Introduction
A ball screw and ball nut are a set of precision transmission components that work in coordination, enabling the conversion between rotational motion and linear motion. The ball nut contains a circulating ball channel. When it meshes with the screw, the balls roll within the screw groove, replacing traditional sliding friction, significantly improving transmission efficiency and smoothness. This set of components achieves backlash-free transmission through a compact structural design, combining high rigidity and stability. It can precisely control motion travel and also offers excellent wear resistance, maintaining stable transmission accuracy over the long term.
Product Parameters
The core parameters of a ball screw and ball nut include the screw diameter defining basic compatibility specifications, movement-related transmission distance indicators, and the nut structure dimensions specifying the installation configuration; it also covers accuracy grades that categorize transmission precision, the ball circulation method and preload adjustment type that determine operational characteristics, rated load parameters reflecting load capacity, and rigidity indicators indicating operational stability. Additionally, it includes material and surface treatment affecting durability, as well as protective parameters ensuring compatibility with the operating environment.
|
d：Shaft diameter |
I：Lead |
Da：Bead diameter |
k:Rigidity |
n:Number of steel ball turns |
|||||||||
|
ca:Basic dynamic load rating(kgf) |
coa：Basic static rated load(kgf) |
unit：mm |
|||||||||||
|
Model |
d |
l |
Da |
Nut size |
Ca |
C0a |
k |
||||||
|
D |
L |
L1 |
L2 |
M |
R |
n |
|||||||
|
SCI01604-4 |
16 |
4 |
2.381 |
30 |
40 |
9 |
15 |
3 |
1.5 |
1×4 |
973 |
2406 |
32 |
|
SCI01605-4 |
5 |
3.175 |
30 |
45 |
9 |
20 |
5 |
3 |
1×4 |
1380 |
3052 |
33 |
|
|
SCI02004-4 |
20 |
4 |
2.381 |
34 |
40 |
9 |
15 |
3 |
1.5 |
1×4 |
1066 |
2987 |
37 |
|
SCI02005-4 |
5 |
3.175 |
34 |
45 |
9 |
20 |
5 |
3 |
1×4 |
1551 |
3875 |
39 |
|
|
SCI02504-4 |
25 |
4 |
2.381 |
40 |
40 |
9 |
15 |
3 |
1.5 |
1×4 |
1180 |
3795 |
43 |
|
SCI02505-4 |
5 |
3.175 |
40 |
45 |
9 |
20 |
5 |
3 |
1×4 |
1724 |
4904 |
45 |
|
|
SCI02510-4 |
10 |
4.762 |
46 |
85 |
13 |
30 |
5 |
3 |
1×4 |
2954 |
7295 |
51 |
|
|
SCI03204-4 |
32 |
4 |
2.381 |
46 |
40 |
9 |
15 |
3 |
1.5 |
1×4 |
1296 |
4838 |
49 |
|
SCI03205-4 |
5 |
3.175 |
46 |
45 |
9 |
20 |
5 |
3 |
1×4 |
1922 |
6343 |
52 |
|
|
SCI03210-4 |
10 |
6.35 |
54 |
85 |
13 |
30 |
5 |
3 |
1×4 |
4805 |
12208 |
62 |
|
|
SCI04005-4 |
40 |
5 |
3.175 |
56 |
45 |
9 |
20 |
5 |
3 |
1×4 |
2110 |
7988 |
59 |
|
SCI04010-4 |
10 |
6.35 |
62 |
85 |
13 |
30 |
5 |
3 |
1×4 |
5399 |
15500 |
72 |
|
|
SCI05010-4 |
50 |
10 |
6.35 |
72 |
85 |
13 |
30 |
5 |
3 |
1×4 |
6004 |
19614 |
83 |
|
SCI06310-4 |
63 |
10 |
6.35 |
85 |
85 |
13 |
30 |
6 |
3.5 |
1×4 |
6719 |
25358 |
95 |
|
SCI08010-4 |
80 |
10 |
6.35 |
105 |
85 |
13 |
30 |
8 |
4.5 |
1×4 |
7346 |
31953 |
109 |
Core Advantages
1.Outstanding transmission efficiency: By replacing traditional sliding friction with rolling friction between the balls and the nut on the screw, friction resistance is greatly reduced, enabling more direct and efficient energy transfer. This not only minimizes energy loss during operation but also reduces the load on the drive system. Compared to traditional transmission components, it operates more energy-efficiently and generates less heat.
2. High positioning accuracy and stability: The preloading design effectively eliminates axial clearance, and combined with precisely machined raceway structures, it achieves micrometer-level accurate positioning. Even during frequent direction changes or long-term operation, it maintains stable transmission precision, avoiding creeping or deviation. Optimized materials and structural design enhance overall rigidity, making deformation under load unlikely and further ensuring positioning accuracy.
3. Clear durability and ease of maintenance: Core components use high-hardness materials with professional surface treatment, and the characteristics of rolling friction significantly reduce wear, giving it a service life far exceeding traditional sliding screw products. Routine maintenance only requires simple periodic lubrication, and some products even support integrated lubrication designs, eliminating complex operations and reducing downtime and overall operating costs.
4. Compact and practical structural design: The internal recirculating ball structure does not require additional installation space, making it adaptable to various device assembly requirements. At the same time, the included dustproof and protective design effectively blocks contaminants from entering the raceways, protecting internal components. It can operate stably even in industrial environments, suitable for high-frequency, high-load applications.
Scope of Application: The combination of ball screws and ball nuts is widely used in various equipment requiring precise control of linear motion. This set of components is used in machinery where positioning accuracy is critical and smooth operation is essential. Whether it is devices requiring frequent reciprocating motion, heavy equipment needing to bear certain loads, or automated systems aiming for high efficiency and low energy loss, they can all take advantage of its characteristics.
Service Model
Standard Product Supply:
Offers in-stock products with delivery within 3-7 days;
Custom Solutions:
From requirement communication → solution design → sample testing → mass production, the entire process is supported by a dedicated technical contact;
After-Sales Support:
Provides product installation guidance, a 1-year warranty (excluding human-caused damage), and fast response to malfunctions.
Our Factory
Xuxin Automation: Your Premier One-Stop Manufacturer for High-Precision Motion Components
we specialize in the R&D and manufacturing of custom non-standard lead screws and nuts. With our 13,000 m² state-of-the-art facility, we deliver highly reliable industrial automation solutions tailored to your exacting requirements.
Production Area
Advanced Equipment
Experienced Team
Annual Output
Why Choose Us?
Exceptional Non-Standard Customization Capabilities
In-house R&D: Our professional engineering team possesses decades of deep-seated expertise in the lead screw and nut industry.
On-Demand Development: Whether you require specialized leads, unique materials, or complex structures, we provide bespoke manufacturing based on your technical drawings (PDF, CAD, or 3D models).
Rigorous Quality Control & Manufacturing
High-Precision Machining: Leveraging our fleet of 80 CNC machines and precision grinding centers, we ensure every component achieves micron-level accuracy.
Full Supply Chain Integration: From raw material processing and heat treatment to precision grinding and final inspection, the entire process is completed in-house. This end-to-end control guarantees stable lead times and uncompromising quality.
FAQ
1. Q: Why does backlash occur when a ball screw and ball nut operate together?
A: Backlash is most likely caused by improper preload settings or internal component wear due to long-term heavy load operation. In addition, excessive coaxial deviation during installation can also compromise the fitting accuracy between the two, resulting in backlash. You can first check the preload structure, replace worn components if necessary, and recalibrate the installation accuracy.
2. Q: How should the lubrication interval for ball screws and nuts be determined?
A: There is no fixed standard for the lubrication interval; it mainly depends on the operating environment and frequency of use. Under clean, low-load conditions, the lubrication interval can be appropriately extended. In dusty, high-temperature, or high-load conditions, the lubrication interval should be shortened to prevent raceway wear and operational sticking due to insufficient lubrication. It is recommended to regularly check the condition of the grease based on actual operation and adjust the lubrication frequency accordingly.
3. Q: Can a ball nut continue to be used if a ball falls out?
A: It is not recommended to continue using it. A missing ball directly disrupts the recirculating path, causing a significant drop in transmission accuracy and accelerating wear on the screw raceway, which may even result in jamming. If this issue occurs, the machine should be stopped immediately, and the ball nut replaced to avoid more serious damage to the entire system.
4. Q: Can ball screws and nuts be used in corrosive environments?
A: Standard ball screws and nuts are not suitable for highly corrosive environments. If operation in such environments is required, it is recommended to choose products with special surface treatments, such as galvanized or chrome-plated, or use corrosion-resistant components, combined with better-sealed protective structures to reduce the ingress of corrosive media.
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