Laser shaft alignment uses laser measurement tools to position a motor and its driven equipment so both shafts share a common centerline during operation. Done correctly, it reduces vibration, heat, and wasted energy, and it’s one of the simplest ways to keep bearings, seals, and couplings from failing early. Rocky Mount Electric Motor performs laser alignment on-site for industrial facilities across Eastern North Carolina and Southeast Virginia.
What Is Shaft Misalignment?
Misalignment happens when the centerlines of two coupled shafts don’t line up. It comes in two basic forms. Offset (or parallel) misalignment is when the shafts run parallel but not on the same line. Angular misalignment is when the shafts meet at an angle. Most real-world installations have some of both, in both the vertical and horizontal planes.
Small errors still matter. A flexible coupling can hide misalignment from the eye, but it can’t hide it from your bearings. The coupling absorbs the error by pushing extra force into the shafts, seals, and bearings on every rotation.
What Are the Signs of a Misaligned Motor?
Misalignment rarely causes one dramatic failure. It shows up as a pattern of wear. Watch for:
- High vibration, especially near the coupling or in the axial direction
- Bearings or couplings running hotter than normal
- Repeated bearing, seal, or coupling failures on the same machine
- Excessive coupling wear, loosening foundation bolts, or cracked shafts
- Rising energy use with no change in load
If a machine keeps eating bearings, alignment is one of the first things to check.
Why Choose Laser Alignment Over Straightedges or Dial Indicators?
Straightedges and feeler gauges are fast but rough, and they depend heavily on the technician’s eye. Dial indicators are accurate in skilled hands, but setup takes time and readings can be thrown off by bracket sag. Laser alignment systems measure shaft position electronically, calculate the exact shim and horizontal moves needed, and let the technician watch corrections live as they’re made.
The result is faster work, repeatable accuracy, and a documented before-and-after record you can keep with your maintenance history.
How Does the Laser Alignment Process Work?
A typical job starts by checking for soft foot, a condition where one of the motor’s feet doesn’t sit flat on its base. Soft foot comes first because tightening bolts over it can distort the motor frame and undo the alignment. Next, laser heads are mounted on each shaft and the shafts are rotated to take readings. The system calculates the corrections, and the technician shims and moves the motor into tolerance. A final measurement confirms the result.
Experienced technicians also account for thermal growth, the way equipment expands as it reaches operating temperature, so the machine is aligned where it counts: while it’s running.
When Should You Schedule Laser Alignment?
Check alignment whenever a motor is installed, replaced, or returned from repair, and after any work that disturbs the base, piping, or coupling. Periodic checks are smart too, since foundations settle and pipe strain can shift equipment over time. Pairing alignment with vibration analysis as part of a Predictive Maintenance Program helps you catch problems before they turn into downtime.
Keep Your Equipment Running with Rocky Mount Electric Motor
Since 1972, Rocky Mount Electric Motor has helped facilities across Eastern North Carolina and Southeast Virginia keep critical equipment in production. Our technicians bring laser alignment, vibration analysis, motion amplification, and onsite balancing directly to your plant. We’re available 24/7/365, and when you call, you’ll always reach a real person, never an answering service.
Is a motor running hot, loud, or chewing through bearings? Contact Rocky Mount Electric Motor or call 252-446-1510 to schedule laser alignment and get your equipment running smoothly again.