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8mm Diameter 0801 0802 0802.5 0804 0805 Ground Ball Screw

Lead time:10~30
MOQ:1 piece
Ball screw material: bearing steel
  • 0801 0802 0802.5 0804 0805

  • ALM

  • 8479909090

A ground ball screw with an 8mm diameter is available in the following sizes: 0801,0802,0802.5,0804,and 0805.These numbers represent the different lead sizes of the ball screw.The lead size refers to the distance the ball screw moves in one revolution.For example,an 0802 ball screw has a lead size of 2mm,meaning it moves 2mm for every revolution.The ground ball screw is a precision component used in various applications where precise linear motion is required.

ALM Ball Screw Basic Information

 Material  Gcr15(HRC60~62),9Cr18(HRC55~58)
Axial play 0~0.005mm(Can be zero)
Preload P0,P1,P2,P3,P4
Efficiency >90%
 Accuracy grade  C1,C3,C5
Features Clean and smooth,excellent surface finsh
Certificates ISO9001:2015,CE certificate,RoHS and reach compliance

1 piece 

 Lead time

10~30 days.


Carton+Plastic bag + Wooden box or according to customers' demands

 Mating parts

Nut housing,ball screw support BK,BF,EK,EF,FK,FF,end maching service is available

●ALM Ball Screw Details Show

miniature ball screw

●ALM Ball Screw Video Show

8mm Ball Screw Dimension

We support a variety of shaft end machining and ballnut customization.Refer to the catalog below for more ball screw model numbers.  ALM micro ball screw C3 C5 C7-V2.pdf

Ball screw nut

The benefits of using miniature ball screw

1.High precision: Miniature ball screws offer exceptional precision and accuracy in positioning. They have low backlash, which means there is minimal lost motion or play in the system. This makes them ideal for applications that require precise linear motion control, such as in robotics, medical devices, and optics.

2.Compact size: Miniature ball screws are designed to be compact and lightweight, making them suitable for applications with limited space or weight constraints. Their small size allows for easy integration into small-scale systems without compromising on performance.

3.High efficiency: Miniature ball screws have a high mechanical efficiency, typically above 90%. This means that a large portion of the input torque is converted into linear motion, resulting in energy savings and reduced power consumption. It also allows for faster and more efficient operation of the system.

4.Long service life: Miniature ball screws are known for their durability and long service life. They are designed to withstand high loads, repetitive motion, and harsh operating conditions. With proper lubrication and maintenance, they can provide reliable and consistent performance over an extended period of time.

5.Low friction and smooth operation: Miniature ball screws use rolling elements (balls) to reduce friction and enable smooth linear motion. This results in less wear and tear on the system, reduced heat generation, and quieter operation. The low friction also allows for higher speeds and acceleration rates, making them suitable for applications that require fast and dynamic motion.

6.Easy installation and maintenance: Miniature ball screws are relatively easy to install and maintain. They can be easily mounted, aligned, and adjusted to achieve optimal performance. Lubrication intervals are typically longer compared to other types of linear motion systems, reducing the need for frequent maintenance.


Founded in year of 2005,from a small workshop KUNSHAN TIANHE BALL SCREW FACTORY,ALM group has grown fast and has four production workshops now for ball screw,lead screw,linear motor,linear actuator,linear guideways and related CNC machining.Factory area is over 15000 square meters,129 employees.Our factory is equipped with 15 automated production line.Products are 100% inspected before shipping.ALM has obtained ISO9001,IATF16949,CE,RoHS certificate. Over 25 distributors all over the world.

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.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 R&D Team

ALM R&D Team

ALM's office

ALM office

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ALM workshop

ALM product processing

product processing

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shanghai munich industry fairExhibition

Customer Visit

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Patent Certificate for invention and utility model

seidal product certificate

ISO  Certificate


CE Certificate

ALM CE certificate

Excellent HighTech Enterprise

Excellent HighTech Enterprise

Leading Talents Certificate

ALM Leading Talents Certificate

1.Why can ALM be your better option for linear motion components?
●Nearly 20 years of rich manufacturing experience;

●We understand both electrical and mechanical issues. Can recommend good engineering design.

●Quality is guaranteed,We inspect everything, so you won't receive product that doesn't meet specifications. For some parts, we stock for the customer, You never have to wait.
●Easy to pay and can be trusted, We always respond to questions.
●We work on your time zone-You no need work through dinner and at night. Above all, our professional sales and after-service team ensure high efficiency communication to allow you high work efficiency and keep a good mood everyday.

2.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.

3.About shipping and payment:
Sample order: We have DHL, FedEx, UPS VIP account with discount. So you can get favorable shipping freight.
Bulk order: We have freight forwarder to ship by air, by train or by sea. You can also arrange shipping through your own shipping agent.

LC,T/T,D/P, PayPal, Western Union, Money Gram

4.How is quality ensured?
All our processes strictly adhere to ISO9001:2015 procedures. Combining advanced equipment, from production to delivery, we have strict quality control. Our company has strong technical support and has cultivated a group of managers who are familiar with product quality, good at modern concept of management. Our production concept is “Quality has to be caused, not controlled.”

5.How to custom-made (OEM/ODM)?

If you have a new product drawing or a sample, please send to us, we’ll make our production drawing and customize it as per your requirement. We can also provide our professional advices to make your design more realized and maximize the performance. So,If you didn’t find the ideal product from our website, please email us, your inquiry will get fast response.

6.What's your Delivery Time?

●Standard items: Ready in stock

●Customized items:7-20days

●For urgent case, We can make the delivery ASAP with guaranteed quality.





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


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