Jacks that rely on hydraulic oil pumps to drive sleeve lifting can all be classified as hydraulic jacks. Among various types of jacks, hydraulic systems are commonly used to lift heavy objects, such as ordinary hydraulic jacks, claw jacks, hollow jacks, split thin jacks, split single acting jacks, and electric hydraulic jacks. So, which of these jacks require regular calibration?

In fact, commonly used equipment such as ordinary hydraulic jacks and claw jacks do not require regular calibration, only daily maintenance and upkeep. Split type jacks, hollow jacks, etc. are mostly used in large-scale lifting operations such as construction bridges and industrial manufacturing, mainly responsible for the application and control of force values in load-bearing pile foundation engineering and prestressed structural engineering. To ensure the construction quality of the project, ensure the accuracy and reliability of the force control system, and effectively protect the personal safety of operators, such jacks must be regularly calibrated according to regulations.

The calibration work of hydraulic jacks covers multiple aspects, including frame calibration, series calibration, calibration point control, abnormal situation calibration, and indication error calibration. All contents must be strictly executed in accordance with relevant standards and specifications to ensure the scientificity and effectiveness of the calibration results.