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Diameter 8mm Lead 12mm Pitch 3mm Tr8x12 Trapezoidal Lead Screw

Excellent service
Quality assurance
Customized service
Fast delivery:5~10 days
  • Tr8x12

  • ALM

  • 8483900090

Diameter 8mm Lead 12mm Pitch 3mm Tr8x12 Trapezoidal Lead Screw.ACME screw has a thread angle of 29°and is manufactured in inch size.Acme screw size is usually specified by the screw shaft diameter and the number of threads per inch or TPI.Trapezoidal screws also use the trapezoidal screw form of lead screw,but the trapezoidal screw thread angle is 30° and manufactured in metric size.The size of the trapezoidal screw is specified by the shaft diameter of the screw and the pitch of the screw thread.Trapezoidal screws are sometimes called "metric screw" or "metric ACME screw".

Lead screw model Diameter 8mm,Lead 12mm,Pitch 3mm
Tr8x12 Lead screw material ASTM1045,SUS303,SUS304,SS316,SS316L
Tr8x12 Lead nut material Brass,Tin bronze,Phosphor bronze,Aluminum bronze,POM,PEK,nylon,POK,Stainless steel,1045,Zinc alloy,Brass+Plastic,Aluminum alloy+Plastic,Brass+Steel,Self lubricating(No oil type)
Tr8x12 Lead screw quality standard ISO2901-4,DIN103
Tr8x12 Lead screw clearance 7e,higher precision is available upon request
Lead Screw Parameter

A broad range of lead nuts are available,other nut type or size can be made upon drawing

When selecting the right nut for an application,there are a few things to keep in mind.Bronze nuts provide superior service at high working loads.They should be well lubricated with a good quality,Extreme Pressure(EP)grease compatible with the operating environment.Plastic nuts can be used without lubrication and are popular for low load applications.

ALM lead screw

Other ready lead screw models are available

lead screw dimension

Our Advantages
Free service Performance testing
Selection of auxiliary
Technical solution
Please contact the salesman for details

what you can get from ALM

Custom service

Stainless steel and other customized materials
Surface treatment
Custom lead nut and shaft end machining
Maintenance and assembly
Replace grease
Please contact the salesman for details
Lead Screw Applications

lead screw application

lead screw

Comparison Between Lead Screw And Ball Screw

1.Features and advantages:compared with ball screw,lead screw cost is lower,from the material,nut specification and shape,lead screw diameter and lead in the design modification more diversity,to meet customer needs.

2.Vibration and noise:The lead screw is made of various wear-resistant,temperature-resistant,self-lubricating,maintenance-free materials,long-life composite engineering plastics and anti-backlash nuts.Lead screw will not cause vibration,noise is lower than ball screw.

3.Operating environment requirements:Lead screw assemblies are less stringent to dust contamination through surface treatment and the use of engineering plastic nuts than ball screws.

4.Structure and weight:lead screws use a variety of structural styles and material nuts,so that the design structure and weight of nuts are light and easy to install.

5.Design load and application:Rolled lead screw assembly can be used in high,medium,light load in vertical and horizontal applications,automatic and manual adjustment of a variety of patented backlash nuts using thread or flange installation.Provide an effective cost solution.

6.Lubrication:lead screw can use a variety of wear-resistant,temperature resistant,self-lubricating,maintenance-free and long life composite engineering plastic nuts and screw with solid lubrication coating,correct lubrication must achieve satisfactory working life.Special grease for molybdenum disulfide lead screw(spray)is recommended for use in long fine rod assembly applications.The lead screw assembly needs to be lubricated frequently to keep a uniform layer of lubricant on the lead screw at all times.The lubrication interval is determined according to the actual application condition.Note:CJ composite engineering plastic nuts are self-lubricating and non - lubricating.For maximum life,it is recommended to use an initial coating lubricant.


7.Efficiency:Efficiency increases with the increase of the lead,except for particularly large leads.Although lead screws with self-lubricating composite engineering plastic nuts have very low friction coefficient and excellent lubrication performances.Ball screw transmission efficiency is higher than the lead screw.High efficiency and good cost performance of high speed lead screw can replace ball screw in a certain range.

ALM factory

ALM originally established in year of 2005.From a small factory,ALM nowadays has four production workshops for ball screw,lead screw,linear motor,linear actuator,linear guideways and related CNC machining parts for automation industry.Total areas over 7000 square meters,109 employees.Above 8 technical engineers are with over 20 years’ experience in linear motion filed.

ALM manufactures and supplies high quality linear motion components for customers in fields of aircraft, satellite,medical,Instrumentation,Robotics,Automobile,Electrical & Electronics,Textile,Medical,Food & Beverages,General Industry and so on.Customers cover more than 65 countries in Europe,North America,South Asia,Middle East,Africa,Latin America etc.With super quality and service,ALM has been widely recognized and highly valued by its high-end and picky customers, and thus remains at the top of their vendor lists.

ALM key production machines are imported,like high precision CNC grinding machine,3 axis,4 axis machining centre,internal and external grinding centre,CNC lathe.In addition,with advanced production management,ALM obtained the quality certificate ISO9001:2008 and IATF16949.And through our R&D department dedication over 16 years,we possess more than 26 national patents.

ALM's office

ALM office

ALM's workshop

ALM workshop

ALM product processing

product processing

ALM's warehouse

ALM warehouse

ALM product show

ALM product show

Customer Visit

ALM customer visit

Patent Certificate for invention and utility model

seidal product certificate

1.Why can ALM be your better option for linear motion components?

With more than 16 years of industry experience,quality assurance,factory directly price.

2.What is your main products ?

Our Main products are consist of ball screw,linear guide,lead screw,linear module and linear motor.

3.How to Custom-made?

Step1:Send us your drawing for checking.We will check the production feasibility.Our specially trained engineers will help you find out the best solution based on rich projects experience.

Step2:We make our production drawing for your checking to avoid misunderstanding.And to ensure each dimensions comply with your requirements.

Step3:Prepare for sample

Step4:After samples approved on your prototype.Move to mass production

4.When can I get the quotation?
We usually quote within 24 hours after we get your inquiry.If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority.





 No 1998 Jinfeng south road,Wuzhong district,Suzhou China.


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