420 RBLR

The automatic wheel unbalance measuring station type 420RBLR is used for the automatic measurement of dynamic unbalance on complete car wheels in both steel and light metal versions. The machine determines the unbalance of wheels in single-batches under production conditions in chained mode.
Therefore the wheels are horizontally transported by the interlinking conveyor system into the machine and placed on the measuring spindle by means of a lifting table. A high-precision clamping device fixes and centers the wheel for the subsequent measuring run.

Design

• Machine bed designed for subcritical operation, for unbalance measurement in two planes
• Balancing unit: Patented leaf spring dynamometer for highest sensitivity and frequency selectivity through extremely subcritical tuning and constructively separate degrees of freedom for the determination of the unbalance torque and the static component. Especially suitable for the geometric pre-setting.
• Two SV16 electrodynamic vibration sensors, designed as robust moving coil system
• Electromechanically driven lifting unit
• Measuring and control cabinet
• Pneumatic control system
• Safety-housing

• No foundation required! The SCHENCK measuring system allows the installation on a standard industrial floor of 250 mm thickness without special foundation.
• Single Master Calibration: The SCHENCK Single Master Calibration allows to recover all wheel calibrations with just one master wheel calibration. The specific wheel calibrations are attributed to the geometry data of the master wheel therefore the individual wheel types do not need to be recalibrated.
• Automatic index error checking and calibration during production
• Clamping technology: Low-maintenance slide bush tooling for individual clamping diameters or optional universal, high-precision, backlash-free 10-jaw chuck for clamping range 54-84mm with flat pull function for realistic clamping like on the vehicle