Choosing the right ball screw is key for accurate CNC motion, smooth operation, and long service life. This guide highlights five reliable ball screw kits that fit a range of CNC builds, from compact mills to mid-size gantries. Each option includes end supports, ball nut housings, and coupling components to help you assemble a robust linear drive. Below, compare lengths, pitch, and notable features to find the best match for your machine and budget.
| Product | Brand | Length | Lead / Pitch | Notes | Amazon Link |
|---|---|---|---|---|---|
| CHUANGNENG SFU1605 1500MM Kit | CHUANGNENG | 1500 mm | 5 mm | End supports, housing, coupling included | View |
| GUWANJI SFU1605 1500MM Kit | GUWANJI | 1500 mm | 5 mm | Shiny finish, end supports, full kit | View |
| BEVDICNC SFU1605 1000MM Kit | BEVDICNC | 1000 mm | 5 mm | High precision, low noise, easy installation | View |
| CHUANGNENG SFU1605 RM1605 1000MM Kit | CHUANGNENG | 1000 mm | 5 mm | End machined, reinforced for rigidity | View |
| CNCYEAH SFU1605 800MM Kit | CNCYEAH | 800 mm | 5 mm | Balanced for compact machines | View |
Note: All listed items use a 16 mm diameter with a 5 mm lead, suitable for mid- to large-scale CNC setups. Each kit typically includes a ball screw, ball nut housing, end supports, and a shaft coupler to simplify mounting and alignment.
CHUANGNENG SFU1605 1500MM Ball Screw Kit
The CHUANGNENG SFU1605 1500MM kit is designed for longer axis travels in CNC panels and gantries. The package typically includes an SFU1605-1500MM ball screw, BK12/BF12 end supports, a BR shaft coupler, and a DSG16H ball nut housing. Benefits include high service life due to low friction and reduced operation noise, making it suitable for automated machining tasks in electronic, medical, and factory automation environments.
GUWANJI 1500MM SFU1605 Ball Screw Kit
GUWANJI offers a complete 1500 mm RM1605 assembly featuring end supports BK/BF12, a DSG16H nut housing, and a 6.35×10 mm shaft coupler. A shiny surface finish and precision alignment help extend the life cycle of the ball screw. The design emphasizes low wear and easy mounting, suitable for X-Y tables and robotic components in CNC workflows.
BEVDICNC SFU1605-1000MM Kit
BEVDICNC’s SFU1605-1000MM kit provides 1000 mm of travel with a 16 mm diameter lead screw. The set includes BK/BF end supports and a ball nut housing with a shaft coupler. Made from high-strength 100Cr6 steel with an induction-hardened finish, this kit targets high precision, low noise, and longevity. It is designed for vertical or horizontal positioning in CNC machines and 3D milling setups.
CHUANGNENG SFU1605 RM1605 1000MM Kit
This 1000 mm variant from CHUANGNENG emphasizes high stiffness and accuracy, with smooth and ultra-quiet bearings for rails. The compact design supports easy mounting and dismounting, making it a versatile choice for mid-sized CNC machines and automated tooling applications that require reliable linear motion with minimal maintenance.
CNCYEAH SFU1605 800MM Kit
CNCYEAH’s 800 mm SFU1605 kit is built for compact CNC machines and smaller automation projects. It includes the ball screw, nut housing, BK12/BF12 end supports, and a coupler. The kit emphasizes high static and dynamic rigidity, non-slip performance, and reduced heat generation, contributing to dependable, repeatable positioning on shorter axes.
Buying Guide: Key Purchase Considerations
- Length and travel: Match the axis travel length with your machine’s required span. Longer screws can increase rigidity but add weight and less convenient mounting in compact setups.
- Lead and pitch: A 5 mm lead is common for CNC machines, offering a balance of speed and precision. Larger leads increase speed but may reduce stiffness slightly; consider your feed rate and load requirements.
- End supports and housings: BK/BF12 end supports and a compatible nut housing ensure proper alignment and preload. Verify compatibility with your existing rails or linear guides.
- Material and finish: Look for induction-hardened steel (e.g., 60 HRC) for wear resistance and longevity. A smooth surface finish reduces friction and vibration.
- Installation and maintenance: Choose kits that include all mounting hardware and a straightforward assembly process. Consider anti-backlash features to improve repeatability.
- Noise and heat: Low-noise operation and efficient lubrication reduce heat buildup and extend service life, especially in continuous-running CNC applications.
- Scale and compatibility: Ensure screw diameter, pitch, and end-mittings align with your existing components (rails, motors, and couplers) to avoid redesigns.
Performance Perspectives
For high-precision tasks like engraving, milling, or measurement instruments, longer ball screws (1500 mm) with tight tolerances offer improved accuracy over longer travels. End supports and nut housings contribute to repeatable positioning and reduce backlash. In compact builds, 800–1000 mm options provide reliable rigidity without excessive weight. Materials and finishing across brands influence wear resistance and service life, while installation ease affects setup time and machine downtime.
Assembly and Maintenance Considerations
When assembling, ensure clean, dust-free environments during installation. Align the ball screw coupling squarely with the motor shaft to avoid misalignment that could cause premature wear. Periodic lubrication and inspection of end supports help maintain performance. If vertical mounting is used, check for gravity effects on preload adjustments and ensure anti-backlash features are properly engaged.