Coupling failure issues can be traced down to multiple types of failure modes. However, I have found that a few are the primary culprits for all types of couplings.
The #1 failure mode that causes the majority of the premature
failures we see can be attributed to one aspect:
IMPROPER ALIGNMENT (angular, parallel or axial)
Some of the remaining common failure modes are (in no particular
order):
- Lack of lubrication (Gear and Grid couplings)
- Improper torquing of fasteners
- Excessive torque
- Environmental
- Excessive vibration induced by mating machinery
While multiple issues can occur that will lead to a premature coupling failure, it is a good idea to start with the alignment of the machinery when determining a root cause.
Used properly, dial indicators (lower cost & pictured above) and laser alignment tools (premium/higher cost) are both effective tools to consider when aligning a coupling.
Recommended Follow On Reading: For a deep dive into specific failure modes, inclusive of photographs, check out the following four articles below.
Used properly, dial indicators (lower cost & pictured above) and laser alignment tools (premium/higher cost) are both effective tools to consider when aligning a coupling.
Recommended Follow On Reading: For a deep dive into specific failure modes, inclusive of photographs, check out the following four articles below.
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