SFY2020 3.175mm Milled Mute Self Lubricating Heavy Duty Ball Screw
Welcome to the world of precision, efficiency, and robustness with ZLV’s SFY2020 3.175mm Milled Mute Self Lubricating Heavy Duty Ball Screw. Made with superior technology and high-quality materials, this product stands out for its performance and durability. In this article, we will dive deep into the product details, characteristics, composition, types, and the fundamental parameters including the length, nut form, and precision.
Specifications
| Parameter | Value |
|---|---|
| Model specifications | SFY2020 |
| Shaft diameter | 20mm |
| Lead | 20mm |
| Steel ball diameter | 3.175mm |
| Nut size (D, A, B, L, W, H, X,Q,n) | 39, 62, 10, 52, 50, 41, 5.5,M6,1.8*2 |
| Dynamic load rating Ca (kN) | 1387 |
| Screw rod weight per meter | 1.58kg |
| Nut weight per piece | 0.3kg |
| Unit price (USD) per meter | 10 |
| Unit price (USD) per piece | 11 |
Features
- Friction Loss and Efficiency:With numerous steel balls doing rolling motion between the screw shaft and the nut, the SFY2020 ensures high motion efficiency. The driving torque is less than a third of a traditional sliding screw pair, making it extremely power-efficient.
- High Precision:Made using advanced manufacturing equipment and strict environmental control over temperature and humidity, this ball screw ensures the highest level of precision.
- High-speed Feed and Micro-feed:Owing to its use of rolling motion, the SFY2020 has an extremely small starting torque and avoids crawling phenomena typical of sliding motion, allowing for precise micro-feeds.
- High Axial Rigidity:Preload can be applied to the SFY2020, enabling high rigidity due to negative axial clearance.
- Non-self-locking, Reversible Transmission:Unlike some screw systems, the SFY2020 ball screw cannot self-lock and is inherently reversible in its transmission direction.
Composition and Classification
A ball screw consists of a screw, nut, steel balls, preload piece, reverser, and dust preventer.
Based on the features and application, ball screws are generally classified as:
- Self-lubricating Ball Screw: It eliminates the need for a lubrication system, thus reducing oil-change and waste oil disposal costs.
- Mute Ball Screw: The use of a specially grooved ball spacer can suppress the noise generated by collisions between balls, ensuring quiet and smooth operation.
- High-speed Ball Screw: Characterized by high acceleration, high stiffness, fast feed, low vibration, and low noise.
- Heavy-duty Ball Screw: Capable of bearing larger axial loads, suitable for a variety of heavy-duty applications.
The SFY2020 falls into the self-lubricating and mute categories, providing quiet operation and reducing the need for lubrication.
Parameters
- Nominal Diameter:The nominal diameter refers to the outer diameter of the screw. In the case of SFY2020, it is 20mm.
- Lead:The lead refers to the linear movement distance of the nut when the screw rotates one full revolution. For the SFY2020, the lead is 20mm. The linear speed (v) of the nut can be calculated using the formula: v=r*i (where r is the rotation speed of the screw in r/s, and i is the lead in mm).
- The linear thrust (F) that the ball screw can provide is related to the lead (i) and can be calculated using the formula: F=（2πT*n）/i (where T is the torque provided by the motor in N·m, and n is the transmission efficiency, typically 85%-95% for ball screws).
- Length:The length refers to the total length and the threaded length. The threaded length consists of the total threaded length and the effective stroke (i.e., the theoretical maximum length of the nut’s linear movement). The threaded length = effective stroke + nut length + design allowance.
- Nut Form:Different nut forms are depicted by the first few letters in the model name. The SFY2020 uses a flanged single nut form, which cannot adjust preload but is roughly half the price and length of a double nut.
- Precision:Ball screws are classified into various precision grades. The SFY2020 adopts precision grades according to national and international standards.
In conclusion, ZLV‘s SFY2020 3.175mm Milled Mute Self Lubricating Heavy Duty Ball Screw offers a host of benefits in terms of power efficiency, high precision, and high axial rigidity. With its comprehensive features and versatility, this product is suitable for a wide array of applications, promising reliability, durability, and excellent performance.
