Product Description
SFI series Domestic Chinese ball screw shaft with nut details
High precision low noise ERSK ball screw
Ball screw is made of screw, nut and ball. The function is to turn the rotary motion into liner motion, which is a further extension and development of ball screw. The significance of this development is to move into a rolling bearing from sliding action; With little friction, ball screws are widely used in various industrial equipment and precision instruments.
Products overview
High Reliability
TBI MOTION or ERSK ball screw has very stringent quality control standards covering every production process. With proper lubrication and use,trouble-free operation for an extended period of time is possible.
Smooth Operation
The high efficiency of ball screws is vastly superior to conventional screws. The torque required is less than 30%. Linear motion can be easily changed from rotary motion.
High Rigidity and Preload
When axial play is minimized in conventional screw-nut assemblies, the actuating torque becomes excessive and the operation is not smooth. The axial play in TBI MOTION or ERSK precision ball screws may be reduced to zero by preloading and a light smooth operation is still possible. herefore, both low torque and high rigidity can be obtained simultaneously.TBI MOTION or ERSK ball screws have gothic arch groove profiles which allow these conditions to be achieved.
Circulation Method
Ball return tube method.(V,E,S,Y type);Ball defelector method.(I,U,M,K type)
High Durability
Rigidly selected materials, intensive heat treating and processing techniques, backed by years of experience,have resulted in the most durable ball screws manufactured.
Ball screw size are the same as Taiwan TBI ball screw shafts and nuts, they can be interchanged into each other
We are able to machinize the end sides of ball screw shafts according to your requirements
There are many parts what can be matched into the ball screw, Please
choose what you need:
((( ball screw shaft, ball screw Nut, Nut housing, Coupling, End support unit )))
There are many different series of ball screw shaft with nut, like SFU series, SFS series, SFI series, SFY series, DFU series, SFUL series, SFK series.Each series has its own characteristics, Let's look at the difference in appearance and characteristics.
Ball screw Feature
1. Cold rolled ball screw;
2. Gcr15 material;
3. High-speed operation
4. C5 C7 C10 precision;
5. No gap and preloading
6. Quality as good as TBI brand is high precision, long life use.
7. Pay more attention to before-sale, in-sale, after -sales service.
8. Manufacturer with large stock & short delivery
| Ball Screw Features | |||||
| Item | Material | Heat Treatment | Hardness | Accurancy | Preload |
| Ball screw shaft | SCM450 S55C CF53 | Induction Heating | HRC58-62 | C5:0.018mm C7:0.05mm C10:0.21mm | P1:Zero P2:Light P3:Medium P4:Heavy |
| Ball screw nut | SCM415 20CrMo | Carbonizing Hardening | HRC58-62 | C5:0.018mm | P1:Zero P2:Light P3:Medium P4:Heavy |
| Steel balls | SUJ2 GCr15 | HRC58-62 | |||
Cold Rolled Ball Screw Application:
1. Engraving machines; 2. High speed CNC machinery;
4. Auto-machinery. 3. Semi-Conductor equipment;
5. Machine tools; 6. Industrial Machinery;
7. Printing machine; 8. Paper-processing machine;
9. Textiles machine; 10. Electronic machinery;
11. Transport machinery; 12. Robot etc.
Rolled ball screws can not only be used in above general machinery, but also in many advanced industries. Rolled ball screw with a motor assembles electrical-mechanical actuator, which is more eco-friendly than hydraulic pump system. Nowadays it's applied to electric vehicles, solar power plants, railway devices and many medical and leisure equipments.
The way to assemble the ball screw nut in the ball screw shaft
Over Service and Our principle:
Quality first, credibility is the key, the price followed
Packaging and shipping
PP bag for each linear shaft, Standard exported carton outside for small order shipping by international express,such as DHL, TNT, UPS,Wooden box outside for big quantity or very
long linear shaft by sea, by air
Company Information
Lishui Wangong Precision Machinery Co., Ltd's ERSK brand is the leading brand of rolled ball screw and linear guide in China. We design and produce our own rolling tools, and we can produce all kinds of screws and nuts or linear guide upon customer's requests.We produce cold rolled ball screw in large stock, Specification include: 1204, 1604, 1605, 1610, 2004, 2005, 2010, 2505, 2510, 3205, 3210, 4005, 4010, 4020, 5005, 5010, 6310, etc. (Having all kinds of models) the max length 6000mm, we suggest customer accept 3000mm, it's easy packing, easy and safe for transport.
Related Products:
Ball screw end support
Nut bracket
Coupling
All those relative products have large stock.
Frequently Asked Questions
1. What's your main products?
Cold rolled ball screws, ball screw support units, Linear guide rails, Linear motion ball slide bearing, Cylinder rails, Linear shaft, Couplings, etc.
2. How can I get a sample to check your quality?
After price confirmation, sample order is available to check our quality.
3. 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.
4. Can you do ball screw end machine processing?
Yes. We have a professional team having rich experience in end machine processing, please provide us the drawing with the tolerance and we will help you to make the ball screws depending on the drawing.
5. How long is the lead time for mass production?
Honestly, it depends on the order quantity and the season you place the order. The lead time of MOQ is about 7 to 15 days. Generally speaking, we suggest that you start inquiry two months before the date you would like to get the products at your country.
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