When buying an electric motor, the third heading as important as price and delivery time is the warranty; however, in most purchasing discussions the warranty is brushed over with the sentence "two-year warranty." When the motor fails in the field, the real questions only begin to be asked at that moment: Is winding burnout covered? Who will remove and send the motor? Will it be repaired or will a new one be given? Will my line be stopped during this time? If the answers to these questions are not clarified at the moment of purchase, then even if the warranty certificate is in your hand, the process can drag on for weeks and the downtime cost can multiply the price of the motor. As HEM Motor, manufacturing electric motors since 1979, in this article we open up the subject of warranty from a manufacturer's eye but transparently and in the buyer's interest: what does a standard electric motor warranty cover, what does it not cover, how does the warranty process work, and which questions should you ask your supplier before buying? At the end of the article, you will find a warranty checklist you can add to your purchasing file.

What Does an Electric Motor Warranty Typically Cover?

The manufacturer's warranty is, in essence, a commitment against material and workmanship defects. Its practical equivalent is the following: insulation defects arising from winding production, rotor and stator manufacturing faults, factory-origin bearing mounting errors, frame and end-shield casting defects, and production errors in the terminal box and connection elements. If the motor, used under the conditions written on its nameplate (voltage, frequency, duty regime) and within the ambient limits defined in the catalog, fails due to one of these headings, the warranty comes into play. In HEM Motor-produced motors, IP55 protection and F insulation class are standard; the warranty commitment too rests on the principle that this standard structure will operate without problem under correct conditions. The critical point here for the buyer is this: as much as the scope of the warranty, the scope conditions (correct connection, correct protection elements, suitable environment) must be learned in writing at the purchasing stage. Because the large majority of warranty disputes arise not from the scope itself but from the conditions not being known.

What Is Not Covered by the Warranty? The 5 Most Common Out-of-Scope Situations

1. Damage from Wrong Connection and the Grid

Connecting a motor that should run in star as delta, operating it with a phase loss, and winding burnouts caused by overvoltage and an unbalanced grid are not manufacturing defects and do not fall within the warranty scope. In winding faults, the manufacturer's service determines the source of the fault with high accuracy from the character of the burn mark: phase loss, overload, and insulation defect leave different traces. For this reason, the demand "the winding burned, let it be replaced under warranty" always results in a technical examination. The precaution to be taken on the buyer's side is simple: have the commissioning done by a licensed electrician and have the motor protection switch and the thermal relay set according to the motor nameplate.

2. Overload and Wrong Application

Running a 3 kW motor on a 4 kW job, continuously straining the motor above its nameplate value, or using it in a duty regime different from that defined in the catalog (for example, using a continuous-duty motor with very frequent start-stop) is out of scope. The antidote to this risk is to share the application with the supplier at the purchasing stage; we explained step by step which information should be provided in the quote request in our article on the 8 pieces of information to provide when requesting an electric motor quote. A motor sold with the application information also creates an indisputable file on the warranty side.

3. Maintenance Neglect and Wear Parts

Bearings are working parts and their normal wear is not a warranty matter; however, early bearing failure arising from a factory mounting error is within scope. The distinction is determined by operating hours, grease condition, and the fault trace. Similarly, damage to a motor that overheats due to clogged cooling fins is considered maintenance neglect. Businesses that keep periodic cleaning and lubrication records strengthen their hand in the warranty process.

4. Unauthorized Intervention

Opening the motor in an unauthorized workshop during the warranty period, rewinding it, or replacing parts ends the warranty. In case of a suspected fault, the correct order is this: first call the supplier, give preliminary information with photos and video, and use the service channel directed. The reflex of "let's have the nearby rewinder take a look" can invalidate a warranty file in which you are in the right.

5. Transport and Storage Damage

Improper storage after delivery (keeping it in the open, exposing it to moisture) and damage occurring during customer transport are outside the manufacturer's warranty. Checking the packaging at the moment of delivery, having a report drawn up by the carrier if there is damage, and storing the motor in a dry environment while turning the shaft from time to time eliminate this risk.

Examining electric motor warranty scope and the service process

How Does the Warranty Process Work? 5 Steps from Fault to Solution

A well-designed warranty process proceeds in the following steps. First step, notification: the fault date, the motor's nameplate information, the invoice/delivery note number, and a short description of the fault are conveyed to the supplier; a photo and, if possible, a short video accelerate the process considerably. Second step, preliminary assessment: the seller evaluates the character of the fault by phone or over images; some situations (such as a wrong thermal setting) are resolved in the field without the motor being sent. Third step, examination: when the motor reaches service it is opened and the fault source is reported. Fourth step, decision: if within scope, repair or replacement is carried out; asking before purchasing which is applied in which situation is the buyer's right. Fifth step, delivery: the motor is delivered in working condition and the work done is reported. For the buyer, the most critical question in this chain is how many days the process will take in total; ask this duration at the purchasing stage and have it recorded. The second factor affecting the speed of the process is the quality of information: between a notification that arrives complete with a nameplate photo, invoice number, and fault video and a notification consisting of the sentence "the motor is not working," there is a difference of days in terms of solution time. Asking your supplier for the fault notification template at the time of purchase and sharing it with your maintenance team eliminates this difference from the start.

The Real Issue: What Will Happen to Your Line During the Warranty?

The warranty rescues your motor but does not automatically rescue your production. While the examination and repair take days, the stopping of the line writes off a loss greater than the price of the motor in most businesses. For this reason, the most valuable question in the warranty discussion is this: "Can you provide a replacement motor during the examination, or can I buy a new one immediately from stock?" The difference between being a manufacturer and stocking seller emerges exactly here. Because HEM Motor keeps common combinations in the 0.55–355 kW range in stock, it is possible to ship an equivalent motor from stock the same day while the warranty examination is ongoing; the power-speed variety in the standard electric motors series corresponds exactly to the large majority of motors in the field. For businesses working with many motors, this matter goes beyond a single warranty case and becomes part of the supply contract; we addressed mechanisms such as framework agreements and stock commitments in our article on methods to reduce cost in wholesale electric motor purchasing.

Checklist of electric motor warranty questions before purchase

8 Warranty Questions to Ask Before Buying

  • How long is the warranty and on what date does it begin? The invoice date or the commissioning date? Projects can be commissioned months later; clarify the start date.
  • What exactly is the scope? Ask for the scope in writing for the winding, bearing, frame, and electrical components.
  • Which conditions of use are required? Learn the expectations for protection elements, commissioning, and maintenance from the start.
  • Where and how is a fault reported? Is there a single phone/contact point, or will they send you from service to service?
  • What is the target time for examination and solution? Ask for an answer in days.
  • Repair or replacement? Ask in which fault a repair is done and in which a new motor is given.
  • Is a replacement or urgent supply from stock possible during the examination? This is the question that determines your downtime risk.
  • Who bears the transport? Clarify who bears the outbound and return transport of the motor under warranty.

Get the answers to these eight questions in writing by email at the quotation stage and add them to your purchasing file. Most warranty disputes arise from details not discussed at the moment of sale; a written answer protects both you and the seller. The advantage of buying from the manufacturer is clear here too: intermediary firms are a mailbox that relays warranty claims to the manufacturer, whereas the manufacturer resolves the fault directly with its own service and production knowledge. At HEM Motor, which provides manufacturer-warranted electric motor supply to businesses across Turkiye, the entire process from notification to solution is carried out from a single source.

Commissioning: The First Steps That Protect Your Warranty

A significant part of disputes within the warranty scope arise from errors made on the motor's first day in the field. For this reason, commissioning is in effect the first step of warranty management. Have the suitability of the voltage and connection type (star/delta) on the nameplate of the motor you receive to your grid and starting method checked; confirm that the terminal bridges are in the correct position. Have the thermal relay set according to the rated current on the nameplate, and have the no-load current of the motor measured and recorded at the first start; this measurement is proof that the motor operated soundly at the outset in the event of a fault that may occur later. In belt-pulley applications, the belt tension not being excessive is critical for bearing life; in coupling applications, performing the axis alignment prevents vibration-related faults. Record the name and date of whoever did all these operations on a small commissioning form. This five-minute recording discipline closes the question "was the motor commissioned correctly" from the start in a possible warranty file and reduces the process to a purely technical examination; this in turn shortens the solution time noticeably.

Warranty Documents That Should Be in Your Purchasing File

The precondition for using your warranty right without problems is the right document standing in the right place. The following five documents should be in your purchasing file: the invoice and delivery note (with date, serial/batch information), the motor's nameplate photo, the quote correspondence (including the email containing the scope and duration answers), the commissioning record, and any periodic maintenance records. In businesses that buy more than one motor, a simple list matching each motor with its location in the facility (e.g. "7.5 kW 4-pole — belt drive 3") speeds the process considerably; in a fault notification, you do not struggle to describe the motor but give the line number. This discipline has one more benefit on the purchasing side: motors whose warranty period is about to expire can be tracked from the list, and the backup or renewal decision for motors in critical positions can be made in a planned way before a fault is at the door. Although document order may sound bureaucratic, it means finding within seconds every document sought when the line stops; it should not be forgotten that every hour lost in the warranty process returns as a production loss.

Supplier Choice Determines the Warranty Experience from the Start

Two warranty certificates of the same scope can turn into completely different experiences at two different suppliers. What is decisive is not the paper but the organization behind it. When evaluating, look at three questions. First, who is the contact? At an intermediary selling imported products, a warranty claim often turns into overseas correspondence and weeks are lost; at the manufacturer, the team examining the fault and the team producing the motor are under the same roof, and the decision comes quickly. Second, what is the state of the parts and stock strength? In situations requiring repair, having parts such as the bearing, end shield, and fan ready shortens the process by days; in situations requiring replacement, having an equivalent motor in the warehouse means your line does not wait. Third, the seller's past performance: do not hesitate to ask reference customers for the average solution time. These three factors, invisible on the price list, more than pay back any price difference if needed even once in the motor's life. When making the purchasing decision, add a column called "warranty solution speed" to your quote table and score the suppliers in this column too; you will see that the cheapest quote and the lowest-risk quote do not always stand in the same row.

Frequently Asked Questions

Is a motor with a burned winding replaced under warranty?

It depends. If the winding burnout arises from an insulation or production defect, it is within scope and the motor is repaired or replaced. Burnouts caused by phase loss, wrong connection, overload, or the absence of thermal protection are out of scope. The distinction is determined by the technical examination of the burn trace on the winding. If you have your motor commissioned with suitable protection elements and have the settings made according to the nameplate current, you largely eliminate both the fault risk and the scope dispute.

What can I do for a motor whose warranty period has expired?

For motors whose warranty period has expired, there are two paths: repair or renewal. When deciding on repair, look not only at the repair cost but at the motor's age, efficiency class, and the risk of the fault recurring; instead of repairing an old, low-efficiency motor at great expense, renewing it with a current IE3/IE4 equivalent is in most cases a more sensible purchasing decision. When you send the nameplate information, you can ask our sales team for a comparison of both options.

Is the warranty of a motor I buy from stock different from one produced to order?

No; the manufacturer's warranty is valid with the same scope and duration in both cases. The only difference is in the lead time: a stocked motor is shipped the same day, while a special configuration is taken into the production plan. In motors with special windings or special voltage, the warranty terms are stated separately on the quote; it is enough to check this line before ordering. For spare motors that will be kept in the warehouse for a long time, we recommend clarifying the warranty start date and storage conditions in writing at the order stage; this way, no loss of rights is experienced even in a spare motor commissioned years later.

Get a Quote

Make your motor investment based not only on price but on warranty and supply assurance. Send us your need; let us present the price, stock status, delivery time, and warranty terms on a single quote, in writing. You can examine our product pages for all series and reach the HEM Motor sales team at +90 (532) 345 49 86 or through our contact us page. Manufacturer assurance since 1979, same-day shipment for stocked products.