Introduction
The rotating ball screw nut is a core transmission component designed to fit ball screws. It features a built-in circulating steel ball structure, which replaces traditional sliding friction with rolling friction between the steel balls and the screw thread raceways, significantly reducing operational resistance and wear. With its rotary design, it allows a transmission mode where the screw is fixed and the nut rotates, accurately converting rotational motion into linear motion or vice versa. It is characterized by high positioning accuracy, excellent transmission efficiency, quick response, and long service life.
Product Parameters
This rotating ball screw nut adopts a precision circulating steel ball structure, designed to match the corresponding specification of ball screws. It has a flexible structure that suits various installation scenarios, offers low friction resistance and responsive transmission during operation, and can maintain stable positioning accuracy and transmission efficiency under harsh conditions while being wear-resistant and durable.
|
d：Shaft diameter |
I：Lead |
Da：Bead diameter |
k:Rigidity |
n:Number of steel ball turns |
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|
ca:Basic dynamic load rating(kgf) |
coa：Basic static rated load(kgf) |
unit：mm |
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|
Model |
d |
I |
Da |
Nut size |
Ca |
C0a |
K |
|||||||||
|
D |
A |
E |
B |
L |
W |
H |
X |
Q |
n |
|||||||
|
SFA1205-2.8 |
12 |
5 |
2.5 |
24 |
40 |
5 |
10 |
30 |
32 |
30 |
4.5 |
2.8×1 |
661 |
1316 |
19 |
|
|
SFA1210-2.8 |
10 |
2.5 |
24 |
40 |
5 |
10 |
42 |
32 |
30 |
4.5 |
2.8×1 |
642 |
1287 |
19 |
||
|
SFA1605-3.8 |
15 |
5 |
2.778 |
28 |
48 |
5 |
10 |
31 |
38 |
40 |
5.5 |
M6 |
3.8×1 |
1112 |
2507 |
30 |
|
SFA1610-2.8 |
10 |
2.778 |
28 |
48 |
5 |
10 |
42 |
38 |
40 |
5.5 |
M6 |
2.8×1 |
839 |
1821 |
23 |
|
|
SFA1616-2.8 |
16 |
2.778 |
28 |
48 |
5 |
10 |
43 |
38 |
40 |
5.5 |
M6 |
1.8×1 |
852 |
11137 |
14 |
|
|
SFA1616-2.8 |
16 |
2.778 |
28 |
48 |
5 |
10 |
59 |
38 |
40 |
5.5 |
M6 |
2.8×1 |
508 |
1769 |
22 |
|
|
SFA1620-1.8 |
20 |
2.778 |
28 |
48 |
5 |
10 |
50 |
38 |
40 |
5.5 |
M6 |
1.8×1 |
554 |
1170 |
14 |
|
|
SFA1630-1.8 |
30 |
2.778 |
28 |
48 |
7 |
10 |
70 |
38 |
40 |
5.5 |
M6 |
1.8×1 |
534 |
1195 |
14 |
|
|
SFA2005-3.8 |
20 |
5 |
3.175 |
36 |
58 |
7 |
10 |
33 |
47 |
44 |
6.6 |
M6 |
3.8×1 |
1494 |
3681 |
37 |
|
SFA2010-3.8 |
10 |
3.175 |
36 |
58 |
7 |
10 |
52 |
47 |
44 |
6.6 |
M6 |
3.8×1 |
1516 |
3833 |
40 |
|
|
SFA2020-2.8 |
20 |
3.175 |
36 |
58 |
7 |
10 |
52 |
47 |
44 |
6.6 |
M6 |
2.8×1 |
764 |
1758 |
19 |
|
|
SFA2020-1.8 |
20 |
3.175 |
36 |
58 |
7 |
10 |
72 |
47 |
44 |
6.6 |
M6 |
1.8×1 |
1110 |
2134 |
29 |
|
|
SFA2505-3.8 |
25 |
5 |
3.175 |
40 |
62 |
7 |
10 |
33 |
51 |
48 |
6.6 |
M6 |
3.8×1 |
1658 |
4658 |
43 |
|
SFA2510-3.8 |
10 |
3.175 |
40 |
62 |
7 |
12 |
52 |
51 |
48 |
6.6 |
M6 |
3.8×1 |
1638 |
4633 |
45 |
|
|
SFA2525-2.8 |
25 |
3.175 |
40 |
62 |
7 |
12 |
60 |
51 |
48 |
6.6 |
M6 |
2.8×1 |
843 |
2199 |
22 |
|
|
SFA2525-1.8 |
25 |
3.175 |
40 |
62 |
7 |
12 |
85 |
51 |
48 |
6.6 |
M6 |
1.8×1 |
1232 |
3421 |
34 |
|
|
SFA3205-3.8 |
32 |
5 |
3.175 |
50 |
80 |
9 |
12 |
35 |
65 |
62 |
9 |
M6 |
3.8×1 |
1839 |
6026 |
51 |
|
SFA3210-3.8 |
31 |
10 |
3.969 |
50 |
80 |
9 |
12 |
53 |
65 |
62 |
9 |
M6 |
3.8×1 |
2460 |
7255 |
55 |
|
SFA3220-2.8 |
20 |
3.969 |
50 |
80 |
9 |
12 |
72 |
65 |
62 |
9 |
M6 |
2.8×1 |
1907 |
5482 |
43 |
|
|
SFA3232-2.8 |
32 |
3.969 |
50 |
80 |
9 |
12 |
78 |
65 |
62 |
9 |
M6 |
1.8×1 |
1257 |
3426 |
27 |
|
|
SFA3232-2.8 |
32 |
3.969 |
50 |
80 |
9 |
12 |
110 |
65 |
62 |
9 |
M6 |
2.8×1 |
1838 |
5329 |
42 |
|
|
SFA4005-3.8 |
40 |
5 |
3.175 |
63 |
93 |
9 |
14 |
39 |
78 |
70 |
9 |
M8 |
3.8×1 |
2018 |
7589 |
60 |
|
SFA4010-3.8 |
38 |
10 |
6.35 |
63 |
93 |
9 |
14 |
57 |
78 |
70 |
9 |
M8 |
3.8×1 |
5035 |
15943 |
67 |
|
SFA4020-2.8 |
20 |
6.35 |
63 |
93 |
9 |
14 |
78 |
78 |
70 |
9 |
M8 |
2.8×1 |
3959 |
10715 |
54 |
|
|
SFA4040-1.8 |
40 |
6.35 |
63 |
93 |
9 |
14 |
96 |
78 |
70 |
9 |
M8 |
1.8×1 |
2585 |
6648 |
34 |
|
|
SFA4040-2.8 |
40 |
6.35 |
63 |
93 |
9 |
14 |
136 |
78 |
70 |
9 |
M8 |
2.8×1 |
3780 |
10341 |
52 |
|
|
SFA5005-3.8 |
50 |
5 |
3.175 |
75 |
110 |
10.5 |
15 |
42 |
93 |
85 |
11 |
M8 |
3.8×1 |
2207 |
9542 |
68 |
|
SFA5010-3.8 |
48 |
10 |
6.35 |
75 |
110 |
10.5 |
18 |
57 |
93 |
85 |
11 |
M8 |
3.8×1 |
5638 |
17852 |
79 |
|
SFA5020-3.8 |
20 |
6.35 |
75 |
110 |
10.5 |
18 |
99 |
93 |
85 |
11 |
M8 |
3.8×1 |
5749 |
18485 |
87 |
|
|
SFA5050-2.8 |
50 |
6.35 |
75 |
110 |
10.5 |
18 |
188 |
93 |
85 |
11 |
M8 |
1.8×1 |
2496 |
8749 |
42 |
|
|
SFA5050-2.8 |
50 |
6.35 |
75 |
110 |
10.5 |
18 |
167 |
93 |
85 |
11 |
M8 |
2.8×1 |
4308 |
13610 |
65 |
|
Core Advantages
1. Uses a circulating ball transmission structure, resulting in low friction during operation and transmission efficiency far higher than traditional sliding screw nuts, effectively reducing equipment energy consumption.
2. Stable positioning accuracy, strong error control capability during reciprocating motion, meeting the stringent high-precision transmission requirements of automated equipment and precision machine tools.
3. Outstanding wear resistance and durability, with the contact method between the balls and raceway greatly reducing component wear, extending product lifespan, and lowering equipment maintenance costs.
4. Flexible adaptability, compatible with various specifications of ball screws, supporting screw-fixed and nut-rotating transmission modes, easily integrating into different equipment transmission systems.
Scope of application: This rotating ball screw nut has broad adaptability, capable of meeting the high-speed and high-precision transmission needs of precision CNC machine tools, industrial robots, and automated production lines. It can also be used in semiconductor packaging and testing, LCD panel handling, and other electronic equipment manufacturing scenarios. Furthermore, it is suitable for measuring instruments, laser cutting equipment, and even aerospace and medical devices where precision and stability are critical, making it a core preferred component for all types of precision linear transmission equipment.
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: What is the core difference between a rotating ball screw nut and a conventional sliding screw nut?
A: The core difference lies in the transmission method and efficiency. The rotating ball screw nut transmits motion through rolling friction between the steel balls and the raceway, achieving over 90% efficiency. The conventional sliding screw nut relies on surface-to-surface sliding friction, with an efficiency of only 30%-40%. Additionally, the former offers higher positioning accuracy, less wear, and a longer service life.
2. Q: Can this nut be used with ball screws of any specification?
A: Not all specifications are compatible. The nut needs to match the nominal diameter, lead, and other key dimensions of the screw. By providing the exact parameters of the screw, the appropriate matching nut can be selected to ensure smooth transmission and stable precision.
3. Q: Does a rotating ball screw nut require regular maintenance during use?
A: Basic maintenance is required. Primarily, this involves regularly applying a special lubricant to reduce friction and wear between the steel balls and the raceway. Additionally, dust and debris near the nut's dust cover should be cleaned to prevent foreign objects from affecting operation, significantly extending the service life.
4. Q: Why does my equipment occasionally experience positioning deviation even after using this nut?
A: Positioning deviation is likely due to these reasons: first, insufficient lubrication causing uneven running resistance; second, a damaged dust cover allowing debris into the raceway; third, excessive coaxiality error during installation. Checking these points and ensuring proper lubrication and installation calibration can restore accurate positioning.
5. Q: Is this nut suitable for use in harsh working conditions?
A: It can handle normal dusty or mildly humid conditions, especially when used with higher-grade protective dust seals. However, for extreme conditions such as strong corrosion, high temperature, or high pressure, a customized version made from corrosion-resistant or high-temperature-resistant materials should be chosen.
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