Product Parameters
Type (TYPE):SFE
I: Lead Da: bead pass Ball Dia.N: Number of bead turns Circuite K: rigid Stiffness(Kgf/ μm)
Basic Dynamic Static Rating Load(Kgf)
|
Model Type |
Reference Data Dimensions Of Ball Screw And Nut |
|||||||||||||||
|
d |
1 |
Da |
D |
A |
E |
B |
L |
X |
W |
H |
Q |
N |
Ca |
Coa |
K |
|
|
SFE1616-4 |
16
|
16 |
2.778 |
32 |
53 |
10.1 |
10 |
38 |
4.5 |
42 |
34 |
M6 |
1.7X2 |
650 |
1280 |
19 |
|
SFE1616-6 |
16 |
2.778 |
32 |
53 |
10.1 |
10 |
38 |
4.5 |
42 |
34 |
M6 |
1.7X4 |
1180 |
2550 |
36 |
|
|
SFE1632-3 |
32 |
3.175 |
34 |
55 |
10.5 |
10 |
34 |
5.5 |
45 |
36 |
M6 |
0.7X2 |
410 |
680 |
21 |
|
|
SFE1632-6 |
32 |
3.175 |
34 |
55 |
10.5 |
10 |
34 |
5.5 |
45 |
36 |
M6 |
0.7X4 |
820 |
1360 |
41 |
|
|
SFE2020-4 |
20
|
20 |
3.175 |
39 |
62 |
11.5 |
10 |
55 |
5.5 |
50 |
41 |
M6 |
1.7X2 |
980 |
2140 |
25 |
|
SFE2020-6 |
20 |
3.175 |
39 |
62 |
11.5 |
10 |
47 |
5.5 |
50 |
41 |
M6 |
1.7X4 |
1780 |
4280 |
49 |
|
|
SFE2040-3 |
40 |
3.175 |
38 |
58 |
11 |
10 |
41 |
5.5 |
48 |
40 |
M6 |
0.7X2 |
455 |
880 |
25 |
|
|
SFE2040-6 |
40 |
3.175 |
38 |
58 |
11 |
10 |
41 |
5.5 |
48 |
40 |
M6 |
0.7X4 |
910 |
1760 |
49 |
|
|
SFE2525-3 |
25
|
25 |
3.969 |
47 |
74 |
13 |
10 |
57 |
6.6 |
60 |
49 |
M6 |
1.7X2 |
1470 |
3350 |
31 |
|
SFE2525-6 |
25 |
3.969 |
47 |
74 |
13 |
12 |
57 |
6.6 |
60 |
49 |
M6 |
1.7X4 |
2660 |
6690 |
60 |
|
|
SFE2550-3 |
50 |
3.969 |
46 |
70 |
13 |
12 |
50 |
6.6 |
58 |
48 |
M6 |
0.7X2 |
685 |
1380 |
31 |
|
|
SFE2550-6 |
50 |
3.969 |
46 |
70 |
13 |
12 |
50 |
6.6 |
58 |
48 |
M6 |
0.7X4 |
1370 |
2760 |
60 |
|
|
SFE3232-4 |
32
|
32 |
4.762 |
58 |
92 |
16 |
12 |
82 |
9 |
74 |
60 |
M6 |
1.7X2 |
2140 |
5260 |
40 |
|
SFE3232-6 |
32 |
4.762 |
58 |
92 |
16 |
12 |
71 |
9 |
74 |
60 |
M6 |
1.7X4 |
3890 |
10500 |
76 |
|
|
SFE3264-3 |
64 |
4.762 |
58 |
92 |
16 |
12 |
62 |
9 |
74 |
60 |
M6 |
0.7X2 |
1000 |
2130 |
40 |
|
|
SFE3264-6 |
64 |
4.762 |
58 |
92 |
15.5 |
12 |
62 |
9 |
74 |
60 |
M6 |
0.7X4 |
2000 |
4260 |
77 |
|
|
SFE4040-4 |
40 |
40 |
6.350 |
73 |
114 |
19 |
15 |
100 |
11 |
93 |
75 |
M6 |
1.7X2 |
3410 |
8820 |
49 |
|
SFE4040-6 |
40 |
6.350 |
73 |
114 |
19 |
15 |
89 |
11 |
93 |
75 |
M6 |
1.7X4 |
6200 |
17600 |
95 |
|
|
SFE5050-4 |
50 |
50 |
7.938 |
90 |
135 |
21.5 |
20 |
117 |
14 |
112 |
92 |
M6 |
1.7X2 |
5100 |
13800 |
60 |
|
SFE5050-6 |
50 |
7.938 |
90 |
135 |
21.5 |
20 |
107 |
14 |
112 |
92 |
M6 |
1.7X4 |
7260 |
27600 |
117 |
|
Product Features and Applications
Features
lead and speed aspects
Large lead design: SFE nut usually has a larger lead, such as SFE1616, SFE2020 and other models, lead and diameter is equal, can achieve a larger linear displacement and rotation angle conversion.
Good high-speed performance: The structural design of the SFE nut makes it stable at high-speed movement, which can meet the requirements of high-speed machining centers and automated production lines for high-speed movement and precise positioning.
Accuracy and load aspects
High precision: the use of precision manufacturing technology and high-quality materials, can ensure high transmission accuracy, suitable for machine tool processing, semiconductor manufacturing and other areas of high positioning accuracy requirements.
High load capacity: it has good rigidity and strength, and can bear large axial load and radial load.
Cycle mode aspect
Unique circulation design: The steel ball rolling method of SFE nut combines the characteristics of external circulation and internal circulation. The steel ball rolls in the groove between the nut and the screw, and is guided into the circulation hole in the nut body by the end cover circulator at the end of the nut.
Product Details
Compared with other types of ball screw nuts, SFE nuts offer distinct advantages:
- Versus SFU nuts: SFU nuts are generally suited for smaller-diameter screws and lighter load applications, whereas SFE nuts are optimized for large lead screws, high-load conditions, and high-speed motion.
- Versus SFA nuts: SFA nuts excel in dustproofing and lubrication design, while SFE nuts stand out for their superior performance in large lead and high-speed operations.
Product Supporting Evidence
1. Clear quality certification and standards
✅International/National Standard Certification:
Comply with ISO 9001 (quality management system), DIN (German standard), GB (national standard), ANSI (American standard), etc.
Quality Assurance System
1.ISO 9001 certification
DLY production system is certified by ISO 9001 quality management, covering the entire process of design, manufacturing and testing, ensuring process consistency and traceability for each batch of SFE nuts.
2. Raw material control
SFE nuts are made of 20CrMo material (hardness 60-64 HRC), which meets international standards to ensure resistance to deformation under high loads.
Re-check the chemical composition and mechanical properties of raw materials before storage to prevent unqualified materials from being put into production.
Performance and Reliability Commitment
1. Accuracy and rigidity
Zero backlash design: through Gothic groove and pre-compression technology (pre-compression grade is P0-P4 optional), the repeated positioning accuracy ≤ ± 0.01mm is guaranteed.
High rigidity index: take SFE04040 as an example, the rigidity reaches 52 kgf/μm, and the deformation under load is very small.
2. Durability and environmental adaptability
Life commitment: dynamic rated load ≥ 21,786 kN (take SFE5050 as an example), design life> 30,000 hours, wear resistance improved by vacuum heat treatment process.
Dust-proof and anti-corrosion: patent end cover seal + resin dust ring, through the test, suitable for dust, cutting fluid environment.
whole process testing and acceptance criteria
Three-stage inspection process
1. Incoming inspection: testing the hardness, tensile strength and chemical composition of raw materials.
2. Process inspection: quality inspection real-time monitoring of dimensional tolerance (0.02mm), surface roughness Ra≤ 3.2 μm.
3. Inspection of finished products:
① Appearance: 100% visual inspection, no cracks, burrs, rust (according to international surface defect standards).
② Performance: guaranteed load test and hardness test.
Intimate Service, Worry-free After-sales
After-sales commitment:
- Return policy for quality issues.
- Technical support (e. g. installation instructions, material selection recommendations).
User Benefits and Operational Guidelines
1. After-sales application process
Step 1: Provide proof of purchase (invoice/receipt) and fault description (with evidence of vibration, noise video, etc.).
Step 2: After the official confirmation of the cause of the failure, send the product back to the designated testing center.
Step 3: Non-warranty cases require pre-authorized repair costs (e. g. SFE2525 nut refurbishment).
2. Prescription commitment
Urgent order: 48 hours to issue a diagnostic report, complete the repair and send back.
Batch repair: 10-15 working days.
Suggestions on Fault Prevention and Self-inspection
1. Regular maintenance points
① Lubrication management: Inject high temperature resistant grease (such as fully synthetic grease for working conditions above 80 ℃) every 3 months to avoid noise caused by dry friction.
② Installation and calibration: Ensure that the screw axis is parallel to the guide rail (three points into a line), and the eccentric error of the nut seat is ≤ 0.01mm.
③ Dustproof measures: the dust environment is equipped with wrinkle protection cover, and the dust ring is cleaned every quarter.
|
Fault phenomenon |
Possible causes |
Self-inspection measures |
|
Positioning accuracy drift |
Failure of nut preloading/loosening of support bearing |
Measuring the Axial Movement of Lead Screw with Dial Indicator |
|
Rattle during operation |
Insufficient lubrication or ball damage |
Check the automatic lubrication system for blockage |
|
Nut stuck |
Dust intrusion or thread corrosion |
Clean and apply anti-rust grease |
Contents of Professional Maintenance Services
1. Fault Diagnosis And Repair
① Accuracy recovery: For problems such as large reverse error and unstable positioning, provide screw axial movement detection (dial indicator measurement method), repair the pre-compression washer of the support bearing or replace the worn nut.
② Dust Optimization: dust environment caused by the jam, can upgrade the end cover seal or replace the material.
③ Pre-pressure adjustment: by replacing the ball diameter or restructuring the nut structure, eliminate the transmission gap (need to match the original pre-pressure level such as 2.8, 3.8).
2. Depth Maintenance Capability
① Refurbishment of secondary grinding: High-precision thread grinding machine is used to repair groove deformation and restore C0-C5-level accuracy (diameter 4-120mm, lead 2-200mm).
② Alternative: Support the compatibility maintenance of the lead screw.
FAQ
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