HJ-4800A/AX/B is a high-speed horizontal soft support balancing machine designed and manufactured for the small high-speed air-bearing and ball-bearing spindles of PCB drilling machines and circuit board edge-seeking machines. Other small high-speed spindles and milling spindles are also available.

ST-4800A is suitable for the dynamic balance calibration of the air-bearing spindles (sleeve diameter: 61.92 mm) of PCB drilling machines. ST-4800AX is suitable for the dynamic balance calibration of small high-speed ball bearing spindle assembly (sleeve diameter: 50 mm-100 mm). Lastly, ST-4800B is suitable for the dynamic balance calibration of small rotors or motor spindles.

This balancing machine uses a high-sensitivity vibration sensor to measure rotor unbalance vibration, and a high-speed, high-resolution and noise-resistant signal acquisition unit to perform unbalance measurement, with a convenient and easy-to-understand operation interface, which makes the calibration of dynamic balance more efficient.

In addition, it is equipped with spectrum analysis functions to analyze the rotational characteristics of the spindle or motor rotor to determine the cause of vibration, such as dynamic balance, magnetic vibration, misalignment of bearing assembly verticality, and so on.

• It has a high-bandwidth and high-sensitivity vibration sensor to measure rotor unbalance centrif-ugal force.
• The balancing machine is a tabletop soft support design with an integrated control box containing computer, monitor, inverter and other control switches.
• The optional motor angle sensor (encoder) provides the unbalance position angle identification indication function.
• The track surface of the base undergoes high-frequency heat treatment to resist wear and main-tain accuracy, and the bearing support frame is a flexible mechanism to amplify the unbalance force signal.
• For PCB air float and ball bearing spindle dynamic balancing calibration, you can choose one control unit with two dynamic balancing machines, such as control unit with ST-4800A and ST-4800B.
• Balancing software provides one-side, two-side and three-side balancing calibration modes.
• Provides two calibration modes of hard support low speed and high-speed influence coefficient method.
• Includes real-time spectrum analysis function to determine the spindle's operating characteristics and assembly characteristics.
• Dynamic balancing calibration can be weighted or de-weighted, with function that allows calcu-lation of the drilling depth of different materials.
• Dynamic balancing calibration is equipped with component calculation function, as well as auto-matic or manual selection of the weighted hole position and weight distribution.
• Balancing software can automatically calculate ISO1940 balance level, judge the calibration re-sults and display GO or NG.
• The report can be printed with company letterhead and LOGO, users can choose between either Chinese or English version reports, and more than 100000 units balancing data can be stored.