SFU3210 6.35mm Grinding Self-lubricating Heavy Duty Ball Screw
This article introduces the SFU3210 6.35mm Grinding Self-lubricating Heavy Duty Ball Screw by ZLV. This ball screw is a mechanical linear actuator that translates rotational motion to linear motion with low friction. Engineered to offer high precision, efficient transmission, and superior load bearing, it has a myriad of applications in industries including robotics, automation, and machinery.
Specifications
The dimensions of the ball screw are further elaborated in the table below.
| Parameter | Dimension |
|---|---|
| Model | SFU3210 |
| Shaft Diameter(d/mm) | 32mm |
| Lead (I/mm) | 10mm |
| Steel Ball Diameter | 6.35mm |
| Nut Size (D/A/B/L/W/H/X/Q,n) | 50mm/80mm/12mm/90mm/65mm/62mm/9mm/M6,1*4 |
| Load (Ca) | 4805N |
| Weight | 6kg/m (Screw rod), 0.5kg/pcs (Nut) |
| Unit Price | 11 USD for Screw Rod/M, 9 USD for Nut/Pcs |
Note: The product can be customized according to specific needs, and prices are negotiable depending on order quantity and custom specifications.
Key Features and Advantages
The SFU3210 ball screw incorporates several key features and advantages:
- Low Friction, High Efficiency: The rolling motion between the screw and the nut offers high operational efficiency. It requires less than 1/3 of the driving torque compared to traditional sliding screw pairs, making it an energy-efficient solution.
- High Precision: Produced using top-tier mechanical equipment, the ball screw is manufactured in a strictly controlled environment, ensuring high precision and accuracy in its performance.
- High-Speed Feed and Micro Feed: The minimal starting torque prevents any crawling phenomenon, ensuring precise micro feeds.
- High Axial Rigidity: The ball screw can be preloaded to reach a negative axial gap, resulting in higher rigidity. This feature enhances the stiffness of the nut part when used in mechanical devices.
- Irreversible Transmission: Unlike some traditional screws, the ball screw doesn’t self-lock, providing the benefit of reversible transmission.
Components and Types
A ball screw is made up of several components: a screw, a nut, steel balls, preload plates, reverse devices, and dustproof devices.
This product falls under the category of self-lubricating ball screws, which feature a removable oil device eliminating the need for a lubrication system and reducing oil and waste treatment costs.
Other types of ball screws include:
- Silent Ball Screws: These screws feature a specially grooved ball spacer to suppress the noise generated from ball collisions, ensuring a quieter, smoother operation.
- High-Speed Ball Screws: Characterized by high acceleration, high rigidity, fast feeding, low vibration, and low noise, they are used in rapid feed of tool machines, high-speed cutting center machines, and high-speed longitudinal cutting centers.
- Heavy Load Ball Screws: They can bear larger axial loads, suitable for all-electric design machines, air compressors, semiconductor manufacturing devices, and forging manufacturing devices.
Parameter Definitions and Calculations
- Nominal Diameter: The outer diameter of the screw, with common specifications ranging from 12 to 120 mm.
- Lead: The distance that the nut moves linearly when the screw rotates one round. The lead affects the nut’s moving speed and the linear thrust the ball screw can provide. The larger the lead, the faster the linear movement under the same rotational speed.
- Length: There are two notions of length – the overall length and the thread length. Some manufacturers require the provision of thread length, which includes total thread length and effective stroke.
- Nut Format: Several nut formats can be found in product samples from various manufacturers. These are divided based on the flange style, nut length, and their ability to adjust the preload.
- Precision: Ball screws are classified into precision grades such as P1, P2, P3, P4, P5, P7, P10. Other countries like Japan, Korea, and Taiwan use the JIS grade – C0, C1, C2, C3, C5, C7, C10. European countries follow the IT0, IT1, IT2, IT3, IT4, IT5, IT7, IT10 standards.
Lead and Ball Screw Thrust Relationship
The lead of the ball screw and the thrust it can provide have a close relationship. The calculation is as follows:
F=（2πT*n）/i
- F: Ball screw thrust (N)
- T: Torque provided by the motor (N·m)
- n: Transmission efficiency (Ball screw transmission efficiency is generally 85%-95%)
- i: Lead (m)
This relationship enables the accurate calculation of thrust in accordance with the machine’s requirements.
With all the information above, the SFU3210 6.35mm Grinding Self-lubricating Heavy Duty Ball Screw by ZLV stands as a robust solution for industries requiring precision linear motion and high load capabilities. With options for customization, it offers the flexibility to meet the specific needs of various applications.
