All About SGO Bearings🔍
- What is an Oil Seal? -
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In this edition, we’re excited to introduce an Oil seal, our latest product for October. |
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Oil seal is a component that prevents oil or lubricants from leaking out of the rotating parts of machinery and blocks external dust or contaminants from entering the machinery. |
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It is primarily used between rotating shafts and stationary parts, and is utilized in various fields such as automobiles, industrial machinery, and home appliances. |
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Oil seal helps ensure smooth operation of machinery by preventing oil or grease from leaking out of the lubrication system. It also blocks dust, water, and other contaminants from entering the machinery, protecting its performance and extending the lifespan of the equipment. oil seal is made from various materials, so it is important to select the appropriate material depending on the usage environment. |
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NBR (Nitrile Rubber) is widely used as a general-purpose material due to its excellent oil resistance and low cost. It is particularly effective in environments with fluids such as petroleum, fuel, and lubricants, and it performs reliably within a temperature range of -40℃ to 120℃. Additionally, it is highly resistant to wear. However, its performance can diminish in high-temperature environments, and it has weaker resistance to certain chemicals such as acids and strong alkalis. |
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Silicone has excellent heat resistance, maintaining flexibility even in extreme temperatures ranging from -50℃ to over +200℃. For this reason, it is widely used in various fields such as automotive, aerospace, and high-temperature machinery. However, its oil resistance is lower than that of NBR, so its performance may decline in environments where it comes into contact with fuel. |
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Viton can be used in high-temperature (up to 250℃) and high-pressure environments, offering excellent chemical resistance. It has strong resistance to fluids such as fuel, chemicals, and oil, making it commonly used in the automotive, petroleum, and chemical industries. However, it is expensive, and its flexibility in low-temperature environments is lower compared to silicone. |
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If grease is not applied before installing oil seal, friction may increase, shortening the seal's lifespan. It is important to apply proper lubrication early on to reduce wear and maintain the seal's performance. Applying grease to the inner diameter of the seal before installation can help prevent initial wear. |
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2) Material Selection Based on Operating Environment |
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The commonly supplied Oil seal is general-purpose, but in high-pressure, high-speed, high-temperature, or chemical environments, sealing functions may be compromised. It is essential to check whether the material is suitable for the operating temperature and chemicals of the specific environment. For example, in cases involving high temperatures or chemical exposure, oil seal made with Viton, which offers excellent heat and chemical resistance, is appropriate, while oil seal made with NBR, known for superior oil resistance and cost-effectiveness, is suitable for typical petroleum environments. |
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3) Selecting the Correct Size |
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The inner diameter of Oil seal should ideally be slightly smaller than the shaft dimensions. This ensures a tight fit on the shaft, preventing oil leakage and blocking external contaminants. When Oil seal is installed, compression occurs; if the inner diameter is too large, the seal will not fit tightly, leading to leakage. Conversely, if the inner diameter is too small, installation may become difficult, or the seal could be damaged. Therefore, it is crucial to measure the shaft's exact dimensions and choose a properly sized seal for the rotating shaft. |
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To maintain the machine’s performance, regularly check the condition of Oil seal and replace it immediately if any wear or damage is detected. |
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The Oil seal introduced today delivers outstanding performance in various machinery and automotive applications, and it comes in different materials and types to suit your specific usage environment. |
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SGO online store offers Oil seals in NBR, Viton, and Silicone, with a wide range of sizes available.
Click the button below to check out the new Oil seals at the SGO online store. 😉 |
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SGO will participate in the JIMTOF 2024.
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SGO's will be participating in the 32nd Japan International Machine Tool Fair, JIMTOF 2024. |
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JIMTOF is one of the world’s largest international technology fairs, showcasing the latest technologies and products across the entire manufacturing industry, from machine tools to all types of peripheral equipment.
The 32nd JIMTOF 2024 will be held over six days, from Tuesday, November 5 to Sunday, November 10, at Tokyo Big Sight, with more than 1,000 companies expected to participate from both Japan and abroad. |
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In particular, JIMTOF is renowned for being a platform where a wide range of the latest products and technologies are unveiled for the first time. This year, more than half of the exhibitors plan to showcase new products. Additionally, various lectures, seminars, and special exhibitions for students and visitors will be held, providing an opportunity to experience the latest technological trends firsthand. |
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You can pre-register for exhibition attendance through the button below. Visit SGO’s booth at JIMTOF 2024 to explore our products and experience a global platform for technological collaboration! |
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SGO CO.,LTD. ㅣ info@sgoilless.co.kr
28-10, Namdongseo-ro 113beon-gil, Namdong-gu, Incheon, Korea
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