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LHPS140 Series 140MM Permanent Magnet Synchronous Motor For Industrial Ventilation

  • LHPS140 high-power inner rotor PMSM is a heavy-duty power solution developed by LINGHU for heavy industrial equipment.
  • It adopts robust inner rotor structural design and high-performance magnetic materials to sustain heavy load operation stably.
  • The series offers two power grades to satisfy high-load industrial driving demands.
  • It features strong overload resistance and excellent thermal dissipation performance, maintaining stable operation under long-term heavy-duty working conditions as a reliable power source for heavy industrial machinery.
Availability:
Quantity:
  • 140

Product Advantage

1. Premium-grade silicon steel laminations effectively reduce core loss and improve energy efficiency. Engineered to strictly comply with IE4 and IE5 ultra-high energy efficiency standards, this motor drastically cuts operational power consumption compared to traditional alternatives. For facility managers overseeing extensive ventilation networks, this translates directly to a significantly shortened investment payback period. Even during prolonged, heavy-load operation, the exterior housing remains remarkably cool to the touch, indicating minimal thermal waste and superior magnetic permeability.

2. Pure copper windings suppress temperature rise and enhance motor thermal stability. Featuring advanced IP55 and IP65 protection ratings alongside Class F and H insulation, the internal electrical architecture is fully shielded. When newly unboxed, the dense copper coils emit a faint, clean metallic scent, a testament to their raw material purity. These robust windings ensure stable performance without degradation, fearlessly withstanding high-humidity atmospheres, heavy airborne dust, and extreme temperature fluctuations common in demanding industrial environments.

3. High-precision dynamic balance guarantees ultra-low vibration and quiet operation. Before leaving the manufacturing facility, every single unit undergoes a punishing battery of quality control tests, including salt spray corrosion exposure, severe high-low temperature shocks, and full-load aging cycles. This rigorous testing guarantees that each motor delivers a consistent, whisper-quiet hum during active duty. The meticulous balancing eliminates disruptive mechanical rattling, protecting surrounding structural mounts from fatigue and ensuring batch quality remains highly consistent.

4. Industrial heavy-duty bearings enable long-term continuous stable operation. Designed for the relentless demands of commercial air circulation, these precision bearings glide fluidly with minimal friction. They require virtually no routine lubrication, dramatically reducing maintenance interventions and eliminating unexpected equipment downtime. This reliable mechanical foundation keeps critical ventilation systems running 24/7 without interruption, providing peace of mind for continuous-duty applications.

Technical Parameters

Model

Voltage(V)

No Load

Rated Load

Rated

Speed (rpm)

Current (A)

Torque (mNm)

Speed (rpm)

Current (A)

Output P. (W)

LHPS140-2.2

220

1450

0.3

14.5

1450

10

2200

LHPS140-3.0

220

1500

0.5

19.1

1450

14

3000

LHPS140 Permanent Magnet Synchronous Motor Exterior Dimensions

Product Uses

This series of permanent magnet synchronous motors matches the full spectrum of conventional AC fan motors and energy-efficient EC permanent magnet fan motors. Backed by rigorous CE, RoHS, and ISO9001 international certifications, these units guarantee barrier-free global market access and strict safety compliance for international integrators. Widely applied in mainstream export industries including industrial manufacturing, commercial ventilation, environmental governance, new energy, agriculture and animal husbandry, the motors precisely satisfy multi-condition requirements such as dust resistance, high-temperature tolerance, continuous-duty operation, energy saving and variable speed regulation.

I. Refrigeration & Temperature Control Equipment Industry

Applicable Equipment: Industrial cooling fans, evaporative cooling fans, cold storage condenser fans, refrigeration unit cooling fans, oven cooling circulation fans.

Designed for the piercing chill and constant condensation found in long-term high-humidity environments, continuous start-stop cycles, and constant-temperature, constant-load operation. The motors feature specialized moisture-proof and corrosion-resistant designs, effectively blocking water vapor ingress and making them highly resistant to burnout or rust. With ample torque and stable low-temperature startup capabilities, these fans meet the year-round cooling, heat dissipation, and air circulation needs of critical equipment, proving widely compatible with industrial refrigeration, commercial cold storage, and temperature-controlled drying facilities.

II. Livestock Farming & Agricultural Greenhouse Industry

Applicable Equipment: Negative-pressure exhaust fans for livestock farms, greenhouse circulation fans, greenhouse cooling fans, ventilation and deodorization fans for livestock housing.

Livestock farming and agricultural greenhouse environments are notoriously characterized by high humidity, pungent ammonia corrosion, thick airborne dust levels, and round-the-clock operational demands. The entire motor unit is IP-rated to be dustproof, moisture-resistant, and resistant to mild chemical corrosion, capable of withstanding these harsh outdoor and indoor conditions over the long term. By delivering stable operation and an exceptionally low failure rate, these units significantly reduce farm maintenance costs and are perfectly suited for ventilation, cooling, dehumidification, and odor removal in pig farms, poultry farms, cattle and sheep farms, as well as expansive flower and vegetable greenhouses.

III. Power & New Energy Industry

Applicable Equipment: Boiler supply and induced draft fans for power plants, cooling tower fans, converter/inverter cooling fans, and energy storage system cooling fans.

Power equipment demands extremely high standards for structural stability, operational safety, and thermal management. These fans feature multiple built-in protections against motor overload and overheating, ensuring 24-hour uninterrupted, trouble-free operation even under intense thermal loads. The EC permanent magnet models offer ultra-high energy efficiency, making them the optimal choice for cooling and ventilation in advanced new energy storage, photovoltaic arrays, and wind power supporting equipment, as well as heavy-duty cooling systems in thermal power plants and substations.

LHPS140 Motor Structural Profile and Mounting Details

Customer Operation Guide

I. Pre-Startup Checks

1. Ensure there is no debris inside the fan blades or protective grille. Run a hand along the exterior to confirm no hidden obstructions, and verify that the impeller rotates smoothly without any jamming—you should feel only the smooth magnetic resistance of the permanent magnets.

2. Check that the base and bracket screws are tightly secured to the mounting surface and that the unit does not wobble under manual pressure.

3. Verify that the power supply voltage and frequency perfectly match the specifications engraved on the nameplate, and that the wiring harness is free of abrasive damage or loose terminal connections.

II. Startup and Operation

1. After completing the visual inspection, turn on the power to start the unit. The equipment will accelerate via a soft start sequence—a gentle acceleration rather than a harsh mechanical jerk. A brief, slight acoustic noise during this ramp-up phase is completely normal.

2. Observe the unit for 10 seconds after startup. Place a hand near the mounting bracket to confirm the absence of violent vibrations. If there are no unusual grinding noises or abnormal exterior temperature rises, the unit has reached stable operation.

III. Helpful Usage Tips

1. For cooling and ventilation: Run the motor continuously at low speed throughout the day. This leverages the permanent magnet design for maximum energy efficiency and consistent thermal performance.

2. For dust and odor removal: Turn on the unit 3–5 minutes in advance of personnel entering the area to exhaust stagnant air and rapidly improve the workshop environment.

3. During humid seasons: Run the unit for short periods daily to actively ventilate the internal chamber, preventing moisture buildup and safeguarding against long-term rust.

FAQ

Question 1: What types of equipment and applications is this motor suitable for?

Answer: This series is universally compatible and works fluidly with axial fans, centrifugal fans, negative pressure fans, cooling fans, dust extraction fans, fresh air handling units, and condenser cooling fans. It can be confidently deployed in all industrial ventilation scenarios, including heavy factory ventilation, environmental dust control, agricultural greenhouses, commercial HVAC, refrigeration and drying, chemical and metallurgical industries, and deep mining tunnels. It operates reliably even in the harshest environments saturated with high dust levels, dense humidity, and punishing temperatures.

Question 2: Can the voltage and frequency be customized to meet international specifications?

Answer: Yes, we provide comprehensive global customization to match your exact regional power grid requirements. The motors are available in single-phase or three-phase configurations spanning 110V, 220V, 240V, 380V, and 400V. Furthermore, they are fully compatible with both 50Hz and 60Hz frequencies, making them the perfect plug-and-play solution for power grids across Europe, the Americas, Southeast Asia, the Middle East, and Africa.

Question 3: Can the shaft length, shaft diameter, flange, and mounting dimensions be customized?

Answer: Full end-to-end customization of physical dimensions is supported by our dedicated R&D team. We cover the entire power range from 0.37 kW up to 15 kW. Shaft dimensions, mounting methods, cable exit directions, and housing structures can all be precision-engineered according to the customer’s specific fan drawings. We proudly support comprehensive OEM/ODM services, moving rapidly from initial blueprint to physical prototype.

Question 4: How do you ensure stable delivery and safe transit for large-volume commercial orders?

Answer: We rely on highly automated production lines that guarantee rapid, consistent output to meet large-scale procurement demands without delays. Every shipment is meticulously secured in industrial-grade, shock-absorbent, and moisture-proof packaging specifically engineered to withstand the physical rigors of international ocean freight, ensuring your cargo arrives in pristine, ready-to-install condition.

Question 5: What level of technical assistance and warranty coverage is provided?

Answer: We stand firmly behind our engineering with comprehensive, long-term warranty commitments. Our dedicated technical team provides rapid-response online support to assist with system integration, performance troubleshooting, and routine maintenance guidance. This proactive support structure minimizes potential equipment downtime and drastically reduces long-term maintenance expenditures for our global partners.

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