Series WM Moment Weighing Scales for Jet-Engine Blades • Precision measurement of jet-engine blade moments • Simple balancing of bladed rotors • Single-axis type for narrow blades and bi-axial type for wide chord fan blades • Optional software for optimized blade distribution Range of application Determining the radial, axial and tangential moments of jetengine blades for evaluation of mass and position of center of gravity. Application of the scale in testing, inspection and quality control. With the use of the optional BLADIS Net blade-distribution system, the exact position of the blade in the assembly can be determined. Design Electronic scale on a base plate with built-in levelling device. Weigh-beam mounted on knifeedges for friction-free operation, including oil damping, measuring system with load-cell and microprocessor-controlled measuring unit (digital display), thus, ensuring high weighing accuracy and repeatability. An adapter flange is provided for mounting the blade adapter. Single-axis or dual-axis types according to the application and blade form. Schenck RoTec GmbH Landwehrstrasse 55 D-64293 Darmstadt Telefon (0 61 51) 32 23 11 Telefax (0 61 51) 32 23 15 http://www.schenck-rotec.de E-Mail [email protected]

Series WM Moment Weighing Scales for Jet-Engine Blades With multi-axis equipment, the axial and tangential moments can also be measured. This is especially necessary for wide chord, heavy blades. With the single-axis scale only the radial moment is determined. If the mass distribution of the blades is known, the blades can be installed on the turbine disc in a sequence that will result in the lowest possible residual unbalance. This may become a difficult task, even in standard applications, and in particular when the unbalance of the disc is to be compensated for by the blade positions.Complex...

Technical data at a glance Measuring unit Digital Digital Digital Digital Digital Digital Digital Digital Digital Single-axis measurement Triple-axis measurement Jet-engine blade Radial moment Tangential moment Axial moment Flange radius Power requirement Revolving flange Calibration Master 2) Blade distribution system (software and hardware] 3) Data non-binding, dependent on the respective equipment