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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

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.
Design

Range of application

Determining the radial, axial and tangential moments of jet-engine 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.
Technical data
Technical data at a glance    WM 02  WM 01  WM 00  WM 0  WM 1  WM 2  WM 0 BA  WM 1 BA  WM 2 BA 
Measuring unit    Digital  Digital  Digital  Digital  Digital  Digital  Digital  Digital  Digital 
Single-axis measurement    •  •  •  •  •  •       
Triple-axis measurement              •  •  •   
Jet-engine blade                     
Weight  [kg]  0,1  0,3  1  3  10  30  3  10  20 
Radial moment  [kgm]  0,02  0,1  0,5  2  10  40  2  10  30 
Tangential moment  [kgm]  -  -  -  -  -  -  0,25  1,25  2,5 
Axial moment  [kgm]  -  -  -  -  -  -  0,25  1,25  2,5 
Root radius, min. 1)  [mm]  30  30  80  80  125  275  100  165  200 
Machine                     
Width A 3)  [mm]  1000  1000  1200  1200  1500  2000  800  1500  1500 
Depth B 3)  [mm]  800  800  1000  1000  1200  1500  800  1000  1000 
Height C 3)  [mm]  300  300  500  500  600  800  600  1000  1000 
Flange radius 1)  (mm)  30  30  80  80  125  275  100  165  200 
Sensitivity  (gmm)  0,1  1  10  20  100  1000  20  100  500 
Power requirement  [V]  230  230  230  230  230  230  230  230  230 
                     
Basic machine  Order No.  R0710100.01  R0710200.01  R0710300.01  R0710400.01  R0710500.01  R0710600.01  R0710700.01  R0710800.01  R0710900.01 
Options                     
BLADIS Net 2)  Order No.  R0710101.01  R0710101.01  R0710101.01  R0710101.01  R0710101.01  R0710101.01  -  -  - 
BLADIS 3D 2)  Order No.  -  -  -  -  -  -  R0710201.01  R0710201.01  R0710201.01 
Revolving flange  Order No.  -  -  -  -  -  -  -  R0710802.01  R0710902.01 
Calibration Master  Order No.  R0710103.01  R0710203.01  R0710303.01  R0710403.01  R0710503.01  R0710603.01  R0710703.01  R0710803.01  R0710903.01 
                     
1) Distance from axis of rotation to blade root                     
2) Blade distribution system (software and hardware)                     
3) Data non-binding, dependent on the respective equipment