3-Phase Electric Motor 37kW 50Hp

The 3-Phase Electric Motor 37kW 50Hp falls into the 3-phase electric motor product segment above 3.7kW, making it the optimal choice for industrial systems requiring high capacity, stable operation, and durability. With a sturdy design, powerful transmission capabilities, and high efficiency.

This electric motor is suitable for applications such as industrial pumps, air compressors, centrifugal fans, heavy-duty conveyors, and production lines. The product helps optimize working efficiency, reduce energy consumption, and well-satisfies continuous operating conditions in harsh industrial environments.

What is the general design of the 3-Phase Electric Motor 37kW 50Hp?

The 3-phase electric motor features a solid design with a monoblock structure, ensuring stable transmission torque and minimizing vibration during operation. With standard and reasonable dimensions, the device is easily installed into high-capacity machinery systems in industrial environments.

Additionally, the housing of the electric motor is made of corrosion-resistant cast iron or aluminum with good impact resistance, helping protect internal components from environmental impacts. The integrated cooling system using an air fan or water helps the motor operate stably, maintain high performance, and extend service life, meeting the requirements of continuous production lines or harsh working environments.

Internal structure

To withstand enormous energy loads and ensure continuous operation, the internal components of the 37kW 3-phase motor are manufactured from high-quality materials adhering to strict technical standards, including:

• Stator: The magnetic core is pressed from high-quality electrical steel sheets. The winding coil is made of 100% pure copper with a large cross-section, vacuum-impregnated with 2-3 layers of insulating varnish to ensure absolute safety and high temperature resistance (Class F).
• Rotor: A cast steel monoblock integrated with a squirrel cage made of pure copper or aluminum, dynamically balanced by a high-tech computer to keep the shaft stable at rated speed.
• Bearings: An indispensable component for large machines, typically using high-end roller bearings or deep groove ball bearings (such as SKF, NSK, FAG) to withstand heavy radial loads. Equipped with grease fittings for periodic maintenance.
• Cooling system: A large cross-section cooling fan made of heat-resistant plastic or aluminum alloy, combined with a sturdy steel protective cage.

What types of 3-Phase Electric Motor 37kW 50Hp are available?

The 3-Phase Electric Motor 37kW 50Hp is manufactured with various pole numbers to meet diverse requirements for rotational speed and torque in industrial applications.

3-Phase 37kW 50Hp 2-Pole Motor (2,800 – 3,000 rpm)

This is a high-speed motor line, suitable for equipment requiring high revolutions, high flow rates, and continuous operation.

Specifications

Code	200L
Shaft diameter	55mm
Keyway	16
Flange diameter	400mm
Weight	kg
Dimensions	770mm * 395mm * 505mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications

• Industrial centrifugal water pump: High rotational speed helps generate large water flow and pressure for water supply and drainage systems and pump stations.
• Centrifugal exhaust fan, high-capacity ventilation fan: Meets air circulation, dust collection, and exhaust gas treatment needs in workshops.
• Metal cutting machines, grinders, and mechanical processing equipment: High rpm helps increase productivity and machining quality.
• Industrial air compressor: Ensures stable and continuous operating performance.

3-Phase 37kW 50Hp 4-Pole Motor (1,400 – 1,500 rpm)

This is the most commonly used motor line due to its balance between rotational speed and torque, suitable for most industrial machinery and production lines.

Specifications

Code	225S
Shaft diameter	60mm
Keyway	18
Flange diameter	450mm
Weight	300kg
Dimensions	815mm * 425mm * 560mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Applications

• Industrial conveyors and assembly lines: Ensures stable, continuous, and efficient material transport.
• Stone crushers, wood shredders, and raw material grinders: Provides sufficient torque to operate under high loads.
• Concrete mixers, animal feed mixers, industrial agitators: Helps the mixing process take place evenly and stably.
• Air compressors, industrial presses: Meets continuous operating requirements with high durability and stability.

3-Phase 37kW 50Hp 6-Pole Motor (900 – 1,000 rpm)

This is a motor built with a greater number of windings, creating a slower rotating magnetic field but exceptionally massive pulling power (torque), specializing in continuous heavy-load operations.

Specifications:

Code	250M
Shaft diameter	65mm
Keyway	18
Flange diameter	550mm
Weight	300kg
Dimensions	910mm * 510mm * 615mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Concrete batching plants: Pulls large-volume fresh concrete mixing drums, requiring the motor not to drop rpm when feeding stone and cement.
• Stone crushers, ore crushers: Ensures continuous hard material crushing force in mining quarries.
• Inclined conveyors: Conveyor systems transporting coal or rocks from mines upward with large inclination angles.
• Industrial agitators: Stirring thick chemicals and paper pulp in tanks with capacities of tens of thousands of liters.

3-Phase 37kW 50Hp 8-Pole Motor (700 – 750 rpm)

Extremely slow rotational speed. The entire mechanical design, from the shaft diameter to the frame size, is maximized to optimize initial torque, helping the machine start even under the heaviest loads.

Specifications:

Code	280S
Shaft diameter	75mm
Keyway	20mm
Flange diameter	550mm
Weight	390kg
Dimensions	985 x 550 x 680 mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Cranes, gantry cranes, seaport hoists: Used for hoisting containers or tens of tons of steel blocks, ensuring smooth, absolutely safe lifting and lowering without load slipping.
• Hydraulic presses, steel rolling mills: Provides powerful and stubborn kinetic energy for mechanical steel sheet rolling and cold rolling lines.
• Scrap tire shredders, industrial waste shredders: Requires huge twisting force at slow speeds to tear apart tough and hard materials.

What type of gearbox does the 3-Phase Electric Motor 37kW 50Hp combine with?

Synchronizing the 37kW motor with a gearbox is an important technical problem to fully transmit mechanical pulling force. Due to the very large capacity and shaft dimensions (65mm, 75mm…), selecting a gearbox requires absolute precision regarding the safety factor:

• Heavy-duty helical gearbox (Heavy-duty series R, S, K, F): The most perfect combination. Typically uses large sizes like R107, R137 or K107, K127 for mining conveyor systems.
• Vertical worm gearbox / Bevel helical gearbox: Used in large mixing systems (gearbox sizes 155, 175, 200).
• Auxiliary transmission: It is mandatory to use gear couplings, fluid couplings, or double/triple C-groove pulleys to ensure slip-free transmission and protect the motor shaft during load jamming.

Instructions for connecting a 3-phase electric motor

Step 1: Remove the terminal box cover of the electric motor

Use a suitable screwdriver to remove the fixing bolts on the terminal box cover. After opening the cover, you will see the internal terminal posts. For common 3-phase electric motors, this area typically has 6 wire terminals clearly marked with symbols.

Step 2: Identify the connection terminals and 380V power supply

The wires in the terminal box are usually arranged in two rows. The bottom row, labeled U1, V1, W1, is the position used to connect the input power supply.

Step 3: Connect the 3-phase power supply to U1, V1, W1

Prepare 3 phase wires from the 380V power supply and proceed to connect them to terminals U1, V1, and W1 respectively. Ensure correct positioning for the motor to operate stably.

Important safety note:

Cable lugs need to be tightened to ensure good electrical contact, limiting electrical sparks that cause short circuits and fires. Do not connect power to the top terminal row (U2, V2, W2) to avoid damaging the motor windings.

Step 4: Close the cover and test run

After completing the connection, close the terminal box cover tightly and secure the bolts to protect the device from dust and moisture. Apply power to check operation. If the motor rotates in reverse, simply disconnect the power and swap the positions of two out of the three phase wires to reverse the rotation direction.

Strictly adhering to the connection procedure not only helps the system operate stably but also ensures safety during use. Electric motor videos from Thanh Thai Motor will be a useful reference source for users in practice.

Additionally, to learn more about products, quotations, and detailed instructions, you can refer to the video collection in the electric motor video category – which provides practical content directly implemented by the technical team.

Warranty, shipping and commitment policy at Thanh Thai Motor

Warranty up to 24 months

All electric motor products distributed by Thanh Thai Motor are covered by a genuine warranty for up to 24 months. Customers who purchase electric motors can completely rest assured with a transparent, fast, and professional after-sales policy.

Nationwide Shipping

Thanh Thai Motor supports nationwide shipping for all electric motors sold, ensuring safe and on-time delivery to every province across the country. Whether you are in the North, Central, or South, we are ready to serve you.

European Standard Quality – German Technology

Thanh Thai Motor sells electric motors manufactured with German technology, meeting European quality standards, ensuring durability, high efficiency, and stable operation for a long period – suitable for the strict requirements of industrial electric motors.

Competitive Prices – Attractive Offers for Dealers and Wholesale Customers

We commit to reasonable motor prices, offering the best electric motor products with high discount policies for bulk purchasers and distribution units. The more you buy – the better the profit.

Quality Commitment – Powerful Operation, Power Saving

Thanh Thai Motor sells electric motors wound with 100% copper wire, helping the machine run powerfully, consume less electricity, operate smoothly, and effectively reduce vibration – extending equipment lifespan. When purchasing an electric motor, prioritizing products with 100% copper core will be a wise decision, bringing long-term value.

At Thanh Thai Motor, we provide a full range of products, with various phases and capacities, such as:

• 220V electric motors (or 220V 1-Phase electric motors) are 1-Phase electric motors commonly chosen for many household appliances and light industrial equipment, offering convenience and efficiency.
• 380V electric motors are 3-Phase electric motors using three-phase power, commonly used in heavy industrial applications.

Full CO, CQ Certification Documents

Thanh Thai Motor provides the best quality electric motors. Each imported electric motor product from Thanh Thai Motor comes with a Certificate of Origin (CO) and a Certificate of Quality (CQ), meeting the requirements for large projects, constructions, and strict technical documentation.

Contact for Purchase

Do you need to buy an electric motor or seek advice on choosing an affordable electric motor that suits your needs? Contact Thanh Thai Motor immediately using the methods below:

• WhatsApp: +84966596219
• Email: codienthanhthai@gmail.com