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 Features
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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 |
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.