Machinery & equipment
Electrical Motors
Motors and the parts they are wound from, designed for the efficiency class and duty the application requires and tested on our own dynamometers.
Made at Ningbo · Bac Ninh · Dongguan
Development and manufacture
Efficiency class is where motor development now lives. Moving a frame from IE3 to IE4 or IE5 is not a matter of more copper — it changes the lamination grade, the slot fill, the rotor design and often the frame size, and each of those has a cost the buyer should see before deciding. We model the machine, build it, and put it on a dynamometer, then hand over the measured efficiency curve rather than a class label.
Lamination stamping, core stacking, winding, impregnation, rotor casting and final assembly are ours, and so is the insulation material that goes into the slot — which is unusual, and useful, because the insulation system and the winding are qualified together rather than separately. Every motor is run, hi-pot tested and vibration checked before it is packed.
Product scope
Three-phase asynchronous motors
IE4 and IE5 induction motors from 0.12 to 355 kW in aluminium and cast iron frames, foot, flange and face mounted.
Permanent-magnet synchronous motors
Line-start and inverter-driven PMSM for pumps, fans and compressors, with efficiency held across a wide load range.
Servo and stepper motors
Servo motors from 0.1 to 15 kW with 17 and 23-bit encoders, plus hybrid steppers with integrated drives.
Miniature brushless DC motors
Compact BLDC motors for fans, pumps and appliances, with integrated Hall sensing and speed control.
Stator and rotor cores
Stamped and stacked laminated cores in 0.35 and 0.50 mm silicon steel, interlocked, welded or bonded.
Enamelled copper winding wire
Round and rectangular enamelled wire in polyester imide and polyamide imide grades, thermal class 180 and 200.
Held in production
What the line holds, and how we know.
These are figures sustained across a production run rather than a best-case first article, each with the instrument or test that produces it.
| Characteristic | Held in production | Verified by |
|---|---|---|
| Efficiency class | IE4, IE5 on nominated frames | Dynamometer to IEC 60034-2-1 |
| Power range | 0.12–355 kW | Type test per frame size |
| Insulation class | F or H, class B temperature rise | Temperature rise test |
| Ingress protection | IP55 standard, IP65 optional | Type test to IEC 60529 |
| Vibration | Grade A to IEC 60034-14 | Vibration measurement, every motor |
| Winding wire enamel | Grade 2 build, class 200 | Breakdown voltage and adhesion tests |
Built and released against
- IEC 60034-30-1 efficiency classes for line-operated motors
- IEC 60034-1 rating and performance of rotating machinery
- NEMA MG 1 for North American frames
- UL 1004-1 and CSA C22.2 motor safety
- IEC 60317 specifications for enamelled winding wires
Who buys it
- Pumps, fans and compressors
- Machine tools and automation
- Conveyors and material handling
- HVAC and building services
- Household appliances
- Electric vehicle auxiliaries
Related work
Neighbouring industries.
Programmes often cross these lines. Where a part touches more than one of them, a single engineer owns the whole thing rather than handing it between departments.
All industriesSend a drawing or a specification.
An engineer from the electrical motors team replies within one business day with feasibility, the line it would run on, the tooling route and an indicative delivered cost.