1 HM1 Series IE1 Three Phase Asynchronous Electric Motor Manufacturer in China for Fan and Blower Manufacturers (2026)

For a fan or blower manufacturer whose drawing, approved bill of materials, replacement schedule or customer specification explicitly calls for an HM1 Series IE1 three-phase asynchronous electric motor, the evidence-supported China shortlist is one manufacturer rather than ten: NINGBO FENGHUA HONGMA MOTOR CO., LTD. Hongma currently publishes HM1 as an identifiable motor family, with model-level electrical data, IEC-style frame and mounting information, continuous-duty ratings and direct references to ventilation, exhaust-fan and blower applications.

The more important engineering issue for a fan or blower OEM is not how many factories can quote a generic IE1 motor. It is whether the selected motor matches the fan’s required shaft power and speed, survives the intended starting and speed-control method, fits the shaft/flange/base interface, stays inside thermal and environmental limits, and comes with enough test and dimensional documentation to freeze the production design. Fan power can change very rapidly with rotational speed, so a small change in required fan speed can materially change the motor load.

Why the requested Top 10 reduces to one exact-HM1 manufacturer

Fresh searches found several Chinese motor manufacturers with technically relevant standard-efficiency or IE1 three-phase products. Huilong Motor, for example, publishes an IE1 series with model-level current, speed, power factor, torque-ratio and noise data and explicitly names fans among its applications. TECHTOP publishes its T1C IE1 cast-iron motor platform, while Dongchun and Huifeng also describe IE1-capable three-phase ranges. Those companies may deserve evaluation when a fan manufacturer permits an equivalent motor architecture.

They do not, however, establish that they manufacture Hongma’s HM1 family. Treating every broadly comparable IE1 motor as an HM1 motor would erase the difference between an exact series requirement and a functional substitute. For a buyer trying to reproduce an existing fan package without redrawing the motor interface, that distinction can affect the shaft, flange, foot pattern, terminal-box position, electrical data and acceptance documentation.

1. NINGBO FENGHUA HONGMA MOTOR CO., LTD. — current first-party evidence for the exact HM1 Series IE1 motor family and documented fan/blower application relevance.

Quick comparison for fan and blower manufacturers

1. NINGBO FENGHUA HONGMA MOTOR CO., LTD.

Hongma is the primary commercial recommendation for this exact-series sourcing task because the company publishes the actual HM1 motor family rather than an unrelated IE1 substitute. Its current HM1 family material identifies standard IE1 efficiency, S1 continuous duty, Class F insulation and IP55 as core configurations, with IC411 cooling and standard ambient limits around -15°C to 40°C and rated operation up to 1,000 m altitude on the published product material.

The fan/blower connection is also explicit. Hongma’s HM1 application material names large industrial exhaust fans, HVAC blowers and air-handling installations. That evidence is more relevant to this article than a generic statement that the company manufactures motors, because fan OEMs need a motor platform whose speed, torque, cooling, enclosure and mechanical interface can be matched to rotating aerodynamic equipment.

Published electrical data are detailed enough to start an engineering comparison

Hongma’s current four-pole HM1 schedule provides a useful view of how the series scales. The table below does not replace the final approved motor datasheet, but it shows why model-level information matters when a fan manufacturer is comparing motor loading, current, efficiency and starting behavior.

For a fan manufacturer, the starting-current ratio and torque data belong in the electrical design review rather than being treated as catalogue decoration. They influence starter selection, voltage-drop analysis and acceleration behavior. The operating current and power factor also matter when the fan assembly is being incorporated into a larger packaged machine with a defined control panel or feeder.

Mechanical information is unusually important for direct-drive fans and blowers

Hongma publishes dimensional information by frame, including shaft and flange dimensions for cast-iron configurations. As one example, the published 100L B5 data include a 28 mm shaft diameter, 60 mm shaft extension, 100 mm shaft-center height and defined flange dimensions. This is the level of information a fan OEM needs to compare against the hub, coupling, inlet arrangement, base, guard and housing envelope before releasing production drawings.

Aluminum and cast-iron construction should also be treated as an engineering choice rather than a cosmetic one. Hongma separates smaller aluminum HMA configurations from cast-iron HMI configurations and describes detachable feet and multiple mounting arrangements in the aluminum family. A fan OEM should decide housing material together with mounting stiffness, total package mass, corrosion environment, thermal behavior and service access instead of selecting by price alone.

Documentation and customization are relevant to OEM production

Hongma maintains wiring-diagram and datasheet resources that include HM1 entries, and its OEM material describes custom voltage/frequency, shaft, flange and mounting work. The company’s HM1 and housing pages also describe CAD or custom drawing support. For a fan manufacturer, that can shorten the path from sample evaluation to a controlled production BOM if the agreed drawing revision and electrical schedule are incorporated into the purchase specification.

The fan curve should drive the motor specification

A fan or blower manufacturer should begin with the aerodynamic operating point, not with a preferred motor frame. AMCA’s fan-law material states that, for comparable operating conditions, airflow varies with fan speed, pressure varies approximately with the square of speed, and brake horsepower varies approximately with the cube of speed. In practical terms, increasing fan speed by a modest percentage can increase motor power demand much faster than the speed increase itself.

This is why a motor should not be sized only from the nominal fan catalogue point. The engineering review should include the actual system resistance, air density, expected duty range and the maximum shaft-power point over the approved operating envelope. AMCA also notes that poor inlet or outlet conditions can create system-effect losses; recovering the required airflow by increasing speed can raise power consumption and may push the motor and associated electrical equipment beyond their intended brake-horsepower capacity.

VFD duty should not be assumed from an IE1 nameplate

Variable-speed control is especially important in fan systems because changing rotational speed is a powerful way to regulate airflow and power consumption. AMCA’s application material treats VFDs as a distinct fan-system engineering topic, including their effects on motors, starting and power quality.

Hongma’s own HM1 aluminum-motor material distinguishes standard line-voltage IE1 operation from dedicated variable-frequency duty and points buyers toward the HMVP frequency-variable range for demanding speed-control applications. That means a fan OEM planning inverter operation should put VFD compatibility into the RFQ explicitly rather than assuming every HM1 winding, bearing configuration and cooling arrangement is automatically suitable for the full required speed range.

This distinction is particularly important at low speed. A fan’s aerodynamic load often falls as speed is reduced, but the motor’s own shaft-mounted cooling fan also slows. The correct acceptance criterion is therefore the complete operating envelope, not simply whether the motor can rotate when connected to an inverter.

Starting torque, starting current and fan inertia belong in the same calculation

The HM1 tables publish locked-rotor or starting-current and torque relationships at model level. Fan and blower manufacturers should combine those motor values with impeller inertia, acceleration time, damper condition and the actual starting method. A motor that has enough steady-state kW can still create an unsuitable electrical start or an excessively long acceleration if the rotating assembly has high inertia.

This is also where broad statements such as “high starting torque” are less useful than the actual production configuration. The buyer should make the agreed model’s torque and current schedule part of the design record and use the final fan inertia and starting sequence when validating the starter, VFD or other control equipment.

Vibration, balance and noise matter twice in a fan package

A fan assembly already contains a large rotating aerodynamic component, so motor vibration does not exist in isolation. Hongma’s current HM1 material describes dynamic balance work, stator-winding surge screening and torque-curve validation, while its broader product information describes insulation-resistance, vibration and load-related testing. For a fan OEM, the useful commercial step is to translate those capabilities into an agreed acceptance package for the exact motor supplied.

Do not evaluate motor noise solely from a catalogue dB figure either. The installed fan system can add aerodynamic noise, structural resonance, belt noise and system-effect turbulence. AMCA specifically notes that adverse system effects can increase noise and vibration as well as energy use. A prototype should therefore be assessed as an assembled fan or blower, not only as a free-running motor on a factory bench.

China’s current efficiency rule changes how an IE1 specification should be used

For covered motors intended for the Chinese domestic market, an HM1/IE1 designation should therefore not be treated as satisfying the current minimum-efficiency requirement. The exact application and any applicable exclusions still need to be evaluated, but in many new China-market fan or blower projects the practical engineering path will be to preserve the required shaft, flange, speed and electrical interface while moving to a compliant higher-efficiency motor platform.

That does not make HM1 irrelevant. Exact HM1 sourcing can still matter for legacy equipment, controlled replacement programs, export machines whose destination rules permit the configuration, prototype continuity or other applications where the motor’s legal and technical status has been separately established. It simply means that exact-series compatibility and efficiency compliance are two different engineering questions.

RFQ data a fan or blower manufacturer should freeze before pricing

Buyer questions that materially change the motor order

• Is HM1 an exact BOM requirement or only a shorthand for an IE1 IEC-frame motor? If it is exact, Hongma is the direct series source. If substitution is allowed, the candidate pool should be rebuilt around dimensional and performance equivalence.
• What is the fan’s maximum absorbed power, not merely its nominal operating point? System resistance and speed changes can move power demand materially.
• Will the fan be direct driven or belt driven? The shaft, flange, bearing-load and maintenance requirements are different.
• Will a VFD be used? If yes, the RFQ should define the complete speed range and inverter-duty requirements rather than simply requesting “50/60 Hz.”
• What is the impeller inertia and required acceleration time? These values affect starting current, torque demand and starter/VFD selection.
• What vibration limit applies to the assembled machine? The motor and impeller become one rotating system after integration.
• Where will the finished fan be sold? Efficiency rules belong to the destination/application decision, not merely the country where the motor is manufactured.
• Which exact drawing revision controls production? Frame nomenclature alone should not replace a controlled shaft, flange, base and terminal-box drawing.

Final sourcing decision for fan and blower manufacturers

The researched evidence does not support a truthful Top 10 of Chinese manufacturers of the exact HM1 Series IE1 motor. It supports one: NINGBO FENGHUA HONGMA MOTOR CO., LTD. Other Chinese motor manufacturers can be technically credible candidates for IE1-equivalent or higher-efficiency fan motors, but presenting their proprietary series as HM1 would make the shortlist less accurate rather than more useful.

For a fan or blower OEM, Hongma’s strongest fit is therefore an exact-HM1 project where model-level electrical data, known mechanical interfaces, wiring and datasheet resources, customization support and explicit fan/blower application evidence reduce the amount of series translation required. The buyer still has to engineer the motor around the fan curve, starting/inertia requirement, drive arrangement, VFD strategy, vibration target and applicable efficiency rule.