DFU4010 6.35mm Double Nut Grinding Heavy Duty Ball Screw


The DFU4010 6.35mm Double Nut Grinding Heavy Duty Ball Screw is a high-quality precision device, offering minimal friction loss and enhanced transmission efficiency. Its double nut design ensures exceptional rigidity, making it ideal for applications demanding high load-bearing capacity and precision.

DFU4010 6.35mm Double Nut Grinding Heavy Duty Ball Screw

The ZLV DFU4010 6.35mm Double Nut Grinding Heavy Duty Ball Screw is a high-efficiency, heavy-duty mechanical device that plays a pivotal role in motion control applications and precision machinery.


Model: DFU4010

Specification Description
Shaft diameter 40mm
Lead 10mm
Steel ball diameter 6.35mm
Nut size D = 63mm, A = 93mm, B = 14mm, L = 165mm, W = 78mm, H = 70mm,X = 9, Q = M8, n = 1*4
Load Ca = 5399
Weight Screw rod/M = 10kg, Nut/pcs = 1.2kg
Unit Price Screw rod/M = 21 USD, Nut/pcs = 30 USD

These specifications are standard, but ZLV can customize the ball screw based on specific customer requirements.

DFU4010 6.35mm Double Nut Grinding Heavy Duty Ball Screw drawing

Characteristics of Ball Screw

  1. Low friction loss, high transmission efficiency: The rolling friction between the ball screw and the nut ensures high motion efficiency, requiring less than 1/3 of the driving force needed for traditional sliding screw pairs.
  2. High Precision: The ball screw is produced using the most advanced machinery, ensuring the highest levels of precision due to strict controls over temperature and humidity during grinding, assembly, and inspection.
  3. High-speed feed and micro feed possible: With minimal starting torque and no creeping phenomenon like in sliding motion, the ball screw can achieve precise micro feeds.
  4. High axial stiffness: By applying preload, the axial clearance can be reduced to negative, thereby obtaining higher rigidity.
  5. Non-self-locking, Reversible Transmission: The ball screw has a non-self-locking feature, which means it can be driven bi-directionally.

Classification of Ball Screw

  1. Self-lubricating Ball Screw: This type has a removable oil device and doesn’t require a lubrication system, reducing oil change and waste oil treatment costs.
  2. Silent Ball Screw: The ball spacer with a special groove suppresses the noise produced by collisions between balls, ensuring quieter and smoother operation.
  3. High-Speed Ball Screw: This type is characterized by high acceleration, high rigidity, high-speed feed, low vibration, and low noise, suitable for quick feeding in machine tools and high-speed cutting centers.
  4. Heavy Load Ball Screw: Capable of withstanding large axial loads, suitable for electrically designed machines, compressors, semiconductor manufacturing devices, and forging manufacturing devices.


  1. Nominal Diameter: The outer diameter of the screw, standard sizes are 12, 14, 16, 20, 25, 32, 40, 50, 63, 80, 100, 120 mm.
  2. Lead: The distance the nut moves linearly when the screw rotates once. The lead is directly related to the moving speed of the nut and the linear thrust that the ball screw can provide. The larger the lead, the faster the linear movement at the same rotation speed.Essentially, Lead (i) is calculated using the formula v = ri, where v represents the nut’s linear speed, and r stands for the screw’s rotational speed.
  3. Length: Length concepts include total length and thread length. Some manufacturers only calculate total length, but some need to provide thread length.
  4. Nut Form: There are many nut forms on product samples of various manufacturers. The first few letters in the general model usually represent the nut form.
  5. Accuracy: Ball screws are classified into precision levels P1, P2, P3, P4, P5, P7, P10 in China, while JIS levels (C0, C1, C2, C3, C5, C7, C10) are adopted in Japan, South Korea, and Taiwan, China. European standards use IT0, IT1, IT2, IT3, IT4, IT5, IT7, IT10.

In conclusion, the ZLV DFU4010 6.35mm Double Nut Grinding Heavy Duty Ball Screw is a high-performance and versatile product that meets the diverse requirements of advanced motion control systems.

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