SFU2005 3.175mm Grinding Self-lubricating Heavy Duty Ball Screw


The SFU2005 3.175mm Grinding Self-lubricating Heavy Duty Ball Screw is a high-performance motion component that delivers low friction, high efficiency transmission, and unmatched precision. Ideal for heavy-duty applications, it offers high speed feed, micro feed, and axial rigidity. It’s customizable and available in different lengths and nut types.

SFU2005 3.175mm Grinding Self-lubricating Heavy Duty Ball Screw

The ZLV SFU2005 3.175mm Grinding Self-lubricating Heavy Duty Ball Screw is a high-quality, customizable product specifically designed to offer reliable, efficient and high-precision performance in various industrial applications. Its unique design characteristics ensure minimized friction loss, excellent transmission efficiency, and outstanding axial rigidity.


Specifications Value
Model SFU2005
Shaft Diameter (d/mm) 20
Lead (l/mm) 5
Steel Ball Diameter (mm) 3.175
Nut Size (D/A/B/L/W/H/X/Q/n) 36/58/10/51/47/44/6.6/M6/1*4
Load (Ca) 1551
Weight (Screw rod/M nut/pcs) 2.47/0.2
Unit Price USD (Screw rod/M nut/pcs) 7/6

SFU2005 3.175mm Grinding Self-lubricating Heavy Duty Ball Screw drawing

Ball Screw Features and Specifications

  1. Minimal friction loss and high transmission efficiency: The high efficiency of the ball screw is due to the rolling motion between the screw shaft and the screw nut. This feature results in a driving torque reduction to below 1/3, achieving a higher level of energy efficiency.
  2. High precision: The ZLV SFU2005 ball screw is produced using top-of-the-line machinery equipment. With a stringent control system for temperature and humidity, we ensure precision is thoroughly guaranteed.
  3. High-speed feed and micro-feed: The ZLV SFU2005 ball screw ensures a minimal starting torque, thus eliminating the crawling phenomenon observed in sliding motion. This feature makes precise micro-feed possible.
  4. High axial stiffness: The ZLV SFU2005 ball screw can be pre-pressured, enabling high rigidity by turning the axial clearance into a negative value. The enhanced rigidity is also due to the increased pressure applied to the balls, boosting the stiffness of the nut part when in actual use.
  5. Non-self-locking and transmission reversibility: The ZLV SFU2005 ball screw, unlike traditional screw models, does not have a self-locking feature, but it guarantees transmission reversibility.

Composition and Classification of Ball Screw

The ball screw comprises a screw, nut, steel ball, preload plate, reverser, and dust cover.


  1. Self-lubricating ball screw: This model has a removable oil removal device, eliminating the need for lubrication line systems and equipment, thereby reducing oil change and waste oil processing costs.
  2. Silent ball screw: This model has a special groove-shaped ball spacer between the balls, significantly reducing noise produced by ball collision, resulting in smoother and quieter operation.
  3. High-speed ball screw: This model offers high acceleration, high rigidity, high-speed feed, low vibration, and low noise. It is suitable for use in tool machines, fast feed, high-speed cutting center machines, and high-speed vertical load cutting centers.
  4. Heavy load ball screw: This model can withstand larger axial loads and is suitable for all-electric design machines, air compressors, semiconductor manufacturing devices, and forging manufacturing devices.

Parameters of the Ball Screw

  1. Nominal Diameter: This is the outer diameter of the screw, and the common specifications are 12, 14, 16, 20, 25, 32, 40, 50, 63, 80, 100, 120.
  2. Lead: The lead is the linear distance the nut moves when the screw rotates once. Related parameters include the nut movement speed and the linear thrust the ball screw can provide. The larger the lead, the faster the linear movement under the same rotation speed. The relationship and calculation methods are:

    Nut Movement Speed (v) = Screw Rotation Speed (r) * Lead (i)

    Ball Screw Thrust (F) = (2 * π * Motor Torque (T) * Transmission Efficiency (n)) / Lead (i)

  3. Length: Length concept includes overall length and thread length. Some manufacturers only calculate the total length, while some require the thread length. The thread length includes the total length of the thread and the effective stroke. The thread length = effective stroke + nut length + design margin (If a protective cover needs to be installed, consider the length of the compressed protective cover)
  4. Nut form: There are several forms of nuts, usually indicated by the first few letters in the model number. According to the flange form, there are round flanges, single-edge flanges, double-edge flanges, and no flange. According to the nut length, there are single nuts and double nuts. The main difference between a single nut and a double nut is that the latter can adjust the preload, and the latter’s price and length are roughly twice that of the former. The recommended form is the internal circulation double-edge flange single nut.
  5. Accuracy: The precision levels for ball screws are P1, P2, P3, P4, P5, P7, P10, and for Japan, Korea, and Taiwan in China, the JIS levels are C0, C1, C2, C3, C5, C7, C10. European standards are IT0, IT1, IT2, IT3, IT4, IT5, IT7, IT10.

By combining superior technology, top-notch materials, and advanced engineering, the ZLV SFU2005 3.175mm Grinding Self-lubricating Heavy Duty Ball Screw ensures reliable and efficient performance to cater to your industrial needs. Offering a range of customization options, we provide tailored solutions that meet your specific requirements. Enjoy the benefits of our commitment to quality, precision, and efficiency.

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