Model 3640 High Speed Rail Brake Dynamometer


Brakes, Wheel


Test Equipment, Laboratory Testing

Test Type

Performance, Durability, Noise, Vibration, & Harshness

Model 3640 High Speed Rail Brake Dynamometer


The Model 3640 High Speed Rail Brake Dynamometer is an efficient and accurate tool for train brake performance and noise testing. It performs controlled input or output tests on pneumatically actuated brake assemblies. It precisely measures performance, effectiveness, thermal capacity, noise and vibration, and other attributes related to in- service braking. Employing four clutched mechanical discs, and electrically simulated inertia, this dynamometer is able to reproduce a wide range of inertia values. Hydraulic bearing lubrication dissipates heat from the high speed inertia discs. The tailstock accommodates many different brake assembly fixtures. A Walk-in Test Chamber, Environmental Control, Automated Inertia Disc Clutches, a Thermal Camera, NVH Measurement and a Static Torque subsystem are also available.


Control System ProLINK
Drive System  600 kw AC Motor
Max Rotational Speed    3100 rpm
Static Torque  40 kw AC motor continuous rotation
Inertia   up to 2,400 kgm2 <
Brake Apply System Servo-pneumatic
Torque 35 kNm Maximum
Wheel Diameter  1250 mm Maximum


Key Benefits

  • Accommodates a wide range of brake assembly fixtures
  • Capable of large inertia rotating at high speeds
  • Simulated inertia offers a wide range of inertia values

Test Procedures

  • AAR 927
  • VIC 541

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