Mini Screw Jacks Are Designed for The Adjustment of Process Equipment System, Miniature Precision Lifting Jacks, Light Weight Precision Lifting Jacks

• After-sales Service: Provided
• Warranty: 12 Months
• Type: Mechanical Jack
• Structure: Screw Jack
• Capacity (Load): 1/4 Ton
• Power Source: Manual Operated
• Model NO.: JTC2.5
• Max Height: 10-1500mm
• Certification: CE
• Condition: New
• Structures: Worm Shaft, Worm Screw, Worm Gear, Housing etc
• Worm Screw Sizes: Tr 14 X 4
• Worm Gear Ratios: 1/5, 1/20
• Travel Length: Custom Made, 10-1500mm
• Lift Screw Ends: Top Plate, Clevis End, Thread End, Plain End
• Lift Screw Designs: Translating Screw, Rotating Screw
• Mount Types: Upright, or Inverted
• System Arrangements: Double, or Multiple Mini Screw Jack Systems
• Assembly Drawing: 2D .Dwg, .Dxf Files, 3D. STP, .Step Files
• Transport Package: Paper Box, or 100% Standard Exporting Plywood Case
• Specification: 1/4 ton, 0.25ton, 250 kg, 500lb, 500 pound
• Trademark: JACTON
• Origin: Made in China
• HS Code: 8428909090
• Production Capacity: 8866PCS Per Month

Product Description

Mini Screw Jacks are designed for the adjustment of process equipment system, Miniature Precision Lifting Jacks, Light Weight Precision Lifting Jacks.

Features
1. Upright or inverted installation with maximum static load capacity 2.5 kN (250 kg)
2. Self-locking machine screw with no need brake or lock mechanisms to hold position. 
3. Machine screw diameter 14mm, pitch 4mm (single start acme thread).
4. Available in 5:1 and 20:1 ratios.
5. Customize travel length, max. 1500mm with tension load. 
6. Translating screw (travelling screw jack), keyed screw for anti-rotation (keyed screw jack), and rotating screw (travelling nut screw jack) as the standard configurations.
7. Mini manual screw jack with 125mm diameter handwheel. Option mini electric screw jack with small motor, but can not directly coupled with motor flange, ONLY connection by coupling for foot mounted.
8. Individually mini screw jack use, or mini screw jack lift system, linked by couplings, connecting shafts, mini bevel gearboxes with 1:1 ratio.

Structures and Materials
1. Lifting screw material - C45 steel
2. Worm (input shaft) material - C45 steel
3. Worm gear material - bronze
4. Housing (gearbox) material - ductile iron, or aluminum
5. Traveling nut - bronze  

Specifications
The mini screw jack specifications include maximum load capacity, worm screw diameter and pitch, worm gear ratio, allowable maximum input power, torque and speed and overall efficiency etc. 

1. Conditions: 20% running time/60 minutes or 30% running time/10 minutes, 20 °C ambient temperature. Maximum allowable input power 0.18kw, when your selection is exceed the maximum input power, the operational restrictions due to thermal limits. you will need to choose the bigger size screw jacks in order to allow effective heat dissipation. 
2. H=high ratio 5:1 (0.8mm stroke for one input turn), L=slow ratio 20:1 (0.2mm stroke for one input turn).
3. Nm=input torque required, kW=input power required. 
4. Selection of mini screw jack using above figures should only be carried out in consultation with Jacton engineers.

Assembly Drawings
Find out mini screw jack front view, side view and top view assembly drawings. About 2D Autocad dwg, dxf assembly drawings, and 3D stp, step, model, igs, prt or catpart assembly drawings, please contact us directly.

Today, JACTON Industry is one of the leading companies in developing, manufacturing and supplying Screw Jack, Mini Screw Jack, Screw Lift Mechanism, Worm Gear Screw Jack, Bevel Gear Screw Jack, Ball Screw Jacks, Machine Screw Jacks, Screw Jack Lifting System, Electromechanical Cylinders and Actuators. We know our customers demand our engineering expertise to help find a solution for their applications. We take pride in designing and delivering the best solution using standard or special designs that help improve your business. Best engineered solution for precision linear actuation,power transmission and screw jack jacking systems.

Screw jacks are transmission products (machine screws or ball screws) that make rotary motion using gearbox assemblies (worm gears or bevel gears) and motors. They can be used to push, pull, tension, unlock, tilt, rotate, pull, raise or lower loads ranging from a few kilos to several thousand tons. The key components of screw jacks are trapezoidal lifting screw, worm screw, worm gear and gear housing. Worm screw is rotated manually (manual screw jack) or by a motor (electric screw jack). The screw jack working principle: Worm screw rotate the worm gear; the rotating worm gear move the lifting screw up and down in linear motion way. If input a small rotation force on worm screw, it can amplify force from lifting screw shaft. This mechanical advantage property is good for raising and lowering maintenance platforms, opening and closing air dampers, oven doors, sluice gates, adjusting tooling machine beds.
 

Screw jacks are a combination of a screw with a gearbox. There are three types of configurations that can be adapted to different requirements:

Translating screw design: The screw moves when the gearbox input shaft (worm shaft end) is activated. It includes a rounded screw protection tube on the back.
Anti-rotating keyed screw design: The screw engages, as in configuration translating screw design but with the difference that the screw with milled keyway, or the back protective tube is square section.
Rotating screw design: The screw does not move with the driving of the worm shaft, it only turns; it is the corresponding travel nut that moves along the screw.

Machine Screw Jacks JTW-1T (1 Ton) to JTW-100T (100 Ton)
* Self locking MACHINE screw, precise positioning, and uniform speed. 
* Available in 10 sizes from JTW-1T to JTW-100T.
* Static load capacity from 1 Ton to 100 Ton.
* Machine screw diameter from 24 mm to 160 mm.
* Standard machine screw maximum length 6000 mm, custom longer stroke.
* Upright or Inverted mounting. Available in tension or compression loads.
* Translating, Keyed for non-rotating, and Rotating designs.
* Models JTW-1T to JTW-10T/15T have THREE gear ratios (High ratio, Medium ratio, Slow ratio). Models JTW-20T to JTW-100T have TWO gear ratios (High ratio, Slow ratio). 
* Standard with 1-start machine screw, custom 2-starts machine screw which offers increased travel speed and require a brake or external locking device to hold position.
* Custom-made machine screw diameter and pitch, gear ratios, and worm shaft sizes.
* Machine Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.
* Can be operated by manually operated or by electrical motor driven.
* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.
* Custom-made double clevis screw jack, anti-backlash screw jack.
* Can be used as alternatives to hydraulic and pneumatic systems.
Materials:
* Machine Screw: Carbon steel #45. Custom stainless steel.
* Worm(Input Shaft): Hardened worm, carbon steel #45. Custom stainless steel.
* Worm Gear(Wheel): High strength bronze.
* Travelling Nut and Safety Nut: High strength bronze.
* Housing(Gearbox): Ductile Iron or Stainless steel, available in both of them.

Self-locking ACME Screw Jacks JT-0.5T (0.5 Ton) to JT-100T (100 Ton)
* Self locking Trapezoidal screw, precise positioning, and uniform speed. 
* Available in 12 sizes from JT-0.5T to JT-100T.
* Static load capacity from 0.5 Ton to 100 Ton.
* Trapezoidal screw diameter from 20 mm to 100 mm.
* Standard Trapezoidal screw maximum length 6000 mm, custom longer stroke.
* Upright or Inverted mounting. Available in tension or compression loads.
* Translating, Keyed for non-rotating, and Rotating designs.
* Each Model has THREE gear ratios, they are High ratio, Medium ratio, Slow ratio.
* Standard with 1-start Trapezoidal screw, custom 2-starts Trapezoidal screw which offers increased travel speed and require a brake or external locking device to hold position.
* Custom-made Trapezoidal screw diameter and pitch, gear ratios, and worm shaft sizes.
* Trapezoidal Screw Ends: top plate, clevis end, plain end, threaded end, fork end, rod end.
* Can be operated by manually operated or by electrical motor driven.
* Single unit use, or complete jacking system including gear motors, bevel gearboxes, connecting shafts and couplings for dual or multiple jack arrangements.
* Custom-made double clevis screw jack, anti-backlash screw jack.
* Can be used as alternatives to hydraulic and pneumatic systems.
Materials:
* Trapezoidal Screw: Carbon steel #45. Custom stainless steel.
* Worm(Input Shaft): Hardened worm, carbon steel #45. Custom stainless steel.
* Worm Gear(Wheel): High strength bronze.
* Travelling Nut and Safety Nut: High strength bronze.
* Housing(Gearbox): Ductile Iron

Hand Wheel Manual Screw Jack 1 Ton to 20 Ton
Hand wheels in a variety of diameters. They are recommended for self-locking jacks and actuators and can be mounted directly to the jack input shaft. Since hand wheels are are mounted directly onto jacks and actuators and specified as part of the complete jack part number. Their specific selection is dependent on input torque requirements.
A hand wheel is a convenient solution for manually operating a jack when using machine screw jacks in intermittent positioning applications. Hand wheels are available in a range of diameters from 5 to 16 inches and can be adapted for use on jacks up to the 20 tons capacity model.
NOTE: Hand wheels do not include a brake and therefore are not for use with ball screw jacks. When using hand wheels with a jack that can back drive (12:1 and lower) an additional locking mechanism may be required to prevent "creep".

Electric Motorized Screw Jack 1 Ton to 100 Ton
Screw jacks can be connected directly to an electric motor creating a compact linear drive. Standard 3 phase motors are most common. For lower powers DC motors can be used, or servo motors can achieve high performance.
Electric Screw Jack can also be called motorized screw jack, it includes a worm gear screw jack and an electric motor.The screw jack can be self-locking acme screw jack or high precision ball screw jack.The motor can be high precision servo motor,stepper motor,helical gear motor, worm gear motor, 3-phase asynchronous motor and 12v,24v,48v do motor and dc gear motor etc.
Electric Screw jack lift Function: The Electric screw jack actuator is a basis jack-up part, accomplish the functions such as lifting, drop, push and inverting through worm gear drives screw, because it is driven by electric motor, it has higher efficiency than manual screw jack. 


Screw Jack Lifting System 0.1 Ton to 1000 Ton
Worm Gear Screw Jack systems are ruggedly designed and produced in standard models with load handling capacities from 1 ton to 100 tons. They may be used individually or in multiple arrangements. There are no "standard" travel lengths and all Worm Gear Screw Jack systems are built to specification. The jack housings are made of ductile iron and proportioned to support the rated capacity of the unit. 
Screw Jack System is usually used for lifting heavy duty load or lifting platform. Screw Jack System mainly includes screw jack, bevel gearbox, electric motor, connecting rod coupling, gear reducer. Clients can choose 2 screw jacks system, 3 screw jacks system, 4 screw jacks system, 6 screw jacks system, 8 screw jacks system for your practical application. We can offer a complete screw jack system including electric motor, gear reducer and so on. Before clients place orders, our engineers provide 2D CAD or 3D drawings for final confirmation. Note: When the screw jacks travel stroke is too long, we advise the clients to use a guide post.
Screw Jack System Efficiency
Two screw jacks lift system, I and T configuration,, transmission efficiency 95% 
Three screw jacks lift system, I and T configuration, transmission efficiency 90%
Four screw jacks lift system, H, U and T configuration, transmission efficiency 85%
Six screw jacks lift system, 2H and U configuration, transmission efficiency 80%
Eight screw jacks lift system, 2H and H configuration, transmission efficiency 80%
Notes: don't ignore bevel gearbox efficiency 98%.

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.

Company Profiles
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, Electric Linear Actuators, Gearmotors and Speed Reducers, Others Linear Motion and Power Transmission Products in China. We are located in Chang An, Dong guan, Guang dong in China. We are an audited professional manufacturer and supplier by SGS (Serial NO.: QIP-ASI192186) and BV (Serial NO.: MIC-ASR202862) organizations. We have a strict quality system, with senior engineers, experienced skilled workers and practiced sales teams, and consistently provide the customers with the best engineered solution for precision linear actuation, power transmission and mechanical jacking systems. Jacton Industries guarantees quality, reliability, performance and value for today's demanding industrial applications.

Company Advantages
* One of the biggest orders with 1750 units screw lift jacks.
* Standard products with 2D Drawings(DXF, DWG, PDF) and 3D CAD Model(STEP).
* 100% quality assured with double quality inspections. Original Inspection Reports, Operation Manual, and Book Catalogue are put into the packages.
* 100% safety transportation with strong standard export plywood cases materials (free fumigation).
* International standard materials for all standard products.
* Custom design available, OEM service available, Free engineering advice and Customer label available.

Products List
* Manual Screw Jacks
* Electric Screw Jacks
* Screw Jacks Series:
Cubic Screw Jack JTC Series, Machine Screw Jack JTW Series, Trapezoidal Screw Jack JT Series, Worm Screw Jack JTM Series, Stainless Steel Screw Jack JSS Series, Through Hole Screw Jack JTH Series, Ball Screw Jack JTB Series, Cubic Ball Screw Jack JTD Series, Bevel Gear Screw Jack JTS Series and JTG Series, and Electric Cylinder JTE Series.
* Bevel Gearboxes Series:
Cubic Bevel Gearbox JTP Series, Hollow Shaft Gearbox JTPH Series, Input Flange Gearbox JTPF Series, Input Flange and Hollow shaft Gearbox JTPG Series, Stainless Steel Gearbox JTP Series, Aluminum Gearbox JTA Series, and Bevel Gearboxes JT Series.
* Screw Jack Lifting Systems and Accessories:
2jacks lifting system, 3jacks lifting system, 4jacks lifting system, 6jacks lifting system, 8jacks lifting system......14jacks lifting system. Lifting systems accessories cover ac, dc motors, geared motors, servo motors, stepper motors, handwheels, couplings, universal joints, telescopic universal joints, connecting shafts, cardan shafts, limit switches, proximity switches, safety nut, travel nut, rod ends, stop nuts, pillow block bearings, flange blocks, motor flange nema or iec, encoder, potentiometer, frequency converter, position indicators, trunnion plate, and trunnion mounting brackets.
* Electric Linear Actuators Series:
Electro Mechanical Actuators LA Series, Electro Mechanical Actuators LAP Series.
* Gear Reducers Series:
Helical Gear Reducers R Series, Helical Bevel Gear Reducers K Series, Parallel Shaft Helical Gear Reducers F Series, Helical Worm Gear Reducers S Series, Helical Gear Motor GMH/GMV Series, and Worm Gear Reducers NMRV Series.

Customers Distribution Countries
* American Countries: United States, Mexico, Canada, Chile, Argentina, Bolivia, Brazil, Colombia, Guatemala, Honduras, Panama, Peru.
* European Countries: Germany, France, United Kingdom, Italy, Spain, Poland, Romania, Netherlands, Belgium, Greece, Czech Republic, Portugal, Sweden, Hungary, Austria, Switzerland, Bulgaria, Denmark, Finland, Slovakia, Norway, Ireland, Georgia, Slovenia.
* Asian Countries: Malaysia, Indonesia, Singapore, Philippines, Vietnam, Thailand, India, Israel, Cambodia, Myanmar, Sri Lanka, Maldives, Pakistan, Iran, Turkey, Jordan, Saudi Arabia, Yemen, Oman, United Arab Emirates, Qatar, Georgia, Armenia.
* Oceanian Countries: Australia, New Zealand.
* African Countries: Egypt, Ethiopia, Nigeria, South Africa, Zambia, Mozambique.