



Simkawa
DFU CNC Ballscrews
DFU ballscrews offer smooth motion, low friction, and high positioning accuracy. Perfect fit for CNC tools and high-speed linear actuators.
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DFU CNC Ballscrews Features
- High Lead Design
The DFU series adopts a large lead structure, which is suitable for high-speed linear displacement transmission, significantly improving the response speed and work efficiency of the equipment.
- Applicable to high-speed processing equipment
Especially suitable for CNC processing centers, high-speed engraving machines, automatic feeding systems and other automation equipment with high requirements for rapid positioning.
- High efficiency and low friction
The ball transmission structure has a small friction coefficient, high transmission efficiency, reduced energy consumption and heat generation, and extended system life.
- High-precision positioning
Precision thread processing technology ensures small axial clearance and high repeated positioning accuracy to meet precision processing needs.

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Specifications of DFU Ballscrew Drive
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Maximum Manufacturing Length of CNC ballscrews
Diameter | Length |
d≤20mm | Below 3000mm |
25mm≤d≤50mm | Below 6000mm |
63mm≤d≤80mm | Below 7000mm |
Recommended length standard:
Aspect ratio Length/diameter:
Best: 1:40
General: 1:60
Ultimate: 1:80
SFU1610 CNC Ballscrews
- SFU1610 is a standard external circulation ball screw. The "16" in the model number indicates that the nominal diameter of the screw is 16mm, and the "10" indicates that the lead is 10mm.
- The external circulation design enables it to have a higher load capacity and better heat dissipation performance.
- The lead is larger (10mm), which is suitable for occasions that require fast movement.

Lubrication Steps
- When using a ball screw actuator, it must be fully lubricated. Insufficient lubrication will increase wear, cause failures or shorten service life.
- When lubricating a DFU ball screw with grease, use a lithium soap-based grease with a dynamic viscosity of 30~140mm²/s (40°C).
- When lubricating with oil, use a lubricant registered as ISO VG32~100.
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