// Dynamic Suspensions by Multimatic

The following specifications are generalized for each Dynamometer. Specifications are subject to change. If any parameter described below is critical to your application, please discuss it with your local support centre.

Standard 3-Phase Portable Hydraulic
Speed Control Variable Frequency Drive Variable Frequency Drive Variable Frequency Drive Closed-Loop Digital Servo-Hydraulic
Actuation Mechanism Scotch Yoke Scotch Yoke Scotch Yoke Linear Hydraulic Actuator
Power Supply Requirement/Voltage1 2.2 kW/240 V 5 kW/415 V 3-phase 2.2 kW/240 V 2.2 kW/240 V
Instantaneous Peak Power Output (Approximate) 4 kW 9 kW 4 kW 20 kW
Main Dimensions (w/d/h) 430 mm, 640 mm, 860 mm 430 mm, 640 mm, 860 mm 280 mm, 405 mm, 585 mm 430 mm, 640 mm, 860 mm
Total Height Assembled 2100 mm 2100 mm 1280 mm 2100 mm
Weight 150 kg 160 kg 55 kg 200 kg
Weight in Flight Case (complete with computer)2 75 kg
Max Stroke3 75 mm 75 mm 75 mm 100 mm or 170 mm
Max Damper Diameter4 240 mm 240 mm 240 mm 130 mm
Max Damper Length5 675 mm 675 mm 700 mm 710 mm
Strokes Available (mm) 10, 20, 30, 40, 50, 60 and 75 10, 20, 30, 40, 50, 60 and 75 10, 20, 30, 40, 50, 60 and 75 1-100 or 1-170 ‘infinitely’ variable
Peak Rated Load 1000 kg 1000 kg 1000 kg 1000 kg
Peak Load at 20 mm stroke6 750 kg 1000 kg 700 kg 1000 kg
Peak Load at 75 mm stroke6 250 kg 700 kg 230 kg 1000 kg
Frequency Range7 0.3 – 6 Hz 0.3 – 6 Hz 0.3 – 6 Hz 0.1 – 30 Hz
Peak Velocity (No Load)6 1500mm/s 1500mm/s 1500mm/s 1500mm/s
Peak Velocity (Typical Damper Fitted)6 700mm/s 1500mm/s 700mm/s 1000mm/s
Speed/Frequency Control from Computer Yes Yes Yes Yes
Automatic Series Run Execution Yes Yes Yes Yes
Sine Wave Testing Yes Yes Yes Yes
Square/Triangle Wave Testing No No No Yes
Complex Waveform Testing No No No Yes
Track Data Replay No No No Yes
Spring Testing Limited Limited Limited Yes
Bump Rubber Testing Limited Limited Limited Yes
Spring Rate/Bump Rubber Rate Graph Yes Yes Yes Yes
Typical Computer8 Pentium Desktop Pentium Desktop Pentium Laptop Pentium Desktop
Colour Printer Supplied8 Yes Yes Yes (Portable) Yes

 

Notes
(1) Alternative voltages available
(2) A flight case is available as an option for the portable unit
(3) Total stroke (i.e. 75 mm is + – 37.5 mm about the centre position). Extended stroke models available
(4) Assumes damper mounted centrally
(5) This dimension is for dampers with spherical bearing mounts at each end. For other mounting styles, the length of the mounting adapter must be allowed for. Increased length models/extensions are available upon request
(6) Peak load and velocity values are nominal and dependent on the response of the test damper
(7) Frequency range can be extended upon request but other performance parameters will be adversely affected
(8) Computer and printer specifications are constantly being upgraded