China high quality Cold-Rolled Ball Screw for High-Load Drive (SFU1605, SFU2010, SFU3205)

Product Description

Domestic C7 rolled ball screw shaft, C5 ground ball screw shaft, Ball screw nut

Company Profile

HangZhou Wangong Precision Machinery Co., Ltd.

About US: Professional  producing Ball screw, Linear guide, linear shaft, Linear roller guide and linear motion bearings
HangZhou Wangong Precision Machinery Co., Ltd was founded in 2008 and is located in HangZhou City, ZHangZhoug Pro. China. We ahve built a R&D and profuction base of more than 52000m, Our expertise lies in manufacturing precision transmission components, As a distinguished high-tech enterprise, we seamlessly integrate research and development, production, sales, and service. We have successfully incorporated advanced equipment and cutting-edge technologies from renowned countries like Germany, Japan and ZheJiang .

Product Description

1,Intruduction

High precision low noise CHINAMFG 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.

2, Ball screw feature

High Reliability

TBI MOTION or CHINAMFG 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 CHINAMFG 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 CHINAMFG ball screws have gothic CHINAMFG 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.

3, All kinds of ball srew series
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.

    SFU series           SFS/SFA series           SFI series

   DFU series     SFY series    SFK series

   SCI series                                         Ball screw set                          C5 ground ball screw series

 

4, Ball screw Specification
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    

 

Brand name ERSK, (they are able to interchange into ZheJiang TBI ball screw and nut)
Product name C5 ground ball screw, C7 rolled ball screw
Model no. SFU/SFNU/SFS/SFA/SFI/SFY/DFU/SFK/SCI series
Material S55C material for ball screw shaft, 20CrMo material for ball screw nut
Service after-sale service and technical assistance as per customer’s
requirement and needs. Customers are always given quickly
support.
Length Max:6000mm, other length as your requirement
Delivery time Base on customer required quantity,by negotiated
Products packing Plastic bag+box case or wooden case, or according to
customer’s requestment
Sample Sample order could be available
Payment terms T/t or L/C are available for large orders, Paypal and West
Union for small orders
Shipping method DHL,UPS,TNT,FEDEX,EMS,Airfreight and by sea, By
negotiated
Quality ISO9001-2008

5, We can machinize the ball screw shaft according to the drawings

6, Data sheet

Installation Instructions

The way to assemble the ball screw nut in the ball screw shaft

 

Related products

ERSK manufacturer main products

Our Advantages

As a distinguished high-tech enterprise, we seamlessly integrate research and development, production, sales, and service. We have successfully incorporated advanced equipment and cutting-edge technologies from renowned countries like Germany, Japan, and ZheJiang . Our commitment to innovation has led to the acquisition of multiple product design patents, and we proudly adhere to ISO9001 certification standards.

Our service

Our Team:
Professional technicians, high-quality production workers, 24-hour salespersons
OUR PHILOSOPHY:
Integrity is at the core of our values, and providing excellent 
service is our top priority. We begin by understanding your 
needs and strive to ensure your utmost satisfaction, forging a mutually beneficial relationship.
OUR MISSION:
Through technology and innovation, we strive to enhance 
product quality and deliver exceptional products and services 
to you.
OUR VISION:
We are firmly dedicated to CHINAMFG the pinnacle of highquality standards and venturing into the realm of world-class 
advanced manufacturing industries.
We are excited about the opportunity to work with you and 
exceed your expectations.

 

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Precision: C7
Screw Diameter: 31-40mm
Flange: With Flange
Samples:
US$ 80/Piece
1 Piece(Min.Order)

|

Order Sample

ball screw assemble
Customization:
Available

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Shipping Cost:

Estimated freight per unit.







about shipping cost and estimated delivery time.
Payment Method:







 

Initial Payment



Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

worm screw

What are the limitations of using worm screws in mechanical designs?

While worm screws offer several advantages in mechanical designs, they also have some limitations that should be considered. Here are the key limitations of using worm screws:

  1. Lower Mechanical Efficiency: Worm screw mechanisms tend to have lower mechanical efficiency compared to other gear systems. This is primarily due to the sliding contact between the worm screw threads and the worm wheel teeth, which results in higher friction and energy losses. The lower mechanical efficiency can lead to heat generation, reduced power transmission, and decreased overall system efficiency. It’s important to consider the trade-off between the desired gear reduction and the mechanical efficiency requirements of the specific application.
  2. Limited High-Speed Applications: Worm screws are not well-suited for high-speed applications. The sliding contact and meshing action between the threads and teeth can generate heat and cause wear at high rotational speeds. Additionally, the higher friction and lower mechanical efficiency mentioned earlier can limit the maximum achievable speed of the system. If high-speed operation is a requirement, alternative gear systems, such as spur gears or helical gears, may be more suitable.
  3. Backlash: Worm screw mechanisms can exhibit a certain amount of backlash, which is the lost motion or clearance between the threads and teeth when changing direction. Backlash can negatively impact precision and positioning accuracy in applications that require tight tolerances. It’s important to consider backlash and implement measures to minimize its effects, such as using anti-backlash mechanisms or incorporating backlash compensation techniques.
  4. Material Selection: The choice of materials for worm screws is crucial to ensure their durability and performance. Worm screws typically require harder materials to withstand the sliding contact and high contact pressures between the threads and teeth. The selection of suitable materials may increase the manufacturing complexity and cost of the worm screw assembly. Additionally, the choice of materials should consider factors such as compatibility, wear resistance, and the specific operating conditions of the application.
  5. Load Distribution: In worm screw mechanisms, the load is distributed over a limited number of teeth on the worm wheel. This concentrated load distribution can result in higher stresses and wear on the contacting surfaces. It’s important to consider the load capacity and contact area of the worm wheel teeth to ensure that the assembly can handle the anticipated loads without premature failure or excessive wear.
  6. Required Lubrication: Proper lubrication is crucial for the smooth operation and longevity of worm screw mechanisms. Lubrication helps reduce friction, wear, and heat generation between the contacting surfaces. However, the need for lubrication adds complexity to the design and maintenance of the system. It requires regular monitoring of lubricant levels and periodic lubricant replenishment or replacement. Failure to maintain proper lubrication can result in increased friction, wear, and potential system failure.

Despite these limitations, worm screws continue to be widely used in various mechanical designs due to their unique characteristics and advantages. It’s essential to carefully evaluate the specific requirements and constraints of the application and consider alternative gear systems if the limitations of worm screws pose significant challenges to the desired performance and efficiency.

worm screw

How do environmental factors affect the lifespan and performance of worm screws?

Environmental factors can have a significant impact on the lifespan and performance of worm screws. Here are some ways in which different environmental conditions can affect worm screw operation:

  • Temperature: Extreme temperatures can affect the material properties of worm screws. High temperatures can cause thermal expansion, leading to increased clearances and reduced efficiency. It can also accelerate wear and degradation of lubricants, leading to increased friction and potential damage. Conversely, extremely low temperatures can make lubricants less effective and increase the risk of brittle fracture or reduced flexibility in materials.
  • Humidity and Moisture: Exposure to high humidity or moisture can lead to corrosion and rusting of worm screws, especially when they are made of materials that are not resistant to moisture. Corrosion can cause surface pitting, reduced strength, and accelerated wear, ultimately compromising the performance and lifespan of the worm screw.
  • Dust and Contaminants: Dust, dirt, and other contaminants present in the environment can enter the worm gear system and cause abrasive wear on the worm screw. These particles can act as abrasives, accelerating the wear of the contacting surfaces and potentially leading to premature failure or reduced performance. Regular cleaning and maintenance are essential to mitigate the effects of dust and contaminants.
  • Chemical Exposure: Exposure to chemicals, such as acids, solvents, or corrosive substances, can have a detrimental effect on worm screws. Chemicals can corrode the surfaces, degrade lubricants, and affect the material properties, leading to reduced lifespan and compromised performance. Choosing materials and coatings that are resistant to specific chemicals present in the environment is crucial for long-term performance.
  • Load and Overloading: Environmental conditions, such as heavy loads or overloading, can significantly impact the lifespan and performance of worm screws. Excessive loads can lead to increased stress levels, deformation, and accelerated wear on the worm screw. It is important to operate worm gear systems within their specified load capacities and avoid overloading to ensure optimal performance and longevity.
  • Operating Speed: The operating speed of the worm screw can also be influenced by environmental factors. High-speed applications may generate more heat due to friction, necessitating effective cooling mechanisms. On the other hand, low-speed applications may exhibit reduced lubrication effectiveness, requiring specific lubricants or maintenance practices to ensure proper lubrication and prevent excessive wear.

To mitigate the effects of environmental factors, proper maintenance, regular inspection, and suitable protective measures are essential. This includes using appropriate lubricants, implementing effective sealing mechanisms, applying protective coatings, and considering environmental factors during the design and material selection process. By considering and addressing environmental factors, the lifespan and performance of worm screws can be optimized, ensuring reliable operation in various operating conditions.

worm screw

How does a worm screw differ from a regular screw?

In mechanical engineering, a worm screw differs from a regular screw in several key aspects. While both types of screws have helical threads, their designs and functions are distinct. Here are the primary differences between a worm screw and a regular screw:

  • Motion Transmission: The primary function of a regular screw is to convert rotary motion into linear motion or vice versa. It typically has a single-threaded or multi-threaded configuration and is used for applications such as fastening, clamping, or lifting. On the other hand, a worm screw is designed to transmit motion and power between non-parallel shafts. It converts rotary motion along its axis into rotary motion perpendicular to its axis by meshing with a worm wheel or gear.
  • Gear Ratio: The gear ratio of a worm screw is typically much higher compared to that of a regular screw. The helical teeth of the worm screw and the worm wheel allow for a high reduction ratio in a single gear stage. This means that a small rotation of the worm screw can result in a significant rotation of the worm wheel. In contrast, a regular screw does not have a gear ratio and is primarily used for linear motion or force multiplication.
  • Orientation and Shaft Arrangement: A regular screw is typically used in applications where the input and output shafts are parallel or nearly parallel. It transfers motion and force along the same axis. In contrast, a worm screw is designed for applications where the input and output shafts are perpendicular to each other. The orientation of the worm screw and the worm wheel allows for motion transmission between non-parallel shafts.
  • Self-Locking: One distinctive characteristic of a worm screw is its self-locking property. The helical teeth of the worm screw create a wedging effect that prevents the worm wheel from driving the worm screw. This self-locking feature allows worm screws to hold loads without the need for additional braking mechanisms. Regular screws, on the other hand, do not have this self-locking capability.
  • Applications: Regular screws find widespread use in numerous applications, including construction, manufacturing, woodworking, and everyday objects like screws used in fastening. They are primarily employed for linear motion, clamping, or force multiplication. Worm screws, on the other hand, are commonly used in applications that require significant speed reduction, torque multiplication, or motion transmission at right angles. Typical applications include conveyor systems, winches, lifting mechanisms, and heavy machinery.

These differences in design and function make worm screws and regular screws suitable for distinct applications. Regular screws are more commonly used for linear motion and force transfer along parallel or nearly parallel shafts, while worm screws excel in transmitting motion and power between non-parallel shafts with high gear reduction ratios.

China high quality Cold-Rolled Ball Screw for High-Load Drive (SFU1605, SFU2010, SFU3205)  China high quality Cold-Rolled Ball Screw for High-Load Drive (SFU1605, SFU2010, SFU3205)
editor by CX 2024-03-29

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