Ball screws are essential components in many precision motion systems, offering low friction, high efficiency, and accurate linear movement. Choosing the right type of ball screw depends on several factors, including application, load, speed, and required precision. In this article, we'll walk you through the main types of ball screws and how to select the best fit for your needs.
1. By Manufacturing Method
|
Ball Screw Type |
Description |
Features |
Typical Applications |
|
Rolled Ball Screw |
Threads formed by rolling process |
Cost-effective, shorter lead time, moderate precision (C7–C10) |
Automation, woodworking, general machinery |
|
Ground Ball Screw |
Threads ground by precision grinding machines |
High precision (C0–C5), smooth motion, expensive |
CNC machines, aerospace, medical devices |
2. By Precision Grade
|
Ball Screw Type Grade |
Precision Level |
Features |
Typical Applications |
|
C0–C3 |
Ultra Precision |
Excellent for high-precision systems |
High-end CNC, semiconductor, optics |
|
C5 |
High Precision |
Accurate and cost-effective |
Engraving machines, automation |
|
C7 |
General Precision |
Standard for rolled types |
Industrial automation, routers |
|
C10 |
Low Precision |
For non-critical motion |
Basic mechanical transfer |
3. By Ball Circulation Method
| Ball Screw Type |
Description |
Feature | Application |
| External Circulation |
Balls return via external tubes |
External return heavy load design, a better solution for heavy load and high speed. | High speed industrial, Precision machine tool, CNC application and electronic application. |
|
Internal Circulation |
Re circulation inside the nut body |
Internal return design saves more space; No backlash, High rigidity | Industrial application, machine tool and automation application |
|
End Cap Return |
Re circulation through end caps |
high speed, low noise, high Dm-N value;Enhanced dust-proof design. | High speed application, CNC milling, precision application, factory automation and medical industry. |
|
Helical Groove |
Return path integrated in nut grooves |
Suitable for small leads or miniature screws |
High-precision and high-speed applications such as CNC machines, robotics, and semiconductor equipment. |
4. By Nut Structure
| Ball Screw Nut Type |
Description |
Features |
|
Most common, simple design |
Cost-effective, easy to install |
|
|
Two nuts with shim for preload |
Higher stiffness, backlash-free |
|
|
Left/Right-handed |
Different thread directions |
Suitable for special applications |
5. By Lead Size (Pitch)
|
Ball Screw Lead Type |
Characteristics |
Recommended Use |
|
Small Lead (<5mm) |
High resolution, low speed |
Precision positioning, medical devices |
|
Medium Lead (5–20mm) |
Balanced speed and force |
General automation |
|
Large Lead (>20mm) |
High speed, lower resolution |
Pick & place systems, robotic arms |
Selecting the right ball screw depends on your application's accuracy requirements, budget, load conditions, and speed needs. For most general automation needs, rolled ball screws (C7) offer a great balance of cost and performance. For high-end equipment, consider ground screws with tighter tolerances.
One-stop Ball Screw Manufacturer in China
Zhejiang DLY Automation is a ball screw manufacturer with over 20 years of experience in the design and production of high-precision ball screws. Backed by a professional R&D team, we specialize in developing customized solutions tailored to your application needs. We offer free CAD drawings to support your project planning and design process. Feel free to contact us today to discuss your requirements-we're here to help you find the best solution.
