Explosion-proof Motor 18.5kW 25Hp

Explosion-proof Motor 18.5kW 25Hp is an electric motor used in easily explosive environments, such as chemical processing, fireworks manufacturing workshops, coal mining, etc. Thanks to its sturdy design, thick housing, ability to withstand high temperatures and other harsh operating environments.

Design appearance of the explosion-proof motor 18.5kW 25Hp

This equipment is actually a 3-phase electric motor, featuring a terminal box cover and a thick cast iron layer capable of withstanding very high temperatures up to 50 degrees Celsius, suitable for integration in explosive-prone applications. In addition, the housing is coated with electrostatic paint, along with IP55 protection class against dust and water jets from all directions, helping the explosion-proof electric motor operate durably with a long lifespan.

In addition, to help the explosion-proof motor operate efficiently and prevent explosions, it features an additional fan located behind the motor, protected by a fan cover. Regarding mounting types, the motor has two types: foot-mounted and flange-mounted, suitable for various installation conditions and meeting diverse consumer usage needs.

Structure of the explosion-proof motor 18.5kW 25Hp

To ensure absolute safety and maintain 18.5kW operating performance in hazardous areas, the internal components of the explosion-proof motor are strictly inspected according to explosion-proof standards (Ex):

• Stator: High-quality magnetic steel core block. Pure copper windings coated with a thicker insulation layer, vacuum-impregnated with high-grade high-temperature insulating varnish (Class F or Class H) to minimize the risk of overheating causing short circuits and fires.
• Rotor: Sturdy one-piece cast squirrel-cage rotor core, with a smooth surface finish and precise dynamic balancing to avoid any friction generating mechanical sparks inside the motor chamber.
• Bearings: Uses high-load industrial bearing series with explosion-proof lubricating grease. The bearings are designed with multi-layer sealing mechanisms to prevent combustible dust from entering the rotating shaft.
• Cooling system: The cooling fan must be made of anti-static plastic or special aluminum alloy that does not generate sparks when accidentally colliding with the rear steel fan guard.

What types of explosion-proof electric motors 18.5kW 25Hp are available?

The explosion-proof motor 18.5kW 25Hp product line is manufactured with 4 different rotational speed segments, helping system designers easily select equipment suitable for the drive characteristics of each type of machinery in chemical and mining environments. Below are the standard specifications:

Explosion-proof motor 18.5kW 25Hp 2 poles (2,800 – 3,000 rpm)

This segment provides the highest rotational speed, specialized for equipment requiring large air volume or strong fluid pressure in flammable environments.

Model	160L
Shaft diameter	42mm
Keyway	12mm
Flange diameter	350mm
Weight	155kg
Dimensions	660 x 330 x 425 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Fuel pumping systems: Driving large-capacity centrifugal chemical pumps, internal fuel pumping stations, aviation fuel filling terminals, liquefied petroleum gas (LPG) transfer stations.
• Explosion-proof ventilation: Operating gas exhaust fans, large-capacity industrial ventilation fans for coal mining tunnels with high Methane (CH4) gas concentration, toxic gas exhaust fans in Zone 1 and Zone 2 areas.
• Cooling and dust collection: Used for large-scale electrostatic dust collection systems in paint shops and industrial woodworking shops where the risk of fine dust explosion is extremely high.

Explosion-proof motor 18.5kW 25Hp 4 poles (1,400 – 1,500 rpm)

As a standard motor line, possessing a balance between speed and pulling force, the machine operates quietly and generates low heat in enclosed environments.

Model	180M
Shaft diameter	48mm
Keyway	14mm
Flange diameter	350mm
Weight	190kg
Dimensions	730 x 380 x 475 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Pneumatic & Hydraulic equipment: Driving explosion-proof air compressors deep in ore mining tunnels, running hydraulic power packs to operate equipment on offshore oil and gas rigs.
• Conveyor systems: Powering coal conveyor systems, feeding conveyors at thermal power plants, and coal powder grinding stations.
• Chemical mixing: Operating solvent mixers for industrial paint production, kneading machines for dye chemicals and industrial explosives.
• Dust explosion environments: Assembled for food processing machinery lines with high dust explosion risks such as flour grinding stations, grain silos, milk powder, and refined sugar.

Explosion-proof motor 18.5kW 25Hp 6 poles (900 – 1,000 rpm)

With a slow rotational speed, the 6-pole series generates very high torque, specialized for heavy-duty machinery systems working continuously in hazardous areas.

Model	200L
Shaft diameter	55mm
Keyway	16mm
Flange diameter	400mm
Weight	265kg
Dimensions	800 x 420 x 535 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• Heavy-duty mixers: Operating thick chemical solution mixers, industrial glue kneading machines, composite plastics, and rubber in chemical workshops.
• Mineral conveying: Driving bucket elevator systems and scraper chain conveyors in deep ore mines, mud-thickened and high-humidity environments.
• Inclined conveyors: Running heavy-load inclined conveyors in textile dyeing plants and paper manufacturing workshops (where frequently exposed to corrosive chemicals and flammable solvents).
• Petrochemical environmental treatment: Driving bottom sludge suction pumps and tank circulation pumps at wastewater treatment stations of oil refineries.

Explosion-proof motor 18.5kW 25Hp 8 poles (700 – 750 rpm)

The extremely slow rotational speed helps convert the entire 18.5kW power into initial twisting force. The cast motor housing is extremely thick to safely handle loads.

Model	225S
Shaft diameter	60mm
Keyway	19mm
Flange diameter	450mm
Weight	310kg
Dimensions	850 x 470 x 590 mm
Mounting type	Foot-mounted (B3), Flange-mounted (B35, B5, B14)
Protection class	IP55
Insulation class	Class F

Practical applications:

• High safety lifting: Applied for high-intensity cable winches in tunnels, rig anchor winches, explosion-proof overhead cranes in warehouses storing explosive materials and fireworks.
• Super heavy-duty machinery: Operating heavy-duty mechanical machinery requiring slow rotation such as roller crushers and hammer mills in flammable material production workshops, and industrial waste shredders.
• Heat agitation: Installed for flammable solid fuel mixing rotary tank systems, rotary drying kilns treating hazardous chemical waste requiring ultra-slow movement and no spark generation.

Which gearbox does the explosion-proof motor 18.5kW 25Hp combine with?

To safely transmit pulling force from the 18.5kW explosion-proof motor to load mechanisms, selecting a gearbox must strictly comply with mechanical durability requirements and especially must not generate sparks due to friction during transmission.

• Heavy-duty gearbox (R, S, K, F series): This is the safest connection method. The gears are completely immersed in lubricating grease/oil. Commonly use size R87, R97 or K87, K97 to drive coal mine conveyors.
• Hollow shaft / worm gearbox: If using a worm-type gearbox (such as heavy-duty cast iron WPS, WPX series), it is necessary to ensure an adequate cooling oil system to avoid excessive heat generation at the gearbox housing.
• Drive couplings: It is recommended to use ATEX standard heavy-duty shaft couplings, hydraulic couplings, or anti-static belts to eliminate electrical sparks caused by belt transmission friction.

Guide on wiring for explosion-proof motors

For the practical process to be as safe and accurate as possible, please refer to the detailed notes for each wiring operation summarized below:

Step 1: Check initial specifications:

At the beginning of the electric motor video, the instructor introduces details about the explosion-proof motor so viewers can clearly grasp the technical specifications before starting.

Step 2: Remove the terminal box cover:

Use specialized tools to loosen the bolts and remove the terminal box cover (the cover with the distinctive red “EX” lettering).

Step 3: Identify the contact terminals:

After opening the cover, you will see copper terminal studs exposed inside. It is necessary to observe and accurately identify the 3 terminals labeled U, V, and W to prepare for the power supply connection step.

Step 4: Proceed with wiring connection:

Use 3 power cords (illustrated in the video with alligator clips having red, yellow, and blue wire cores) to clip onto the 3 terminals U, V, and W identified in the previous step.

Step 5: Completion and further reference:

Complete the basic wiring process. To see more complex wiring methods or learn about other machine lines, you can watch technical guidance summary videos on Thanh Thai Motor’s channel.

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