air freight: airport to airport, price terms EXW, CRF etc.
3. Air courier: DHL, FEDEX, UPS, TNT door to door shipment, price terms DDU, CPT etc.

Packing: 
100% standard exporting plywood cases. 
Note: International Exporting Standard Wooden Material with Free Fumigation.


JACTON Advantages
1. International standard materials for All JACTON products. 
2. 100% quality assured with double quality inspections.
3. 100% safety transportation with strong standard export plywood cases materials (free fumigation).
4. Internationl sales engineers have professional knowledge and skills on our standard products and service.
5. All our standard products with 2D CAD Drawings and 3D CAD Models.
6. Custom design available, OEM service available, Free engineering advice and Customer label available.


Finished Projects
1. Theatrical solutions stage and orchestra platform lifts projects. Customers are from France, Australia, Netherlands, United Kingdom, Spain and Canada. 
2. Hydroelectric power station projects and water conservancy projects. Customers are from Vietnam, Australia, Malaysia, Russian Federation, Nepal, Pakistan, Belgium, United States and United Kingdom. 
3. Aircraft maintenance platforms and docking systems projects. Customers are from Pakistan, Singapore and United Arab Emirates.  
4. Solar panel tracking system projects. Customers are from Spain, India and Canada. 
5. Bolted steel storage tanks and silos lifting solutions. Customers are from South Africa, United States, Mexico, Russian Federation, Brazil and Vietnam. 
6. Dish antenna elevation and azimuth positioning projects. Customers are from Singapore, Malaysia and United States. 
7. Railway wagon projects. Customers are from South Africa. 
8. Beverage can production lines. Customers are from Netherlands, United States, Thailand and Indonesia. 
9. Steel factories production lines. Customers are from Iran, United States and Turkey. 
10. Continuous PU sandwich panel production lines. Customers are from Thailand and United Kingdom.  


JACTON Customers Areas(Countries)
1. American Countries: United States, Mexico, Canada, Chile, Bolivia, Brazil, Colombia, Dominican Republic, Honduras, Costa Rica, Panama, Puerto Rico, Jamaica, Trinidad and Tobago, Aruba, Argentina, Peru, Venezuela.
2. European Countries: Russia, Germany, Turkey, France, United Kingdom, Italy, Spain, Ukraine, Poland, Romania, Netherlands, Belgium, Greece, Czech Republic, Portugal, Sweden, Hungary, Belarus, Austria, Switzerland, Bulgaria, Denmark, Finland, Slovakia, Norway, Ireland, Croatia, Georgia, Armenia, Lithuania, Slovenia, Estonia, Cyprus, Luxembourg, Iceland.
3. Asian Countries: Malaysia, Indonesia, Singapore, Pakistan, Philippines, Vietnam, United Arab Emirates, Thailand, Saudi Arabia, Iran, Turkey, India, Nepal, Yemen, Taiwan, Sri Lanka, Israel, Jordan, Kuwait, Qatar.
4. Oceanian Countries: Australia, New Zealand, Fiji.
5. African Countries: South Africa, Egypt, Ethiopia, Nigeria, Kenya, Tanzania. 


JACTON Products List
1. Manual Worm Gear Screw Jacks, Electric Worm Gear Screw Jacks.
2. Worm Gear Screw Jacks Series: JT series acme screw jacks, JTC series cubic screw jacks, JTW series machine screw jacks, JTM series worm screw jacks, JTB series ball screw jacks, JTD series cubic ball screw jacks, JSS series stainless steel screw jacks, JTS series bevel gear screw jacks, Non-standard series screw jacks. 
3. Spiral Bevel Gearboxes Series: JT series bevel gearboxes, JTP series cubic bevel gearboxes, JTA series aluminum bevel gearboxes, JTH series hollow shaft bevel gearboxes, BSS series stainless steel bevel gearboxes.  
4. Screw Lifting Systems and Systems Accessories: two-jacks systems, three-jacks systems, four-jacks systems, six-jacks systems, eight-jacks systems. Accessories cover couplings, universal joints, cardan shafts, connecting shafts, electric motors, geared motors and reducers, hand wheel with crank handles, pillow block bearings, flange block bearings, rod end bearings, stop nuts, limit switches, safety nut, travel nuts, linear shafts and bearings, linear guides and bearings, telescopic spring covers, bellows boot, protective tube, trunnion adapter plates, trunnion mounting brackets, motor flanges, rotary encoders, potentiometers, frequency inverters and position indicators etc.
5. Heavy Duty Linear Actuators Series: Parallel heavy duty linear actuators, In-line heavy duty linear actuators.
6. Geared Motors and Speed Reducers Series: helical gearmotors R series, helical bevel gearmotors K series, parallel shaft helical gearmotors F series, helical worm gearmotors S series, small AC gear motor series and worm gear motor reducer series.


Contact Information
JACTON Industry Co.,Ltd (VAT No.: 9144190007026567X3, registered Capital 500000CNY) is a leading manufacturer and supplier in China. JACTON products include worm gear screw jacks, manual screw jacks, electric screw jacks, machine screw jacks, stainless steel screw jacks, custom made screw jacks, ball screw jacks, spiral bevel gearboxes, right angle gearboxes, worm screw jack systems and accessories, heavy duty linear actuators, gearmotors and speed reducers, linear motion products and power transmission products. We are Alibaba, Made-In-China and SGS (Serial NO.: QIP-ASI192186) audited manufacturer and supplier. We also have a strict quality system, with senior engineers, experienced skilled workers and practiced sales teams, we consistently provide the high quality equipments to meet the customers electro-mechanical actuation, lifting and positioning needs. Jacton Industry guarantees quality, reliability, performance and value for today's demanding industrial applications.
Website (English): screw-jacks.en.made-in-china.com
Website (English): screw-jacks.en.made-in-china.com
Website (Chinese): screw-jacks.en.made-in-china.com