Special heavy duty passenger car and van EUSAMA principle suspension tester (other evaluation methods – Minimum Phase Shift, Damping Ratio) for test lanes with combined passenger car/truck testing with PC based control unit (Windows OS, widescreen monitor), up to 4 ton/15 ton drive-over weigh (opened/closed covers) and up to 2.5 ton maximum testing axle weight. 8 point weighing system, allowing also to show wheel position anywhere on the measuring plate ( 600 x 360 mm, rubber sealed). Two part hot-dip galvanized frame inside hot-dip galvanized installation frame, two pneumatically controlled covers of tester measuring plates, power supply 3/N/PE 400V AC/50Hz.


  • Based on more than 20 years experience from Belgian PTI stations, heavy duty versions of suspension testers are capable to perform 100 - 300 car tests/day over period of 10-20 years.
  • Suspension test result evaluation according to any of the three implemented test methods (EUSAMA, Minimum phase shift and Damping ratio). None of these three test methods requires comparing to the database of the vehicle/damper specific reference values.
  • EUSAMA value for each wheel in %. EUSAMA evaluates minimum adhesion value between the wheel and the road.
  • Minimum phase shift for each wheel in degrees. Minimum phase shift is the extension / alternative method to the EUSAMA test method, suitable also for a very light car testing. In engineering similarly as the Damping ratio, Phase shift is also used as a measure of damping properties of oscillating systems.
  • Damping ratio for each wheel (dimensionless quantity). This is an alternative method to the EUSAMA, where 'efficiency' of dampers is evaluated directly. In engineering the Damping ratio is a generally used dimensionless measure describing how oscillations in a system (wheel on the car body) decay after disturbance.
  • Tire stiffness for each wheel in N/mm, indicating the tire pressure.

  • Widescreen LCD monitor 22” – 32”, supported native screen resolutions from 640x480 to 2560x1600 pixels
  • Highly customizable error and warning setting according to specific country limit values
  • Automated guided test with possibility of automatic results printout and/or save results (graphs and values) in Adobe Acrobat format (pdf), correct results in green color/wrong results in red color optionally - unsafe results in yellow color

  • Total-, axle-, and wheel-weights in kg or daN
  • Safety functions during system and motors start up, providing protection for either people working around tester or protecting tester itself from damage
  • Motors protection IP55 (=splash proof), strain gage transducers with even higher protection level IP65
  • Automatic zero adjustment before test
  • Tester error check procedure
  • Possibility to start (from the tester control software) relation of remote support (through TeamViewer). It is possible to start this remote support relation only if the computer is connected to the internet.
More characteristics


  • Infrared remote controller
  • Color printer
  • Membrane keyboard
  • 3 x 240 V or 60 Hz net frequency
  • Installation frame
  • Other evaluation methods - Minimum phase shift and Damping ratio
  • Vehicle noise testing


  • Control unit
  • Pc with os., monitor, keyboard, mouse
  • PC software
  • Ground unit with 12 m cable


622B 630B
Technical data
Basic test method EUSAMA (0-100%)
Other evaluation methods Minimum phase shift (0-180⁰), Damping ratio (0-0.3)
Tire stiffness 50-500 N/mm
Motor power (2 motors) 2.2 kW 3 kW
Motors driven by freq. inverter Optionally (for Damping ratio or Minimum phase shift)
Maximum testing axle weight 1700 kg 2500 kg
Axle weight measuring range 2500 kg
Maximum overdrive axle weight (cover opened) 4000 kg
Maximum overdrive axle weight (cover opened) 15000 kg
Measuring plate dimension 600 x 360 mm
Min/max test width 850/2150 mm
Measuring frequency 25-5 Hz
Peak to peak amplitude 6 mm
Installation frame 84 kg
Ground unit 346 kg
Control unit 66 kg
Basic dimensions
Installation frame 440 x 2200 x 210 mm
Ground unit 400 x 2132 x 200 mm
Control unit 530 x 572 x 1290 mm w/o monitor
Electric supply
Total load 3.0 kVA 4.0 kVA
Connection 3NPE-50 Hz 400 V / TN-S