HGL Dynamics Spin Rig

Access to operational rotating machinery for training and/or demonstration is often limited for both practical and health & safety reasons. For this reason HGL Dynamics has developed a small scale spin rig that provides a useful tool for demonstrating vibration phenomena and training staff in vibration monitoring and analysis.

Manual or Automated Motor Control Multiple Bearing / Fixture Positions Once Per Revolution Tacho Support 90° mounted Proximity Probe Support Accelerometer Support Integrated Control Electronics

HGL developed the unit to simulate the vibrations seen from rotating machinery such as Gas Turbines. The Spin Rig can be configured with either plain or rolling element bearings allowing the simulation of machines featuring either of these, or a mixture of bearing types.

The instrumentation supplied with the spin rig can be tailored to match your application. Standard provision is for a once per revolution tachometer probe plus a pair of proximity probes mounted at 90° to each other. Provision is also made to allow the mounting of accelerometers via an industry standard 10-32 UNC stud (for use with rolling element bearings). A number of motor speed control options are available, ranging from  a simple manual control to fully automated control from your HGL Dynamics acquisition system.

Vibration conditions that can simulated include:

• Out of balance conditions
• Shaft misalignments
• Bearing pre-loads
• Structural resonances
• Rolling element bearing characteristics
• Squeeze Film bearing characteristics

The Spin Rig, as shown, has been used extensively within HGL as an aid during development of our Rotating Machinery monitoring package allowing us to test our software when access to full size machines has been limited. The rig has been extensively used to develop our Trim Balancing package and to train customers in its use.