The single-acting hollow hydraulic jack is an essential tool for various industries such as electric power, building, machine manufacturing, mining, subway, bridge, and shipbuilding, among others. It is commonly used for lifting, installing, and tearing down heavy objects.
One of the key features of the single-acting hollow hydraulic jack is the safe protective pressurizer and built-in pressure relief valve that protects against overloading. This ensures safe operation and can be customized according to the client's specific requirements.
However, for new or unused single-acting hollow hydraulic jacks, there may be air trapped in the cylinder, which can cause sudden jumps when using the piston rod. To avoid this, it is recommended that the jack be moved repeatedly without loading two or three times to remove the air in the cylinder. For jacks left unused for long periods, it is also advised to perform this reciprocating motion without load two or three times per month to maintain optimal performance.
Another variation of the single-acting hydraulic jack is the single-acting center-hole hydraulic cylinder jack. This type of jack has a hollow plunger design that allows for both pull and push forces. It is commonly used for testing, maintenance, and tensioning applications.
When selecting a hydraulic jack, factors such as available space, number of jacks used at the same time, and frequency of use should be considered. For example, thin hydraulic jacks are suitable for use in low spaces, while synchronous hydraulic jacks are ideal when using several jacks simultaneously. Self-locking hydraulic jacks are recommended for long-term use, while hollow hydraulic jacks are suitable for tension and tension. For lifting weights of up to 500t, the large-tonnage jack can be used. Additionally, a synchronous jacking system is optional for high-progress synchronous jacking. All of these factors should be taken into account when selecting the appropriate hydraulic jack for your specific needs.

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