YZXQ :: Ball Screw Nuts
SFI Series Cylindrical Ball Screw Nuts
Flangeless cylindrical nuts for housings machined by the machine builder.
SFI1604-4 – SFI8010-6Overview
SFI nuts use a plain cylindrical body without a flange, so the customer bores and clamps the nut in its own housing. They suit compact carriages and custom axis layouts where a flange would interfere.
Key Features
- Cylindrical body, no flange
- Internal recirculation
- Screw diameters from 16 mm to 80 mm
- Clamped or keyed mounting
Technical Specifications
Reference dimensions per model — request the full datasheet
| Model | Shaft d (mm) | Lead (mm) |
|---|---|---|
| SFI1604-4 | 16 | 4 |
| SFI1605-3 | 16 | 5 |
| SFI1605-4 | 16 | 5 |
| SFI1610-3/2 | 16 | 10 |
| SFI2005-3 | 20 | 5 |
| SFI2005-4 | 20 | 5 |
| SFI2010-3/2 | 20 | 10 |
| SFI2505-3 | 25 | 5 |
| SFI2505-4 | 25 | 5 |
| SFI2510-4/2 | 25 | 10 |
| SFI2510-4 | 25 | 10 |
| SFI3205-4 | 32 | 5 |
| SFI3210-4 | 32 | 10 |
| SFI4005-4 | 40 | 5 |
| SFI4010-4 | 40 | 10 |
| SFI5010-4 | 50 | 10 |
| SFI6310-4 | 63 | 10 |
| SFI8010-4 | 80 | 10 |
| SFI8010-6 | 80 | 10 |
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 outside diameter
- 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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