DFU2505 Ball Screw

DFU2505 Ball Screw

Product descriptions

Configuration: 25mm Diameter / 5mm Lead / Double Nut (DFU).
The Industry Standard: The preferred solution for heavy-duty precision CNC machinery.
Zero Backlash: Preloaded Double Nut design eliminates axial play and machining chatter.

Performance:

• Rigidity: 25mm shaft prevents deflection on long axes and under heavy cutting loads.
• Resolution: 5mm pitch provides a standard resolution of 0.025mm/step.

Applications: Large CNC routers, mill retrofits, high-force positioning stages, and demanding industrial automation.

Performance Characteristics

Heavy-Duty Rigidity & Zero-Backlash Precision
The DFU2505 Ball Screw is engineered for applications where high load capacity meets absolute precision. While single-nut screws are sufficient for basic transport, the DFU2505 is built for machining. It combines a robust 25mm shaft with a preloaded Double Nut to create a drive system capable of withstanding the significant counter-forces generated during heavy metal cutting.

Elimination of Chatter and Backlash
By preloading the two nut halves against each other, the DFU2505 completely removes axial play. This structural rigidity allows for "Climb Milling" and rapid direction reversals without lost motion. Furthermore, the stiffness of the 25mm shaft prevents deflection (bowing) and vibration (whipping), ensuring that tight tolerances are maintained across the entire length of the machine bed.

High Mechanical Advantage
The 5mm lead functions as a force multiplier, enabling standard servo motors to drive heavy gantries or lift massive Z-axis headstocks with ease. Combined with the efficiency of the low-friction recirculating ball design, this assembly ensures a long service life even under continuous heavy-duty operation.

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