CSK Motions
SFU Rolled Screw
SFU Rolled Screw
SFU lead rolled screws are formed by rotating and extruding round bar material into threads through a cold rolling process, without the need for machining.
Product Features
√Efficient transmission
√Durable and load-resistant
√Easy installation
√Precise operation
√High rigidity
√Optimized design
SFU Rolled Screw Structures
Click the download button to get the more details about the ball screw.
Material and Hardness
| Part Name | Material | Heat Treatment Method | Hardness (HRC) |
| Precision-grade lead screw | 50CrMo4 QT / equivalent to | Medium frequency heat treatment | 58-62 |
| Rolled screw | S55C/equivalent to | Medium frequency heat treatment | 58-62 |
| Nut | SCM420H/equivalent to | Carburizing heat treatment | 58-62 |
SFU Rolled Screw Model
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The model of SFU linear rolled screw usually consists of multiple parts to indicate its different specifications and characteristics.
Lead Accuracy
According to ISO 3408-3, the lead accuracy of SFU ground ball screws is defined as the cumulative lead error over any stroke within the effective thread length.
For applications requiring even higher precision, ground ball screws are recommended.
