
YZXQ :: Ball Screw Nuts
SFU Series Flanged Ball Screw Nuts
Single flanged ball nuts with internal recirculation for general CNC axes.
SFU1204-4 – SFU10020-4Overview
SFU nuts use a round flange with mounting holes and internal ball recirculation, the standard choice for positioning axes up to 100 mm screw diameter. The model code gives the screw diameter and lead, for example SFU1605-4 is a 16 mm screw with 5 mm lead and a 4-turn circuit.
Key Features
- Round flange mounting
- Internal recirculation
- Screw diameters from 12 mm to 100 mm
- Anti-backlash preload available
Technical Specifications
Reference dimensions per model — request the full datasheet

| Model | Shaft d (mm) | Lead (mm) |
|---|---|---|
| SFU1204-4 | 12 | 4 |
| SFU1604-4 | 16 | 4 |
| SFU1605-3 | 16 | 5 |
| SFU1605-4 | 16 | 5 |
| SFU1610-3/2 | 16 | 10 |
| SFU2005-3 | 20 | 5 |
| SFU2005-4 | 20 | 5 |
| SFU2010-3/2 | 20 | 10 |
| SFU2505-3 | 25 | 5 |
| SFU2505-4 | 25 | 5 |
| SFU2510-4 | 25 | 10 |
| SFU2510-4/2 | 25 | 10 |
| SFU3205-4 | 32 | 5 |
| SFU3206-4 | 32 | 6 |
| SFU3210-4 | 32 | 10 |
| SFU4005-4 | 40 | 5 |
| SFU4010-4 | 40 | 10 |
| SFU5010-4 | 50 | 10 |
| SFU5020-4 | 50 | 20 |
| SFU6310-4 | 63 | 10 |
| SFU6320-4 | 63 | 20 |
| SFU8010-4 | 80 | 10 |
| SFU8010-6 | 80 | 10 |
| SFU8020-4 | 80 | 20 |
| SFU10020-4 | 100 | 20 |
Full datasheets with exact dimensions, load ratings and tolerances are available on request — contact us with your model list for the complete specification.
Material Options
- GCr15 nut body
- Bearing steel balls
- Polymer recirculation insert
Customization Options
- Custom flange drilling
- Preload class to drawing
- Wiper and seal kits
- Screw and support kit supply
RFQ
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Reference dimensions per model — request the full datasheet
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