3-Phase Electric Motor 30kW 40Hp

The 3-Phase Electric Motor 30kW 40Hp is an ideal choice for industrial applications requiring high power and stable performance. With powerful operational capabilities, this motor is commonly used in equipment such as air compressors, industrial pumps, fans, conveyors, and automated production lines. Featuring a durable, energy-efficient, and easy-to-maintain design, the 3-phase electric motor delivers high efficiency, helping businesses increase productivity and minimize operating costs.

General design of the 3-Phase Electric Motor 30kW 40Hp

The 3-phase electric motor 30kW 40Hp falls into the over-3.7kW electric motor product segment, solidly designed with a monoblock structure, ensuring stable transmission and minimizing vibration throughout operation. With a reasonable size, the motor is easily installed in industrial spaces requiring large capacity.

In addition, the motor housing (electric motor housing) is made of anti-rust cast iron or aluminum materials, offering high load-bearing capacity and protecting internal components from environmental impacts. Equipped with a fan or water cooling system, this motor maintains optimal performance and has a long service life, suitable for demanding industrial applications.

Internal structure of the 3-Phase Electric Motor 30kW 40Hp

To meet the ability to work continuously at high intensity, the internal components of the 30kW 3-phase motor are all made from high-grade materials and thoroughly inspected:

• Stator: The stationary magnetic field block is pressed from thousands of low-loss electrical technical steel sheets. The winding system is wound with 100% pure copper of large cross-section, impregnated with multi-layer vacuum electrical insulation varnish to withstand high operating temperatures (Class F standard).
• Rotor: The monolithic cast squirrel-cage core integrates conductive bars made of pure copper or aluminum. The rotor is precisely computer dynamically balanced, helping the shaft rotate smoothly without center deviation at high speeds.
• Bearing (Ball bearing): The key load-bearing component, using high-grade industrial bearings (such as SKF, NSK, FAG) to withstand radial loads. Bearing caps are usually equipped with grease nipples for periodic relubrication.
• Cooling system: Uses a large cross-section centrifugal cooling fan made of synthetic plastic or lightweight alloy, placed inside a sturdy steel guard cage behind the machine tail.

What types of 3-Phase Electric Motor 30kW 40Hp are available?

The 3-phase 30kW 40Hp machine line is divided into 4 speed segments to precisely meet the traction force and rpm requirements of each transmission system. Below are specific parameters and applications:

3-Phase Motor 30kW 40Hp 2 poles (2,800 – 3,000 rpm)

This is the high-speed prioritized segment, usually serving systems that need to generate large pressure or circulating flow.

Technical specifications:

Code	200L
Shaft diameter	55mm
Key	16
Flange diameter	400mm
Weight	240kg
Dimensions	770 x 420 x 505mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Water supply pump system: Pulls large-capacity centrifugal pump heads serving municipal clean water supply stations, fire protection (PCCC) pump stations for industrial zones and high-rise buildings.
• Environmental treatment system: Provides kinetic energy for industrial air blowers, oxygen aeration for large-scale wastewater treatment tanks.
• Industrial exhaust fan: Operates high-pressure centrifugal exhaust fans to extract smoke and fine dust in metallurgy, cement plants, or woodwork shops.

3-Phase Motor 30kW 40Hp 4 poles (1,400 – 1,500 rpm)

This is the most common line with an excellent balance between rotational speed and torque, smooth operation, and high mechanical durability.

Technical specifications:

Code	225S
Shaft diameter	55mm
Key	16
Flange diameter	400mm
Weight	260kg
Dimensions	770 x 420 x 505mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Compressor & hydraulic equipment: Pulls screw air compressor heads in automated manufacturing and textile factories; operates central hydraulic pump stations for plastic injection molding machines, punching machines.
• Conveyor system: Drives conveyor belts, flat conveyors transporting goods, ore, coal at seaports and mining sites.
• Forestry product processing: Operates wood chippers, shaving crushers in wood board manufacturing plants (MDF, plywood).
• High-tech agriculture: Applied in industrial rice milling lines, large-scale agricultural drying fans.

3-Phase Motor 30kW 40Hp 6 poles (900 – 1,000 rpm)

This motor line is enhanced with copper wire to create a slow-rotating magnetic field, generating huge pulling force (torque), specializing in continuous heavy-duty mechanisms.

Technical specifications:

Code	225M
Shaft diameter	60mm
Key	18mm
Flange diameter	450mm
Weight	280kg
Dimensions	845 x 470 x 560 mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Concrete & cement mixing stations: Provides strong pulling force, preventing speed drop when the mixing drum is loaded with stone/cement aggregates; pulls material bucket elevators to silos.
• Industrial crushers: Operates jaw crushers, cone crushers for stone breaking in mineral mining mines; pellet feed presses, sawdust pellet presses.
• Inclined conveyors: Used for heavy-duty inclined conveyor systems, transporting materials from underground mines to the ground.
• Chemical agitators: Operates agitator blades for chemical reaction tanks, viscous solution mixing tanks with capacities of thousands of liters without breaking the shaft.

3-Phase Motor 30kW 40Hp 8 poles (700 – 750 rpm)

Possessing an extremely slow rotational speed but the highest initial torque. The housing frame design is enlarged to ensure safe startup even under very heavy loads.

Technical specifications:

Code	250M
Shaft diameter	60mm
Key	18mm
Flange diameter	550mm
Weight	280kg
Dimensions	910 x 510 x 615 mm
Mounting type	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Heavy-duty lifting equipment: Installed for cranes, hoists, winches, gantry cranes at shipyards and seaports requiring absolute safe lifting of dozens of tons of steel coils/containers.
• Heavy load precision mechanics: Provides durable kinetic energy for stamping machines, hydraulic scrap metal presses, purlin steel rolling machines, industrial sheet metal rolling machines.
• Scrap shredders: Requires enormous torque at ultra-slow speeds to tear apart automobile tires, hard plastics, or construction waste.
• Ball mills: Applied to rotate giant ball mills in the cement manufacturing and clinker grinding industry.

What gearbox does the 3-Phase Electric Motor 30kW 40Hp combine with?

Pairing the 30kW motor with a gearbox (speed reducer) requires high precision regarding the Service Factor to fully transmit the enormous pulling force without breaking the shaft or chipping teeth.

• Heavy-duty helical gearbox (R, S, K, F series): This is the safest connection option. Large sizes such as R97, R107 or K97, K107 are usually used for industrial conveyor systems and bucket elevators.
• Large hollow shaft / worm gearbox: Can be combined with vertical worm gearboxes size 135, 155 used in industrial mixing tanks.
• Auxiliary transmission: It is recommended to use fluid couplings, gear couplings, or large C-pitch pulley systems (from 3 to 4 grooves) to eliminate mechanical shock loads and protect the motor shaft.

Instructions for wiring a 3-phase electric motor

Step 1: Open the electric motor terminal box

Use a suitable screwdriver to remove the 4 fixing bolts on the terminal box cover. Once opened, you will see the internal wiring terminals. For a common 3-phase electric motor, this area typically has 6 clearly labeled wire ends for wiring connection.

Step 2: Identify the terminal posts 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 location used to supply input power.

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

Prepare 3 phase wires from the 380V power source and connect them respectively to terminals U1, V1, W1. Ensure correct positioning for stable motor operation.

Important safety notes:

Crimp terminals must be tightened to ensure good electrical contact, avoiding electrical sparks causing short circuits and fires. Do not connect power to the top terminal row (U2, V2, W2) as this may damage the motor windings.

Step 4: Completion and trial run

After wiring, close the terminal box tightly and secure the bolts to protect the equipment from dust and moisture. Power on to check operation. If the motor rotates in reverse, simply disconnect power and swap the positions of any two of the three phase wires to reverse the rotation direction.

Proper wiring execution not only helps the system operate stably but also ensures long-term safety. Electric motor videos from Thanh Thai Motor will be a useful reference source for users during practice.

Additionally, you can access the video compilation in the electric motor video category to refer to more product introduction contents, quotations, and detailed instructions performed 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