Explosion-proof Motor 55kW 75Hp

The Explosion-Proof Motor 55kW 75Hp is an electric motor product that acts to convert electrical energy into mechanical energy, helping to save energy. This motor has consistently led in sales for many years. Let’s explore the details of this product with Thanh Thai Motor!

Overview Design of the Explosion-Proof Motor 55kW 75Hp

This explosion-proof motor features an eye-catching gray/blue overall appearance. The motor housing is made of durable, sturdy cast iron material.

Therefore, it has excellent resistance in adverse environments, corrosive chemicals, high temperatures, or severe impact incidents.

In addition, the Explosion-Proof Motor 55kW 75Hp is trusted and used by everyone due to its explosion-proof capability in the event of electrical failures.

Internal Structure of the Explosion-Proof Motor 55kW 75Hp

To maintain the 55kW operating performance and ensure absolute safety in chemical and gas environments, the internal components of the motor must meet explosion-proof certification (Ex d):

• Stator: The stationary magnetic core is pressed from low-loss technical steel sheets. Pure copper windings are coated with thick insulation, multi-layer vacuum varnish impregnation (Class F or Class H) to withstand high temperatures and prevent short circuits and fires.
• Rotor: The solid cast squirrel-cage rotating core features a smooth surface machining and computerized dynamic balancing to completely eliminate mechanical friction causing sparks inside the machine chamber.
• Bearings: Assembled with heavy-duty bearings (SKF, NSK, FAG). The bearing system integrates multi-layer seals and non-flammable lubricating grease to prevent dust and gases from entering the shaft core.
• Cooling system: The centrifugal cooling fan must be made of anti-static plastic or specialized aluminum alloy to prevent sparking when rubbing against the air.

What Types of Explosion-Proof Electric Motors 55kW 75Hp Are Available?

The explosion-proof motor 55kW 75Hp product line is manufactured with 4 rotational speed segments, ensuring precise compatibility with the drive characteristics of heavy industrial machinery. Below are the standard technical specifications:

Explosion-Proof Motor 55kW 75Hp 2-Pole (2,800 – 3,000 rpm)

It is the segment providing the highest rotational speed, specialized for equipment requiring massive fluid or gas flow and pressure in a short time.

Model	250M
Shaft diameter	60mm
Keyway	18mm
Flange diameter	550mm
Weight	410kg
Dimensions	910 x 485 x 615 mm
Mounting style	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Explosion-Proof Motor 55kW 75Hp 4-Pole (1,400 – 1,500 rpm)

It is the standard and most popular motor line, providing a perfect balance between smooth rotational speed and powerful torque, ensuring durable operation.

Model	250M
Shaft diameter	65mm
Keyway	18mm
Flange diameter	550mm
Weight	430kg
Dimensions	910 x 485 x 615 mm
Mounting style	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Industrial compressed air: Runs screw air compressor stations supplying air to the entire production workshop for defense equipment and chemicals.
• Mining ore conveyors: Drives steel-cord rubber conveyor belt systems transporting coal and iron ore from mining areas to collection yards.
• Sawdust grinders: Applied in environments with high dust explosion risks in large-scale wood pellet manufacturing plants.

Explosion-Proof Motor 55kW 75Hp 6-Pole (900 – 1,000 rpm)

Built with a larger frame to accommodate multi-pole copper windings, generating extremely tremendous torque, specialized for carrying heavy continuous sluggish loads.

Model	280M
Shaft diameter	75mm
Keyway	20mm
Flange diameter	550mm
Weight	580kg
Dimensions	1050 x 550 x 700 mm
Mounting style	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Chemical tank agitation systems: Provides powerful kinetic energy to stir reaction tanks for solvents, industrial paints, and large-capacity thick chemical adhesives.
• Bucket elevators, ore mining chain conveyors: Pulls stone and ore elevator systems in damp mines with high flammable gas content.
• Ball mills: Operates coal milling drums and raw material grinding mills requiring continuous pulling force without rpm drop.

Explosion-Proof Motor 55kW 75Hp 8-Pole (700 – 750 rpm)

Ultra-slow rotational speed, fully converting 55kW into maximum initial twisting force. The machine housing is designed to be the largest (frame 315) to safely handle loads.

Model	315S
Shaft diameter	75mm
Keyway	20mm
Flange diameter	550mm
Weight	580kg
Dimensions	1050 x 550 x 700 mm
Mounting style	Foot mount (B3), Flange mount (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Winches, high-safety cranes: Applied for offshore drilling rig anchor winches, gantry cranes in warehouses containing weapons, explosives, or hazardous materials.
• Mechanical pressing and stamping machines: Drives scrap metal presses, sheet metal rolling machines in chemical environments requiring slow rpm and ultra-large pressing force.
• Drying drums, rotary kilns: Operates chemical drying furnaces, waste processing rotary drums requiring extremely slow movement and absolute absence of electrical sparks.

Which Gearbox Does the Explosion-Proof Motor 55kW 75Hp Combine With?

Pairing the 55kW explosion-proof motor with drive equipment requires extremely strict safety factor calculations to ensure the gearbox does not break under the pulling force of the 75Hp motor.

• Heavy duty gearbox (Large R, K, F series): This is the standard option. Giant gearbox codes such as R107, R137 or K107, K127 fully immersed in oil are often used to pull mine conveyors.
• Planetary gearbox: A perfect combination for explosion-proof hoisting mechanisms and hoists thanks to its ultra-large twisting force tolerance in a compact size.
• Drive coupling: It is mandatory to use hydraulic couplings or ATEX explosion-proof standard steel disc couplings for smooth starting, eliminating mechanical load shock and preventing spark generation due to friction.

Guide on How to Wire the Explosion-Proof Motor

To ensure the practical process is safe and accurate, you should first refer to electric motor videos to clearly understand the structure as well as the operating principle of the explosion-proof motor.

Step 1: Check initial parameters

In electric motor videos, the introduction usually provides full technical specifications of the explosion-proof motor. Understanding this information helps you choose the appropriate connection method before execution.

Step 2: Remove the terminal box cover

Use specialized tools to remove the fixing bolts and open the terminal box cover. This is a characteristic area of the explosion-proof motor, usually marked with “EX” to help identify the equipment.

Step 3: Identify the contact terminals

After opening the cover, the copper wiring terminals will be exposed inside. Observe carefully and accurately identify the 3 terminals marked U, V, W to prepare for power supply.

Step 4: Proceed with electrical wiring connections

Prepare 3 power wires and connect them sequentially to terminals U, V, and W. Ensure contact points are tightly secured to limit electrical spark generation during operation.

Step 5: Completion and further reference

After completing the basic wiring, you can learn more advanced methods through the technical instruction summary video from Thanh Thai Motor, helping to improve skills and ensure safe operation for various motor lines.

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

With powerful capacity and superior explosion-proof capability, the Explosion-Proof Motor 55kW 75Hp is an ideal choice for gear motor systems in hazardous environments. The product not only ensures safety but also brings durable operating efficiency. For detailed consultation and genuine purchase, please contact Thanh Thai Motor immediately.