SFS2505 3.175mm Quiet Heavy Duty Ball Screw


The SFS2505 3.175mm Quiet Heavy Duty Ball Screw is a high-performance mechanical component designed for smooth, efficient transmission. It’s ideal for applications requiring precise movement control. Made with top-grade materials, it boasts low friction loss, high speed, and micro-feeding capabilities, while offering superior axial rigidity and reversibility. This ball screw is also customizable to fit different industrial needs.

SFS2505 3.175mm Quiet Heavy Duty Ball Screw

Welcome to the product guide for ZLV SFS2505 3.175mm Quiet Heavy Duty Ball Screw. This comprehensive guide will provide you with everything you need to know about our product, from its specifications and basic parameters to its key features. Customization is also available to meet your specific needs.


The ZLV SFS2505 is a heavy-duty ball screw designed for high performance in demanding industrial applications. Thanks to the high-quality materials and precision manufacturing, the ZLV SFS2505 ball screw provides exceptional efficiency, precision, high-speed feed, and axial stiffness.


Below are the specific parameters of the ZLV SFS2505 3.175mm Quiet Heavy Duty Ball Screw:

Parameter Value
Model SFS2505
Shaft diameter 25mm
Lead 5mm
Steel ball diameter 3.175mm
Nut size D: 40, A: 62, B: 10, L: 40, W: 51, H: 48, X: 6.6, Q: M6, n: 3.8*1
Load 1724 (Ca)
Weight Screw rod: 3.8 kg/M, Nut: 0.3 kg/pcs
Unit Price (USD) Screw rod: $7.4/M, Nut: $10/pcs

Please note: these specifications can be customized to meet your specific requirements.

SFS2505 3.175mm Quiet Heavy Duty Ball Screw drawing

Key Features of Ball Screws

Ball screws like our ZLV SFS2505 offer several distinctive features that set them apart from traditional sliding screw systems:

  1. Low friction loss, high transmission efficiency: The rolling movement of many balls between the screw shaft and the nut results in high motion efficiency, reducing the driving torque to less than 1/3 of that required for sliding screw systems.
  2. High precision: Our ball screws are produced using the most advanced mechanical equipment in the world, under stringent control of temperature and humidity. This ensures a high degree of precision.
  3. Capability for high-speed feeding and micro feeding: Due to the rolling motion of the balls, the startup torque is very small. This allows for precise micro feeding without any crawling phenomena.
  4. High axial stiffness: Preload can be applied to the ball screw, making axial clearance negative and thus providing high stiffness.
  5. Non-self-locking, reversible transmission: Unlike some other mechanical systems, ball screws are not self-locking and provide a reversible transmission.

Components and Classification of Ball Screws

Ball screws consist of a screw, nut, steel ball, pressure plate, reverser, and dustproof device. They can be classified into:

  1. Self-lubricating ball screw: Has a removable oil removal device, eliminating the need for a lubrication system, and reducing oil change and waste oil handling costs.
  2. Quiet ball screw: A special groove between the balls reduces noise generated by ball collision, ensuring quieter and smoother operation.
  3. High-speed ball screw: Offers high acceleration, high stiffness, high-speed feed, low vibration, and low noise. Suitable for fast feed in machine tools, high-speed cutting in mold centers, etc.
  4. Heavy-duty ball screw: Can withstand large axial loads, suitable for all-electric design machines, air compressors, semiconductor manufacturing equipment, and forging manufacturing equipment.

Parameters of the Ball Screw

  1. Nominal diameter: The outer diameter of the screw. Common specifications include 12, 14, 16, 20, 25, 32, 40, 50, 63, 80, 100, 120.
  2. Lead: The distance the nut moves linearly for one revolution of the screw. Related parameters are the movement speed of the nut and the linear thrust that the ball screw can provide. The larger the lead, the faster the linear motion speed at the same rotation speed. The relationship between lead and screw thrust is F = (2πT*n)/i, where F is the screw thrust, T is the torque provided by the motor, n is the transmission efficiency (85%-95% for ball screws), and i is the lead.
  3. Length: This includes the overall length and thread length. Some manufacturers only calculate the overall length, but some need to provide the thread length. Thread length includes the total length of the thread and the effective stroke.
  4. Nut form: There are several types of nut forms, generally indicated by the first few letters in the model. Common types include round flange, single edge flange, double edge flange, and flangeless.
  5. Precision: According to domestic classification, the accuracy level of ball screws is P1, P2, P3, P4, P5, P7, P10. In Japan, South Korea, and Taiwan, China, JIS level is adopted, namely C0, C1, C2, C3, C5, C7, C10. European countries adopt IT0, IT1, IT2, IT3, IT4, IT5, IT7, IT10.

ZLV SFS2505 3.175mm Quiet Heavy Duty Ball Screw is designed for applications demanding the highest level of precision and durability. Customize your specifications or reach out to our team to find out more about our products.

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