Wheel Balancing machine

A wheel balancing machine is a measuring tool used for balancing rotating machine parts such as rotors for electric motors, fans, turbines, disc drives, propellers and pumps. The machine usually consists of rigid pedestals, with suspension and bearings on top. The unit under check is placed on the bearings and is rotated either with a belt, air, or end-drive. As the part is rotated, the vibration in the suspension is detected with sensors and that information is used to choose the amount of unbalance in the part. Along with phase information, the machine can choose how much and where to add weights to balance the part.

There are main types of balancing machines, hard bearing and soft bearing. The difference between them, however, is in the suspension and not the bearings. In a hard bearing machine, balancing is done at a frequency lower than the resonance frequency of the suspension. In a soft bearing machine, balancing is done at a frequency higher than the resonance frequency of the suspension. Both types of machines have various advantages and disadvantages. A hard bearing machine is usually more flexible and can handle pieces with greatly varying weights, because hard bearing machines are measuring centrifugal forces and need only a one-time calibration. Only five geometric dimensions must be fed in to the measuring unit and the machine is prepared for use. Therefore it works well for low and middle size volume production and in repair workshops. A soft bearing machine is not so flexible in respect of amount of rotor weight to be balanced. The preparation of a soft bearing machine for individual rotor types is more time consuming, because it’s to be calibrated for every individual part. It is suitable for high production volume and high precision balancing tasks. Hard- and soft bearing machines can be automated to remove weight automatically e.g. by drilling or milling, but hard bearing machines are more robust. Both machine principles can be integrated in a production line and loaded by a robot arm or gantry, requiring small human control. Soft bearing machines are also usually more expensive because of the higher complexity in the design and manufacturing.

Auto wheel balancer is one type of the balancing machine. If you are looking for cheap but high quality wheel balancer, please click here. http://www.chinapuli.com/Products.asp?BigClassID=7&SmallClassID=2&Language=en
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