DFU2004 Ball Screw

DFU2004 Ball Screw

Product descriptions

The DFU2004 Ball Screw Assembly is a heavy-duty, high-resolution linear motion component engineered to deliver the perfect combination of structural rigidity and absolute zero-backlash positioning.

Featuring a rigid 20mm shaft, this actuator is built to prevent deflection under heavy loads. This stable platform is paired with a preloaded Double Nut system to eliminate axial play. Additionally, the fine 4mm lead offers superior resolution (0.02mm) and high torque transmission. The DFU2004 is the ideal choice for large-scale CNC machinery, precision grinding machines, heavy Z-axis stages, and optical measurement equipment where maximum stiffness and the finest control are mandatory.

Key Engineering Advantages

1.Superior Positional Resolution:
Utilizing a standard stepper motor, the 4mm lead achieves a resolution of 0.02mm per step, compared to 0.025mm for standard 5mm pitch screws. This 20% gain in mechanical resolution significantly reduces "step ripple," resulting in superior surface finishes in precision grinding and milling operations.

2.Zero-Backlash Construction:
The Double Nut configuration utilizes a precision spacer to tension the two nut halves against each other. This mechanically eliminates all axial play. When combined with the fine 4mm lead, this creates a system with exceptionally high positional holding stiffness and repeatability.

3.Enhanced Mechanical Advantage:
The fine 4mm lead functions as a force multiplier. It enables the DFU2004 to generate higher axial thrust than a standard 5mm screw using the same motor torque, making it an excellent choice for heavy-duty Z-axis lifting applications.

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