Product Title: SFU1605 Ball Screw (700mm) with BK/BF12 End Machining & Flange Nut
Description:
The SFU1605 Precision Ball Screw Set is engineered for high-accuracy linear motion control in CNC routers, 3D printers, and automated industrial machinery. Featuring a 700mm overall length and a 16mm outer shaft diameter, this ball screw comes standard with pre-machined ends designed specifically for BK12 and BF12 bearing support blocks. Paired with an SFU1605-3 flanged ball nut, this assembly delivers low friction, smooth rolling motion, and high rigidity under heavy axial loads.
Key Features:
- Standard BK/BF12 End Machining: Factory-machined ends fit standard BK12 fixed and BF12 floating bearing support units.
- Precision SFU1605 Profile: Features a 16mm shaft diameter and 5mm lead pitch for smooth, accurate linear translation.
- Heavy-Duty SFU1605-3 Flange Nut: Designed with a 48mm outer flange, 28mm body diameter, and 6-hole mounting pattern for rigid mounting.
- Integrated Lubrication Port: Includes a pre-threaded M6 oil port for easy grease nipple installation and routine maintenance.
- Versatile 700mm Total Length: Optimal length suited for medium-sized CNC axes, linear actuators, and precision machinery builds.
Technical Specifications:
| Parameter | Specification | Source / Notes |
| Screw Model | SFU1605 (1605 Series) | Nominal diameter 16mm, 5mm pitch |
| Ball Nut Model | SFU1605-3 | Single flange ball nut |
| Total Overall Length | 700 mm | Specified length |
| Shaft Diameter | 16 mm | Main screw diameter |
| End Machining Type | Fits BK12 / BF12 Bearing Blocks | Standard end configuration |
| Fixed End Thread | M12 x 1 mm | Thread length 14 mm |
| Fixed End Journal Diameter | 12 mm | Bearing journal |
| Fixed End Drive Shaft | 10 mm diameter x 15 mm length | Motor coupling interface |
| Supported End Journal | 10 mm diameter | BF12 bearing seat |
| Supported End Retaining Slot | 1.15 mm circlip groove | Retaining ring groove |
| Nut Body Diameter | 28 mm | Outer barrel diameter |
| Nut Overall Length | 42 mm | Total length including flange |
| Flange Outer Diameter | 48 mm | Flange width |
| Flange Flat Width | 40 mm | Trimmed flange width |
| Flange Thickness | 10 mm | Mounting flange depth |
| Flange Bolt Circle (PCD) | 38 mm | Mounting hole center diameter |
| Nut Mounting Holes | 6x Ø6~5.5 mm | Mounting hole pattern |
| Lubrication Port | M6 Thread | Integrated grease fitting port |
Package Contents:
- 1x SFU1605 Ball Screw (700mm, BK/BF12 end machined)
- 1x SFU1605-3 Flanged Ball Nut