Leading Electric Motor Manufacturer In China

XinNuo Electric Motors Co. Ltd., is a pioneer in manufacturing electric motors in China since 2000. We have a wide range of clients from all over the world stretching from the UK to South America, Southeast Asia, Europe, Middle East, and the African continent.
With a combined annual revenue of over $10 Million USD, Xinnuo Motor has up to 10 foreign trading staff, about five R&D staff, and a total of over 140 regular employees, many of whom are well-experienced in motor manufacturing since a decade or more with us. We have over 10 production lines and three installation workshops.

Our Factory

To understand clearly well how an asynchronous motor manufacturing factory works, you need to decode the different zones and stages of production of our establishment. Come, let us take you on a factory tour.

Raw Material Warehouse

The first part of the motor manufacturing factory is where the raw materials for building industrial-grade motors are stored. Once the raw materials are received from sellers, our special team of executives conduct a thorough inspection of their quality.
Quality Control personnels will further acquire random samples of the raw materials to conduct random inspections every week in order to maintain optimum use and storage of raw materials. They are then used after certifying quality and grade before getting moved into production.

Stamping Workshop

The process of stamping, pressing, or metalworking comes next where raw materials are added to the stamping press to create molds or shapes. This may include blanking, embossing, flanging, bending, or coining depending on the motor being produced.
Here, up to 315 tons of weight are processed periodically with up to 20 stamping machines. This ensures high-quality of the steel sheeting being produced for industrial-grade motors.

Rotor workshop

A rotor is typically an item that’s added to the motor shaft and situated inside the stator with a gap existing between both. This mainly comprises high-quality electromagnets to complete the inspection. It’s created by making the frame, followed by coiling, commutator, holder, and adding final touches to the motor manufacturing.
In Xinnuo Rotor Workshop, we use up to 15 Computer Numerical Control (CNC) lathes leading to the production of 15,000 rotors per month. To manufacture a motor, rotor assembly is sent to the production space.

Frame workshop

Aluminum-based frames are built for single phase and three-phase motors for extra durability and support at Xinnuo Motors. A die caster is typically used for creating end frames for motors. It’s typically mounted on the motors and motors today usually need two frames.
You can get in touch with us if you have any specifications over the size of motor frames. If you’re thinking about figuring out the right size of frames, talk with our experts to find the right dimensions today itself.
Xinnuo Motors has a CNC vertical lathe producing machine case that includes a one-time forming. It’s directly used for heightening the concentricity in a professional setup. Truth be told, our workshop staff have individual experience of over 8 years and are capable of executing sophisticated works easily.

Embedding workshop

This is where all the embedding processes take place. At Xinnuo, our automatic wire insertion completes one stator between rotors in under one minute. We are proud to declare that our e.mployees have experience of working in the embedding workshop for over a decade.

Dipping workshop

Insulation dipping treatment at Xinnuo has state of the art functionalities. Typically, the equipment is completely immersed and soaked in a sealed container for vacuuming. Here, a class F insulating varnish is used for every batch and they’re soaked for 12 hours. Such a mechanism is the reason for the global-grade F-Class insulation standard for all motors produced by Xinnuo.

Installation workshop

All the assembling and installation work of the motor is completed with machines and hand at this workshop for Xinnuo products. With over three installation workshops, our facility houses over five assembly lines for matching the installation of varied-size motors.

Packing workshop

This is where the final motor undergoes packaging no matter what transit entails it in the future. Every product is individually packed in a honeycomb box and twice over the packing belt before proceeding to the plastic wrap. It is then fixed in four directions so that the motor can end up reaching your hands with utmost safety.

In addition, we also adhere to European standards for shipping packaging so you can be sure your wholesale purchases are safe and sound till it reaches your doorstep.

Quality Control & Inspection

To understand clearly well how an asynchronous motor manufacturing factory works, you need to decode the different zones and stages of production of our establishment. Come, let us take you on a factory tour.

Raw material Test

IQC or Incoming Quality Control is the first step of quality control where the raw materials are assessed for top-quality before the production process commences. In this stage, the respective QC personnel assess each type of material that enters our factory.
After certifying the optimum quality of raw materials, they are again investigated thoroughly per week for depreciation or damages throughout the duration of storage.

Rotor detection

A unique system where the rotary values that are functional are inspected to remove chances of rotary valve scraping and other failure rates. That’s the general rotor detection system but at Xinnuo, we engage in a dynamic balance testing process for every rotor that’s produced in-house.
The chief goal of such a dynamic rotor balancing process is to eliminate the jitter and trembling found on the drive shaft. Such an inspection ensures long lifespan of the motor and ensures high-stability of the motor.

Stator Surge Tests

To put it simply, stator surge test in motor manufacturing refers to the detection of failure or fault rates by analyzing a spike in the resonant frequency. This test can be conducted on the winding of the motor sans making a connection on the motor. Such a test assesses the voltage pulse between the three windings of the motor by connecting it to the load side of the motor.
This is an important QC test because they’re the standalone tests for detecting weaknesses in turn-to-turn isolation. It can help prevent winding failures, phase-to-phase weakness, high partial discharge, wrong turn count, wrong coil, wrong gauge wire, partial blowout, and shorts.

No-load current detection

With the megger test, the insulation tester resistance is assessed to check the capacity and stability of the electrical insulation. The insulation resistance is known to depreciate over time and environmental conditions such as dust and humidity.
Our QC personnel use no-load current for enhancing the winding resistance, thereby improving the megger value.

Leakage detection

For motors made from steel and plastic, the housing is testable via a test called accumulation test detection. First, the housing is emptied properly and backfilled with a forming gas as tracer gas or helium at 5 bar and finally, sealed.
The housing that’s filled gets placed in the accumulation chamber and further monitored by an AQ Leak Detector equipment. The same process with sufficient improvisations can be used for detecting vacuum leaks too.

Final inspection

The final stage of Quality Control processes at Xinnuo Motors include the inspection of the appearance of the motor. Generally, personnel checks for blemishes, scratches, chipping, and other flaws or damages to the motor that’s visibly present. It’s followed by the inspection of the packaging so that it can sustain long or short transit.

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