When it comes to seals for hydraulic jacks, people naturally think of hydraulic jacks. The hydraulic system of hydraulic jacks avoids the overflow of hydraulic oil under the restriction of seals, thus maintaining the normal use of hydraulic jacks. However, seals are not exclusive to hydraulic jacks, and screw jacks also need to use seals.
Many people do not understand that the screw jack does not involve the transmission of hydraulic oil, and there is no reason to restrict it through seals. In fact, the purpose of the seal of the screw jack is not to prevent hydraulic oil from overflowing internally, but to prevent impurities from entering externally. With this statement, everyone should understand.
Although the screw jack does not require the transmission of hydraulic oil, its internal components require the interaction of precision parts such as gears and screws. Once dust and impurities enter these components, it will inevitably seriously affect their normal functioning, leading to increased wear and tear between mechanical components and reducing the service life of the screw jack.
So although the screw jack does not require the transmission of hydraulic oil, it still needs the protection of seals to prevent the invasion of foreign substances, which is the purpose of the seal of the screw jack.
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