14 | Plant & Works Engineering www.pwemag.co.uk October/November 2025 Advertorial which makes the motor shaft wobble, or a shaft that has become misaligned with the load. It could also mean the mounting bolts are loose. Allowing a motor to run while vibrating will only accelerate the damage. The constant shaking can harm the bearings, damage the windings and loosen electrical connections — leading to much bigger problems. 4. The Motor Is Losing Its Accuracy You use servo motors for one primary reason — precision. A motor positioned incorrectly compromises your entire process. This accuracy concern often appears as drifting, where the motor stops just short of or just past its target position. You might also see jerking or lagging movements where it struggles to follow commands. This is a sign that its feedback device, the encoder, may be failing. A study on servo diagnostics highlights that erratic movement and positioning errors are frequently traced back to encoder or feedback problems. Addressing this proactively prevents the motor from losing control entirely, which could damage the machine or your product. 5. The Drive Trips or Shows Random Alarms Occasional glitches are almost never just glitches. If a servo repeatedly trips its breaker or shows intermittent fault codes, there’s an underlying issue. These alarms might be related to over-current, over-voltage or encoder faults. It can be tempting to simply reset the alarm and restart the machine, especially during a busy production run. However, these errors are your system’s built-in diagnostic. They could be warning you of failing cables, power supply instability or an electrical short in the motor windings. Investigating the root cause of these alarms is what proactive maintenance is all about. Where to Find the Best Value Repair Services for Servo Motors When one of these signs appears, the next step is finding a repair partner with a positive track record. U.S.-based Global Electronic Services is one such servo repair specialist that caters to international clients, including those in the U.K. It offers a two-year service warranty and a free 24- to 48-hour rush service — critical for minimising downtime. The high cost of failure underscores the need for a reliable partner. The world’s largest companies can lose a significant percentage of their annual revenue to unplanned downtime, with faulty equipment being a primary culprit. This reinforces the value of using an expert that can provide a fast, reliable refurbishment. Keep Your Operations in Motion A servo motor failure is always disruptive, but you change the dynamic by training your team to spot the signs proactively. Listening for noise, feeling for heat and watching for inaccuracy are simple checks that protect your most critical asset Global Electronic Services sales@gesrepair.com https://gesrepair.com/ 5 Telltale Signs Your Servo Motor Needs Proactive Attention You can count on servo motors to be precise and powerful on your production lines. However, when one of them breaks down, it can bring operations to a halt and cost you time and money. The key is to catch problems before they lead to a full breakdown. Looking for the best servo motor repair services is smart, but it’s much better to prevent failure in the first place. Analysing your equipment for five early warnings is the most effective way to manage maintenance proactively. 1. You Hear Squealing, Grinding or Whining Your facility is likely noisy, but your maintenance teams should be familiar with the normal machine sounds. When a servo motor begins to produce new, unusual noises, it’s a clear mechanical warning. High-pitched squealing or whining often points to failing bearings or a brake issue. A rough grinding sound can indicate worn-out bearings, an internal misalignment or contamination within the motor housing. These sounds are the direct result of friction and components struggling. Investigating the source of the noise lets you schedule a repair before the component seizes completely. 2. The Motor Housing Is Too Hot Heat is the primary energy source of any mechanical or electronic component. Servo motors do heat up during regular operations, but a unit that’s too hot to the touch is a red flag. There are a number of reasons why this can happen. The motor might be overloaded and drawing too much current. It could also be a sign of poor ventilation, with debris and dust blocking airflow. A spike in temperature can also be caused by pieces that are broken or worn out and produce more friction. This thermal stress can degrade insulation and lead to catastrophic failure. A thermal camera can assist you in finding a motor that’s running hotter than its counterparts during regular checks. 3 You Notice Wobbling or Excessive Shaking Too much vibration, like strange noises, is a physical sign of an internal problem. A properly mounted servo motor should operate smoothly. When you notice new or increasing vibration, it is a warning that something is out of place. Common causes include bearing wear,
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