Solid Shaft Flange Magnetic Fluid Seal Device SR50
Category: Solid-axis double-flange type
Overview
Technical Specifications
This product is a high-performance magnetorheological fluid seal assembly specifically developed for high-speed operating environments, addressing both waterproof sealing and customized adaptation requirements. With core attributes of high-speed load-bearing capability, IP-rated water resistance, and leak-free performance, it also emphasizes compact design and robust operational adaptability, making it ideally suited for a wide range of non-standard applications in precision machinery, automation equipment, and specialized systems. It provides reliable hardware support for sealing and protection, as well as stable power transmission, in high-speed rotating components.
Key features:
1. High-speed, stable operation
Employing high-performance ferrofluids and an optimized magnetic circuit design, this solution achieves contactless sealing with zero frictional losses, enabling stable high-speed operation, smooth running, reduced equipment energy consumption and wear, and enhanced transmission accuracy—far surpassing the high-speed performance capabilities of conventional sealing devices.
2. IP-rated waterproof sealing
The integrated waterproof structure, leveraging the zero-leakage properties of magnetorheological fluids, achieves an IP65 or higher waterproof rating, effectively blocking water, water vapor, and contaminants. This design is well-suited for long-term operation in humid environments, addressing the common shortcomings of conventional sealing and waterproofing solutions.
3. Zero leakage, no pollution
Magnetorheological fluids form a sealing barrier, achieving complete leak-free operation under both static and dynamic conditions, with no organic volatiles or abrasive particles, thereby preventing contamination of equipment and the environment and making them suitable for high-cleanliness, precision applications.
4. Stable, durable, and maintenance-free
Made from high-quality, corrosion-resistant and thermal-shock-resistant materials, it boasts excellent impact resistance, requires no wear parts, and offers a long service life. Under normal operating conditions, it is virtually maintenance-free over the long term, thereby reducing maintenance costs and downtime losses.
5. High reliability and strong compatibility
It features a built-in stable permanent-magnet magnetic circuit and a reliable structural design, with bearings being the only wear-prone components. The device is compatible with a wide temperature range of –20°C to 120°C, offers customizable pressure-rating capabilities, and is suitable for operation under various service conditions.
Typical applications:
1. Precision machinery sector: high-speed spindles, precision motors, CNC equipment, robotic joints, and more—designed to meet non-standard dimensional requirements and high-precision transmission needs.
2. Automation and Specialized Equipment: Waterproof, high-speed, non-standard equipment such as drive components for automated production lines, underwater robots, specialized electric motors, and marine propulsion systems.
3. Semiconductors and Research Equipment: semiconductor manufacturing equipment, vacuum coating auxiliary sealing, and high-speed rotating devices for research applications—meeting non-standard requirements for leak-free operation and ultra-high cleanliness.
4. New Energy and Water Treatment Equipment: high-speed rotors for new energy equipment, transmission components for water treatment, and mechanical seals for wastewater treatment—designed to meet non-standard operating conditions involving humidity and corrosion.
5. Aerospace and Medical Devices: Small aerospace sealing components and high-speed assemblies for precision medical instruments require custom dimensions, high reliability, and waterproof performance.
6. Industrial Pumps, Valves, and Chemical Equipment: Corrosion-resistant chemical pumps and high-speed valve actuation components, tailored to meet non-standard sealing requirements for corrosive media and humid environments.
Characteristic parameter: leakage rate 10 −12 Pa ⋅ m 3 ⋅ S −1
The table lists standard dimensions; specific external dimensions and connection methods can be customized to meet customer requirements.
This product can be used for both vacuum sealing and positive-pressure sealing. The achievable vacuum level is as low as 10⁻⁹ Pa, and the pressure resistance can reach several tens of megapascals (MPa).
| Specifications | D1 (Tolerance) | D2 | D3 | D4 | n-Φd | L1 | L2 | L3 | L4 | Bearing model |
| SR10 | 10h7(₀₋₀.₀₁₅) | 50 | 68 | 85 | 4-Φ7 | 135 | 85 | 25 | 8 | 6201 |
| SR12 | 12h7(₀₋₀.₀₁₅) | 53 | 73 | 90 | 4-Φ9 | 135 | 85 | 25 | 10 | 6202 |
| SR16 | 16h7(₀₋₀.₀₁₈) | 65 | 85 | 105 | 4-Φ9 | 155 | 105 | 25 | 10 | 6204 |
| SR20 | 20h7(₀₋₀.₀₂₁) | 70 | 90 | 110 | 6-Φ9 | 170 | 110 | 30 | 12 | 6205 |
| SR25 | 25h7(₀₋₀.₀₂₁) | 80 | 100 | 120 | 6-Φ9 | 175 | 115 | 30 | 12 | 6206 |
| SR30 | 30h7(₀₋₀.₀₂₁) | 92 | 110 | 130 | 6-Φ9 | 188 | 118 | 35 | 12 | 6207 |
| SR35 | 35h7(₀₋₀.₀₂₅) | 100 | 125 | 145 | 6-Φ11 | 192 | 122 | 35 | 15 | 6208 |
| SR40 | 40h7(₀₋₀.₀₂₅) | 105 | 130 | 150 | 6-Φ11 | 208 | 128 | 40 | 15 | 6209 |
| SR45 | 45h7(₀₋₀.₀₂₅) | 110 | 135 | 155 | 8-Φ11 | 220 | 130 | 45 | 15 | 6210 |
| SR50 | 50h7(₀₋₀.₀₂₅) | 120 | 145 | 165 | 8-Φ11 | 240 | 140 | 50 | 15 | 6211 |
| SR55 | 55h7(₀₋₀.₀₃) | 130 | 160 | 185 | 8-Φ13 | 255 | 145 | 55 | 18 | 6212 |
| SR60 | 60h7(₀₋₀.₀₃) | 140 | 170 | 195 | 8-Φ13 | 270 | 150 | 60 | 18 | 6213 |
| SR65 | 65h7(₀₋₀.₀₃) | 145 | 175 | 200 | 8-Φ13 | 285 | 155 | 65 | 18 | 6214 |
| SR70 | 70h7(₀₋₀.₀₃) | 150 | 180 | 205 | 8-Φ13 | 300 | 160 | 70 | 18 | 6215 |
| SR75 | 75h7(₀₋₀.₀₃) | 165 | 200 | 235 | 8-Φ17 | 310 | 170 | 70 | 20 | 6216 |
| SR80 | 80h7(₀₋₀.₀₃) | 180 | 215 | 250 | 8-Φ17 | 320 | 180 | 70 | 20 | 6217 |
| SR85 | 85h7(₀₋₀.₀₃₅) | 190 | 225 | 260 | 8-Φ17 | 350 | 190 | 80 | 20 | 6218 |
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