When the winding burns out, the owner has two options: rewinding vs new motor. In 2026, the choice is no longer as obvious as it was five years ago - the price of copper has increased, logistics have changed, and new series of imported motors have appeared. In this article we will analyze both options in terms of price, resource and timing, and at the end we will give a step-by-step algorithm by which the decision is made by engineers of enterprises in Tashkent.
Cost comparison
The main argument in favor of rewinding is savings. High-quality restoration of the winding in the Tashkent service in 2026 will cost 30–55% of the price of a new similar engine. For imported and non-standard series, the gap is even greater: a new unit can cost 2–3 times more than rewinding.
| Parameter | Rewinding | New engine |
|---|---|---|
| Price | 30–55% of the cost of a new one | 100% market prices |
| Selection by size | is not required - the same body is retained | you need to check the flange, shaft, axle height |
| Logistics | within the city | import is possible, currency risks |
| Documents | engine passport is retained | new passport, re-registration in OS accounting |
| VAT and customs | service only | equipment + possible duties |
For standard asynchronous motors 4–55 kW rewinding almost always more economical. But for low-power motors up to 1.5 kW, the picture is the opposite: the cost of work is comparable to the price of a new one, and it is easier to buy a new one.
Comparison in terms of service life and reliability
A common myth is “a rewound motor works half as much as a new one.” In practice this is not the case. Subject to technology:
- A winding wire of the same heat resistance class is used (usually F or H).
- High-quality vacuum or drip impregnation with varnish is used.
- The factory laying pattern and pitch are retained.
- The condition of the iron package is checked, if necessary, a bulkhead.
- A full range of tests is done: insulation resistance, no-load current, heating.
The service life of the rewound stator with this approach is comparable to the factory one - 7–15 years, depending on operating conditions. The main risk of rewinding is a violation of technology: too high a drying temperature damages the insulation of the grooves, and saving on wire reduces the protection class. Therefore, who exactly does the work is critical.
Timing and Availability
In 2026, logistics remains a bottleneck for imported engines. Delivery of a new motor of a non-standard series can take from 3–4 weeks to 2 months. Rewinding in Tashkent takes 5–14 days, and in urgent repair mode - 2–4 days.
| Scenario | Rewinding | New engine |
|---|---|---|
| Standard AIR, in stock | 5–10 days | 1–3 days |
| Engine out of production | 5–14 days | analogue for selection, 2–8 weeks |
| Imported (Siemens, ABB, WEG) | 7–14 days | 4–8 weeks |
| Emergency downtime lines | urgent mode: 2–4 days | only if in stock at the dealer |
When rewinding is definitely more profitable
There are scenarios in which the choice is obvious in favor of restoration. Rewinding is justified when:
- The engine has been discontinued.It is impossible to select a new unit with the same mounting dimensions or will require reworking the foundation and coupling.
- This is an imported series with a long delivery period.A simple line will cost more than the price difference.
- Power from 11 kW and above. Savings in absolute numbers become significant.
- Engine crane, elevator or special.For crane electric motors and elevator equipment, replacement is always an individual project, and rewinding is a standard operation.
- The housing, shaft and iron package are in good condition. If only the winding is damaged, there is no point in changing the remaining 80% of the motor.
- To the motor The operating history is “hardwired.”The modes, loads, and temperature profile are known—switching to a new unit requires re-tuning the drive.
When a new engine is the right decision
The purchase of a new unit is justified in the opposite cases:
- Low power (up to 1.5–2.2 kW).Rewinding labor costs are comparable to the price of a new one motor.
- The iron of the stator or rotor is damaged.Restoring the package is an expensive operation, sometimes economically meaningless.
- The motor has already been rewound 2-3 times.Each rewind reduces the cross-section of the groove, heat dissipation deteriorates.
- The housing, shaft, and bearing seats are heavily worn. Restoration of the metalwork will partly eat up the savings from rewinding.
- Modernization of the drive is planned. If you switch to IE3/IE4 with frequency control, it is logical to install a modern motor with a suitable insulation class.
- The engine operates in an aggressive environment and often burns.Perhaps it is cheaper to buy a motor with the correct IP and class once than to rewind it once a year.
Decision-making algorithm
In order not to guess, it is convenient for the engineer to go through a simple block diagram in text form. Answer the questions sequentially - the answer “yes” leads to the next point.
- Is the engine functional in terms of housing, shaft and hardware?
No → new engine.
Yes → step 2. - Is this the first or second rewind?
Third or more → seriously consider buying a new one.
Yes, first-second → step 3. - Power higher than 2.2 kW?
No → a new one is often more profitable.
Yes → step 4. - Is there a new analogue in stock in Tashkent at an adequate price?
No (import, long delivery, discontinued) → rewind.
Yes → step 5. - Is a simple line worth more than the difference in price?
Yes → rewinding in urgent mode.
No → step 6. - Is it planned to upgrade the drive or switch to IE3/IE4?
Yes → new motor.
No → rewinding.
This chain covers 90% of the real ones situations. The remaining 10% are non-standard cases (explosion protection, special designs, tandem drives), where the decision is made together with a service engineer after an on-site diagnosis.
What to choose in typical scenarios
Several typical cases from the practice of Tashkent enterprises:
- 7.5 kW pump at a water utility, the winding burned out, the body is intact. Definitely rewinding the winding - savings of about 50%, period of a week.
- Fan motor 1.1 kW, AIR series. Most likely a new one - in stock, rewinding is not justified due to labor costs.
- Imported Siemens 30 kW motor on the conveyor. Rewinding - delivery of a new one takes 6-8 weeks, downtime is unacceptable.
- Crane motor MTKH or AMTKF. Rewinding - new analogues are expensive and are selected individually.
- The engine after the third rewind, the bearings began to fly. New - the resource is no longer the same, the risks are higher than the savings.
Need help? Contact the Elektromotors engineers - we will assess the condition of the engine for free using the photo and nameplate, and after diagnosis we will honestly tell you what is more profitable: rewinding or replacement. Application and contacts - on the page contacts.