DLY SFS Nuts are silent type single ball screw nuts designed for SFS series ball screw assemblies. Compared with standard ball screw nuts, the SFS nut structure is often selected when the machine requires compact installation space, smooth running, lower operating noise and stable feed performance.
DLY can supply SFS nuts only, or provide matched SFS ball screw assemblies with screw shaft, nut, end machining and export packaging according to your drawing or application requirement.
Main supply scope:
SFS silent type single nuts, replacement SFS nuts, SFS ball screw nut assemblies, matched screw-nut sets, shaft end machining and drawing-based confirmation for CNC machines, automation equipment, laser equipment, packaging machinery and compact linear motion systems.
SFS ball screw nut matched with screw shaft for compact linear motion assemblies.
SFS ball screw assembly can be used with support units and customized shaft end machining.
SFS nut can be supplied alone or matched with a complete ball screw assembly.
SFS Nuts Product Specifications
| Product Name | SFS Nuts / SFS Ball Screw Nut / Silent Type Single Nut |
| Matched Screw Series | SFS series ball screw shaft |
| Common Models | SFS1205, SFS1210, SFS1605, SFS1610, SFS1616, SFS1620, SFS2005, SFS2010, SFS2020, SFS2505, SFS2510, SFS2525, SFS3210, SFS3220, SFS3232, SFS4010, SFS4020, SFS4040, SFS5010, SFS5020, SFS5050 |
| Screw Diameter Range | 12mm, 15/16mm, 20mm, 25mm, 31/32mm, 38/40mm, 48/50mm |
| Lead Options | 5mm, 10mm, 16mm, 20mm, 25mm, 32mm, 40mm, 50mm |
| Nut Material | 20CrMo alloy steel or equivalent ball nut material |
| Accuracy Grade | C7 rolled type; C5 ground type available according to requirement |
| Supply Method | Nut only, nut with screw shaft, complete SFS ball screw assembly, drawing-based custom order |
| Typical Application | CNC equipment, laser equipment, automation transfer axis, packaging machinery, linear modules, positioning tables |
SFS Silent Type Single Nut Series Dimension Table
SFS silent type single nut series dimension table for model and mounting confirmation.
Quick Model Selection Reference
SFS nuts should be selected according to screw diameter, lead, installation space, load requirement and required travel speed. The same diameter may have different lead options, so the final model should be confirmed together with the screw shaft.
| Model Group | Main Feature | Typical Use |
|---|---|---|
| SFS1205 / SFS1210 | Small diameter and compact nut size | Small positioning tables, light automation, compact feed axis |
| SFS1605 / SFS1610 / SFS1616 / SFS1620 | Common compact models with multiple lead options | CNC auxiliary axis, engraving equipment, laser equipment, automation slides |
| SFS2005 / SFS2010 / SFS2020 | Balanced diameter, load and speed options | Packaging machinery, transfer axis, machine tool feed systems |
| SFS2505 / SFS2510 / SFS2525 | Larger nut body and lead options for medium equipment | Automation equipment, linear modules, repeated feed motion |
| SFS3210 / SFS3220 / SFS3232 | Suitable for longer stroke and higher feed demand | Long-stroke automation, laser machines, fast transfer systems |
| SFS4010 / SFS4020 / SFS4040 / SFS5010 / SFS5020 / SFS5050 | Large diameter and higher load options | Industrial machinery, larger automation axes, heavy-duty linear motion systems |
What Makes SFS Nuts Different?
Silent Type Single Nut Design
SFS nuts are designed for smoother operation and lower noise in suitable ball screw systems.
Compact Installation Size
The nut body is suitable for equipment where installation space is limited but stable feed motion is still required.
Multiple Lead Options
Models with 5mm, 10mm, 20mm, 32mm, 40mm and 50mm lead can support different speed and travel requirements.
Matched Screw-Nut Supply
DLY can provide SFS nuts alone or match them with SFS ball screw shafts before shipment.
SFS Nuts vs Other Ball Screw Nuts
SFS nuts should not be mixed with other nut types only by appearance. Each nut series has different mounting dimensions, circulation structure and matching requirements.
| Nut Type | Main Feature | Suitable Use |
|---|---|---|
| SFS Nut | Silent type single nut, compact size, suitable for SFS screw matching | Compact feed axis, automation, medium-to-high speed motion |
| SFU Nut | Standard flange nut, widely used in general ball screw assemblies | General CNC, automation, engraving machines |
| DFU Nut | Double nut structure for better rigidity and reduced axial clearance | Higher rigidity feed systems and repeated positioning axes |
| SFE Nut | High lead nut for larger travel per screw revolution | Fast feed, long-stroke motion, transfer equipment |
| SCM Nut | Cylindrical nut body without standard flange structure | Space-limited mounting or custom machine structure |
How to Match an SFS Ball Screw Nut
An SFS nut normally needs to match the original SFS screw shaft. Even if two nuts look similar, they may not work correctly if the screw diameter, lead, ball diameter, raceway profile or thread direction is different.
| Matching Item | What to Confirm |
|---|---|
| SFS Model | For example, SFS1605, SFS2020, SFS3220, SFS4020 or other SFS model marking. |
| Screw Diameter | Confirm the actual screw diameter, such as 16mm, 20mm, 25mm, 32mm, 40mm or 50mm. |
| Lead | Confirm lead value, such as 5mm, 10mm, 20mm, 32mm, 40mm or 50mm. |
| Nut Dimensions | Check nut outer diameter, flange size, nut length, mounting hole and oil hole position. |
| Thread Direction | Confirm right-hand or left-hand thread according to machine movement direction. |
| Screw Shaft Condition | If replacing an old nut, check whether the screw raceway is worn, rusted or damaged. |
Typical Applications
SFS ball screw nuts are mainly used in linear motion systems where compact nut size, smooth running and stable feed movement are important. The final model should be selected according to speed, stroke, load, support method and installation space.
CNC Equipment
Used for auxiliary feed axes, positioning tables, engraving machines and compact machine tool structures.
Laser Equipment
Suitable for laser cutting, laser marking and laser engraving equipment that requires smooth linear motion.
Automation Transfer Axis
Applied in loading, unloading, pick-and-place, sorting and repeated transfer systems.
Packaging Machinery
Used for feeding, pushing, filling, labeling and other repeated linear movement structures.
DLY Supply and Quality Support
DLY focuses on precision linear motion components including ball screws, ball nuts, linear guideways, linear shafts, support units and related motion parts. For SFS nut orders, our team can help confirm the model, nut dimensions, screw matching and whether the nut should be supplied alone or together with a new screw shaft.
| Model Confirmation | Confirm SFS nut model, screw diameter, lead, nut size and mounting dimensions according to drawing or sample. |
| Nut-Only Supply | Supply SFS nuts alone when the original screw shaft can be matched and remains in usable condition. |
| Matched Assembly | Provide SFS screw shaft and nut as a matched ball screw assembly for smoother installation. |
| End Machining | Support BK/BF, FK/FF, EK/EF or drawing-based shaft end machining for complete assemblies. |
| Export Packaging | Anti-rust oil, protective wrapping and suitable packaging for international delivery. |
Need help confirming an SFS nut?
Send us your SFS nut model, screw diameter, lead, drawing or old nut photos. DLY can help confirm whether the nut can be supplied alone or should be matched with a new screw shaft.
Email: export@dlybearing.com
FAQ
Q1: What are SFS nuts?
SFS nuts are silent type single ball screw nuts used with SFS series ball screw shafts. They are selected for compact installation, smooth running and stable linear motion.
Q2: Can I buy only the SFS nut without the screw shaft?
Yes. DLY can supply SFS nuts alone. However, the nut must match the screw diameter, lead, thread direction and raceway condition. For replacement orders, photos or drawings are recommended.
Q3: Are SFS nuts interchangeable with SFU nuts?
Not usually. SFS and SFU nuts have different structures and mounting dimensions. The correct nut type should be confirmed according to the screw model, nut dimensions and machine structure.
Q4: How do I confirm the correct SFS nut model?
Please provide the old nut marking, screw diameter, lead, nut photos, mounting dimensions or technical drawing. If the screw shaft is worn, a complete replacement assembly may be more suitable.
Q5: Can DLY provide SFS ball screw assemblies?
Yes. DLY can provide SFS nuts, SFS screw shafts, matched screw-nut assemblies, shaft end machining and export packaging according to your drawing or application requirement.
Q6: What applications are SFS nuts suitable for?
SFS nuts are used in CNC equipment, automation machines, laser equipment, packaging machinery, compact linear modules and positioning tables.
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