- Components to be tested: Parallel displaced resilient elements of all types 
- Maximum load allowed for each of the two testingt positions : F_max = 200 kN 
- Number of springs which can be tested simultaneously : limited by F_max 
- Maximum displacement (displacement controlled) : H = 10 to 400 mm 
- Maximum length of springs : Lo = 900 mm 
- Testing frequency (= resonance frequency): 
    fo = 0.33 x Root(nxR) [Hz] 
    n = number of springs 
    R = spring rate [N/mm] 
    fo = 2 to 25 Hz 
- Mesurement of load and displacement (recording of spring rate; relaxation monitoring) 
- Low noise level, low vibration (no foundation work necessary) 
- Driven by servohydraulic torsional activator (M =< 2,300 Nm) 
- Hydraulic power station 
- Weight about 8.5 to 
- Dimensions of the machine : app. L=2,200mm, W=2,200mm, H=3,500mm 
 
Advantages Compared to Existing Facilities:  

- High testing frequency 
- Low energy consumption (app. 2 to 5 kW) 
- Easy to handle 
- Long life 
- Low maintenance costs 
- Broad use 

Purpose of Testing:  
 
- Time and cost saving determination of fatigue life of resilient components 
- Simultaneous testing of a large numbers of springs, e.g. 
    100 valve springs of passenger cars 
     50 clutch springs of passenger cars 
     30 valve springs of big Diesel engines 
     20 suspension springs of passenger cars 
      2 suspension springs of railway trucks 
 
Typical Customers: 
 
- Manufacturers of springs of all types (research, development and quality assurance) 
- Manufacturers of railway trucks and locomotives, road trucks, passenger cars, combustion engines, injection pumps, clutches, torsional dampers, two mass absorbers, cable cars etc.