China top Hand Operated Screw Jack Maunfacturer,we supply best Hand Operated Screw Jack for Crank Table,size can be customized,all types of hand crank screw jacks at factory price. The working principle of the hand operated worm gear screw jack is that the worm (also called the input shaft) is manually rotated by the hand wheel, the worm wheel is rotated by the worm, and the trapezoidal lifting screw is moved by the rotating worm wheel. The linear motion speed of the worm wheel manual screw jack trapezoidal lifting screw depends on the thread size and the worm gear speed ratio.
Jack Lifting Screw Lift Tables Hand Crank Lift Systems Lifting Device Hand Crank Table Lift Desk Manual Lift Table. Which includes 2.5 ton screw mechanisms two lifting points, 5 ton screw mechanisms two lifting points and 2.5 ton screw mechanisms four lifting points. It is not recommended small sizes 0.5 ton or 1 ton screw mechanisms two lifting points. Jacton screw mechanisms have self-locking function, don't require any lock mechanism, they will hold and stop any position without turning hand crank.
Two lifting points 2.5 ton crank table screw lift mechanismare consist of two pieces 2.5 ton screw mechanisms that support and adjust the crank table top height, two pieces 200mm diam. cast iron crank handles, two pieces couplings and one connecting rod.
* S: lifting height, standard 8", 10", 12", 14", 16", 18", 20". Option customize height.
* D: hand wheel diameter, standard 8", Option 10" and 12".
* d: connecting shaft diameter, standard 1".
* L1: connecting shaft length, L1 = L2 - 111 - 111, standard L1=36", 43", 48", 52", 60".
* L2: center distance between screw and screw, L2 = L1 + 111 + 111
* Unpainted with steel color, black color, and blue color as standard.
Two lifting points 5 ton crank table screw lift mechanism are consist of two pieces 5 ton screw mechanisms that support and adjust the crank table top height, two pieces 300mm diam. cast iron crank handles, two pieces couplings and one connecting rod. Unpainted with steel color, black color, and blue color as standard.
* S: lifting height, standard 8", 10", 12", 14", 16", 18", 20". Option customize height.
* D: hand wheel diameter, standard 10", 12".
* d: connecting shaft diameter, standard 1.2".
* L1: connecting shaft length, L1 = L2 - 130 - 130, standard L1=36", 43", 48", 52", 60".
* L2: center distance between screw and screw, L2 = L1 + 111 + 111
* Unpainted with steel color, black color, and blue color as standard.
Four lifting points 2.5 toncrank table screw lift mechanism are consist of four pieces 2.5 ton screw mechanisms that support and adjust the crank table top height, two pieces 300mm diam. cast iron crank handles, four pieces couplings, two connecting rods and four gears. Unpainted with steel color, black color, and blue color as standard.
* S: lifting height, standard 8", 10", 12", 14", 16", 18", 20". Option customize height.
* D: hand wheel diameter, standard 8", Option 10" and 12".
* d: connecting shaft diameter, standard 1", option 1.2".
* L2: center distance between screw and screw, standard L1=48", 52", 60", 64", 72", 96".
* Painting: bule, black, grey, unpainted with steel color.
* Unpainted with steel color, black color, and blue color as standard.
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 brand products. We insist on choosing brand suppliers to supply the high quality raw materials to control the producing process. Optimization constantly the production processes, inspecting in each link and managing production site.
2. 100% quality assured with double quality inspections. The quality inspection by quality inspectors from processing to finished products as the first time. Before packing, the corresponding sales engineers must inspect the orders following the paper drawings, order quantities and special markings in the invoice or sales contracts as the second time. After that, fill in the inspection report with signature and company stamp.
3. 100% safety transportation. Packing with strong standard export plywood cases materials (free fumigation), inner packing with epe foams to prevent products swaying and outer packing with iron sheets and fasteners to fasten the packages.
4. Internationl sales engineers have professional knowledge and skills on our standard products and service. They have enough ability to solve the basic technical problem immediately whatever by phone, online chat, face to face communications.
5. All the standard products with 2D CAD Drawings (PDF, DWG and DXF formats), and 3D CAD Models (STEP, STP, MODEL, IGS, PRT and CATParT formats).
6. Custom design available, OEM service available, Free engineering advice, Free quotes available and Customer label available.
7. Inspection equipments include motor with inverter drive system, height adjustmemt motorized lifting system, coordinate measuring machines, outside micrometers, inside micrometers, depth calipers, vernier calipers, digital calipers, hardness testers, digital noise meters, industrial infrared thermometers, digital speed measuring instruments, digital multimeters, and high precision clamp digital ammeter etc.
8. Processing with modern advanced machines such as CNC gear hobbing machines, CNC flank grinding machines, CNC cylindrical grinding machines, multi-axis CNC milling machines, CNC lathes and others equipments.
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 Dongguan JACTON Industry Co.,Ltd (VAT No.: 9144190007026567X3, registered Capital 500000CNY) is a leading manufacturer and supplier of screw jacks (mechanical actuators), bevel gearboxes, lifting systems, linear actuators, gearmotors and speed reducers, and others linear motion and power transmission products in China. 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): http://screw-jacks.en.made-in-china.com Website (English): https://screw-jacks.en.made-in-china.com Website (Chinese): https://screw-jacks.en.made-in-china.com
Audited Supplier 
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