Model 3394 NVH Master Cylinder Test Stand




Test Equipment, Laboratory Testing

Test Type

Performance, Durability, Noise, Vibration, & Harshness, Structural Fatigue

Model 3394 NVH Master Cylinder Test Stand


The Model 3394 NVH Master Cylinder Test Stand evaluates performance and Noise, Vibration and Harshness (NVH), of brake vacuum boosters and master cylinder systems. These tests are performed by applying servo-controlled stroke or force control, via a linear actuator, to the brake booster, simulating service conditions. Pumps simulate engine vacuum and perform automatic evacuation and fill of brake fluid. Disc springs simulate the brake caliper reaction force. Transducers measure displacement, stroke, pressure and load of the brake system. A semi-anechoic chamber, microphones and Link custom software facilitate noise analysis.


Control System

Fluid Displacement  Flow Meter 0.2 to 160 cc / sec
Pressure 200 Bar Max
Stroke 500 mm Maximum
Force 10,000 N Maximum


Key Benefits

  • Linear actuation for force or stroke applications
  • Testing available without physical brake caliper
  • Complies with standard OEM test specifications

Test Procedures

  • JASO C452 vacuum servo units
  • SAE J1908 brake vacuum assist booster

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