What Is Duty Cycle for Screw Jacks and Actuators? What Is The Allowable Duty Cycle of a Worm Gear Screw Jack? How to Calculate The Duty Cycle for Screw Jack?

• Application：Motor, Electric Cars, Motorcycle, Machinery, Marine, Toy, Agricultural Machinery, Car, Lifting and Positioning
• Hardness：Hardened Tooth Surface
• Installation：Vertical Type
• Layout：Coaxial
• Gear Shape：Worm Gear
• Step：Single-Step

=== Base Info ===

• Model NO.：250 KG to 100-Ton
• Type：Worm Reducer
• Transport Package：Standard Exporting Plywood Cases
• Trademark：JACTON
• Origin：Made in China
• HS Code：8428909090
• Production Capacity：3500PCS Per Month

=== Description ===

Basic Info.

Model NO. 250 KG to 100-Ton Type Worm Reducer Transport Package Standard Exporting Plywood Cases Trademark JACTON Origin Made in China HS Code 8428909090 Production Capacity 3500PCS Per Month

Product Description

What Is Duty Cycle for Screw Jacks and Actuators? What is the Allowable Duty Cycle of a Worm Gear Screw Jack? How to Calculate the Duty Cycle For Screw Jack?

Because of the efficiency of metric worm gear screw jacks, the duty cycle is intermittent at rated load. At reduced loading, the duty cycle may be increased. The high performance worm gear ball screw jacks have higher thermal efficiencies due to their design allowing generally 50% higher duty cycles than conventional worm gear machine screw jacks. 

Screw Jacks Duty Cycle Calculation Formula:
Calculation Formula %ED: ED=work time in one load cycle / (work time in one load cycle+rest time in one load cycle).
1. Machine screw: the unit of %ED for single screw jack is 1 minute duty cycle max. 40%ED; 10 minutes duty cycle max. 30%ED; 60 minutes duty cycle max. 20%ED.
2. Ball screw: the unit of %ED for single screw jack is 10 minutes duty cycle max. 50%ED; 30 minutes duty cycle max. 30%ED; 60 minutes duty cycle max. 20%ED.




Duty cycle is the proportion of time during which a component, device, or system is operated. The duty cycle can be expressed as a ratio or as a percentage. Suppose a disk drive operates for 1 second, then is shut off for 99 seconds, then is run for 1 second again, and so on. The drive runs for one out of 100 seconds, or 1/100 of the time, and its duty cycle is therefore 1/100, or 1 percent.

The more a circuit, machine or component is used, the sooner it will wear out. Therefore, the higher the duty cycle, the shorter the useful life, all other things being equal. If the above-mentioned disk drive has a life expectancy of 1,000,000 hours based on a 1 percent duty cycle, that same device's expectancy would probably be about 500,000 hours based on a duty cycle of 2 percent, and 2,000,000 hours based on a duty cycle of 0.5 percent.

Typical maximum duty cycles for standard machine screw jacks are between 20 and 40%.  When calculated with shorter running times over a 10 minute period duty cycles are 30-40% dependent on model.  For longer running times a 60 minute period is used and duty cycles are 20-30%. Where higher duty cycles are needed, there are two options.
-oversize the screw jack so that the power required compared to the maximum power gives a factor that can increase the permissible duty.
- select a worm gear ball screw lift available in the range 5kN to 400kN.  These have higher efficiency and duty cycles of 70-100% are possible. 

Choose JACTON Industry's screw jacks for specific application, duty cycle should be a consideration data. Ball screw jacks are often chosen for their efficiency, allowing for an increased duty cycle and a smaller size jack to move a given load.



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 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 Screw Jacks, Electric Screw Jacks.
2. 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. 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. 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. Electric 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 of Screw Jacks (Mechanical Actuators), Bevel Gearboxes, Lifting Systems, Electric 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): 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