: To connect the screw shaft to your stepper or servo motor.
💡 Check if the screw ends are machined . Most sellers offer "standard machining" for BK/BF blocks. If they aren't machined, you'll need a lathe to fit them into the bearings yourself. If you'd like to narrow this down, let me know: What are you building ? (e.g., CNC, 3D printer, heavy lift) How much weight/load will it carry? Do you have a specific budget in mind?
Buying a ball screw is a critical decision for any precision motion project, from DIY CNC routers to industrial automation. To make the right purchase, you need to balance , accuracy grades , and mounting requirements . 1. Accuracy Grade (The "C" Class) ball screw buy
: Common sizes like 16mm (SFU16xx) or 20mm (SFU20xx) are standard. Larger diameters provide more rigidity and higher load capacity.
: Standard precision for high-quality industrial automation and precision tools. : To connect the screw shaft to your stepper or servo motor
: Ensure you account for the "travel distance" versus "total length." You lose length at both ends for support bearings and motor couplings. 3. Backlash and Preload
Ball screw accuracy is categorized by "C" grades. The lower the number, the higher the precision. If they aren't machined, you'll need a lathe
: This is the distance the nut moves in one full revolution. A 5mm lead (SFU1605) is a popular balance between speed and torque for hobbyist machines.