| Customization: | Available |
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| Flange: | With Flange |
| Nut Number: | Single |
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Domestic rolled thread C7 ball screw, C5 ground ball screw
A ball screw is a mechanical component that plays a crucial role in many industrial applications.
Ball Screw Technical Overview
A ball screw is a high-precision mechanical linear actuator that converts rotational motion into linear motion with minimal friction. It consists of a threaded shaft (screw) and a nut integrated with recirculating ball bearings, enabling efficient force transmission.
Ball Screw Key Components
It consists of four main parts:
1. Screw Shaft: A precision-ground helical groove (thread) acts as the raceway for ball bearings.
2. Nut: Contains a matching internal thread and ball recirculation channels.
3. Ball Bearings: Load-bearing steel balls that roll between the screw and nut, reducing sliding friction.
4. Return System: Guides balls through recirculation paths to ensure continuous motion.
Working Principle:
- Rotational force applied to the screw/nut causes the balls to roll along the helical grooves.
- The rolling motion minimizes friction (typically 90%+ efficiency vs. 20-50% for lead screws), enabling smooth, precise linear displacement.
Advantages:
1. High Efficiency: 90-99% mechanical efficiency due to rolling contact.
2. Precision: Achieves micron-level positioning accuracy (critical for CNC machines, robotics).
3. Durability: Long service life with proper lubrication; preload adjustments minimize backlash.
4. Load Capacity: Supports high axial loads (static/dynamic) with minimal wear.
Applications:
Due to its excellent performance, ball screws are widely used in various fields:
- Industrial Automation: CNC machine tools, robotic arms, 3D printers.
- Aerospace: Flight control systems, landing gear mechanisms.
- Medical: Imaging systems, surgical robots.
- Automotive: Electric power steering (EPS), throttle control.
• CNC machine tools: They are used to control the movement of the tool and the workpiece, ensuring high-precision machining.
• Industrial robots: Ball screws play a key role in the joints and linear motion modules of robots, enabling precise positioning and movement.
• Semiconductor equipment: They are used in wafer handling systems, lithography machines and other equipment to achieve precise positioning and movement control.
• Aerospace: In aircraft and spacecraft, ball screws are used in landing gear systems, flight control surfaces and other components that require high-precision motion control.
Variants:
- Preloaded Ball Screws: Eliminate backlash for ultra-precise applications.
- Miniature Ball Screws: Compact designs for limited spaces (e.g., semiconductor equipment).
- Roller Screws: Use cylindrical rollers for even higher load capacity.
Maintenance:
- Regular lubrication (grease or oil) is critical to prevent wear and corrosion.
- Sealing systems (wipers, shields) protect against contaminants.
Our Ball Screw product advantage:
Material: S55C, CF53 high carbon steel for ball screw shaft
20CrMo material for ball screw nut
GCr15 bearing steel for balls
Feature:
1, Moving very smoothly
2, Easy interchanged into TBI ball screw shaft and nut, Good quality the same as TBI
3, Having C7 precision rolled thread ball screw and C5 precision ground ball screw
4, Customized un-standard ball screw and ballscrew nut according to your requirements
5, Plenty of series ball screw, like: SFU, SFNU, SFUL, DFU, SFI, SFY, SFS, SFA, SFK and so on, Satisfy to your different request
6, Lead screw and nut stock is sufficient
| Brand name | ERSK, (they are able to interchange into TaiWan 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 |
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 |
The way to assemble the ball screw nut in the ball screw shaft
ERSK manufacturer main products
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 Taiwan. Our commitment to innovation has led to the acquisition of multiple product design patents, and we proudly adhere to ISO9001 certification standards.
Lishui Wangong Precision Machinery Co., Ltd.
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