SFY4040 6.35mm Milled Mute Self Lubricating Heavy Duty Ball Screw
ZLV introduces the SFY4040 6.35mm Milled Mute Self Lubricating Heavy Duty Ball Screw, a top-tier product tailored to deliver outstanding performance. Its construction and features are designed to cater to a wide range of applications, from high-speed machining centers to precision measuring equipment.
Specifications and Dimensions
The following table displays the detailed specifications and dimensions of the SFY4040 Ball Screw:
| Parameter | Specification |
|---|---|
| Model | SFY4040 |
| Shaft Diameter (d/mm) | 40 |
| Lead (I/mm) | 40 |
| Steel Ball Diameter (mm) | 6.35 |
| Nut size (D, A, B, L, W, H, X, Q,n) | 73, 114, 15, 99, 93, 75, 11, M6,1.8*2 |
| Dynamic Load (Ca) | 4831 |
| Screw Rod Weight (per meter) | 1.58 kg |
| Nut Weight (per piece) | 0.3 kg |
| Screw Rod Price (per meter) | 37 USD |
| Nut Price (per piece) | 15 USD |
Customization is available for specific requirements in different applications, ensuring that this product will perfectly fit into your equipment.
Features
The SFY4040 Ball Screw possesses remarkable features that are instrumental to its high efficiency and precision:
- Low Friction Loss, High Transmission Efficiency: The ball screw reduces friction losses and increases transmission efficiency by enabling numerous steel balls to perform rolling motion between the screw shaft and nut.
- High Precision: The ball screw is consistently manufactured using the highest standard of machinery, ensuring strict control over temperature and humidity for a high degree of precision.
- High-Speed Feed and Micro Feeding: Thanks to the rolling movement of the steel balls, the SFY4040 Ball Screw demands a minimal starting torque, thereby avoiding creeping phenomena and ensuring accurate micro feeding.
- High Axial Rigidity: The application of preload makes the axial clearance negative, resulting in increased rigidity. By applying pressure to the steel balls, rigidity is further enhanced in the nut part of the ball screw.
- No Self-Locking, Reversible Transmission: The SFY4040 Ball Screw provides non-self-locking and reversible transmission, offering more flexibility in various applications.
Ball Screw Types and Composition
The SFY4040 Ball Screw consists of a screw, nut, steel balls, pressure plates, reverser, and dustproof device.
Types of ball screws:
- Self-lubricating ball screws: These have detachable oil removal devices, eliminating the need for a lubrication pipeline system and equipment, which reduces oil change and waste oil disposal costs.
- Silent ball screws: Silent ball screws operate on a unique principle. Manufacturers insert a specially grooved ball spacer between the balls. This spacer suppresses the noise that collisions between balls typically produce, resulting in quieter and smoother ball screw movement.
- High-speed ball screws: They feature high acceleration, high rigidity, high-speed feed, low vibration, and low noise. They are used in the fast feed of machine tools, high-speed cutting center machines, and high-speed longitudinal cutting centers.
- Heavy-duty ball screws: These can withstand larger axial loads and are suitable for all-electric design machines, air compressors, semiconductor manufacturing devices, and forging manufacturing devices.
In distinguishing between rolled and ground ball screws, the precision of rolled screws is relatively low and suitable for situations where precision requirements are not very high. On the other hand, as implied by its name, the ground ball screw has higher precision and is suitable for applications where high precision is required.
Parameter Details
- Nominal Diameter: The nominal diameter of the screw is 40 mm.
- Lead: The lead, which is the linear distance the nut moves per revolution of the screw, is 40 mm. The lead directly affects the speed of the nut’s linear motion and the linear thrust that the ball screw can provide. The relationship between these parameters can be calculated with the following equations:
- v=r*i, where ‘v’ is the speed of the nut (mm/s), ‘r’ is the rotation speed of the screw (r/s), and ‘i’ is the lead (mm).
- F=(2πT*n)/i, where ‘F’ is the screw thrust (N), ‘T’ is the torque provided by the motor (N·m), ‘n’ is the transmission efficiency (85%-95% for ball screws), and ‘i’ is the lead (m).
- Length: The total length and thread length are key dimensions. The thread length consists of the thread’s full length, the effective stroke (maximum theoretical length of linear movement), the nut length, and a design allowance.
- Nut Form: The SFY4040 Ball Screw is equipped with a standard nut, with the main difference between single and double nuts being the ability of the latter to adjust preload.
- Precision: The SFY4040 Ball Screw complies with precision grades P1 to P10, with each grade catering to different precision requirements.
ZLV’s SFY4040 6.35mm Milled Mute Self Lubricating Heavy Duty Ball Screw is a state-of-the-art product that assures high performance, precision, and efficiency. It brings both standard and customized solutions to meet a variety of application needs. With ZLV, you receive not only a top-quality product but also a commitment to excellence.
