Spin Test Tooling & Arbors

The Issue

The spin test tooling used in spin testing a rotating device is subject to the same speed-induced stresses as the device under test (DUT) itself. Therefore, the tooling must meet at least the same performance specification as the customer’s part being tested. Perhaps the worst possible outcome of a spin test is failure of the spin tooling which results in damage to the component under test. For instance, if tooling fails during a long duration low cycle fatigue test, the test component lost could be worth several hundred thousand dollars. Additionally, the component life is not established.

Why It Matters

The act of holding a DUT affects the internal stresses of the part. As a result, a key challenge in designing spin test tooling is to safely control the DUT while not significantly entering into and affecting the test results. While the design requirements of tooling do not vary substantially from industry to industry, their safe and effective application entails advanced knowledge and unique approaches for specific DUT’s and kinds of tests.

What You Can Do

Test Devices creates tooling for spin testing that mimics, as closely as possible, the manner in which the part is held and the stresses it is subjected to in actual operating conditions. This ensures that the test results are in line with real world conditions. Test Devices engineers use Solid Works three dimensional modeling software to design tooling, and analyze the fits and stresses of the design with Cosmos analysis software. Additionally, the rotordynamics of the complete test assembly (component, tooling and spindle) are reviewed with XLRotor software.

Our arbor designs range from routine to extremely complex and are available to our customers regardless of test location or equipment type. Customers can use the tooling at our facility or at their facility on their own equipment.