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Electric motors

Electric motors provide reliable and efficient drive for pumps, fans, conveyor belts and industrial machines. Order electric motors from WEG, RAEL and CEMER with power ratings from 0.06 to 500 kW, both for new installations and to replace existing motors. Our range includes asynchronous rotary-impulse motors, single-phase motors, braking motors, drum motors and ATEX versions. Energy-efficient electric motors in efficiency classes IE3 and IE4 are also available, with choices of different power ratings, speeds and configurations. Do you want to outsource the installation? Jumatra takes care of the complete installation of your electric motor.

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Which electric motor is suitable for your application?

At Jumatra you will find electric motors from 0.06 to 500 kW, including models from WEG, CEMER and RAEL. You select the correct electric motor based on power, speed, efficiency class and construction type. Are you replacing an existing motor? Then check the type plate and also compare the power supply voltage, mounting dimensions and shaft diameter. This will prevent a new motor from being mechanically or electrically incompatible.

Choose an IE2, IE3 or IE4 electric motor?

The energy efficiency class determines in part how much electricity your motor consumes. IE2 electric motors have a lower efficiency than comparable IE3 and IE4 motors. IE3 motors offer a higher efficiency, while IE4 motors are even more energy-efficient. Especially with long-term use, a higher efficiency class can reduce energy costs. When choosing, also take into account the applicable European efficiency requirements.

Pay attention to the speed and design of the construction

In addition to power, speed is also crucial for the drive system. At a mains frequency of 50 Hz, two-pole motors typically run at around 3,000 RPM and four-pole motors at around 1,500 RPM, depending on load and motor slip. Additionally, check the construction: B3 for foot mounting, B5 for flange mounting and B14 for a smaller flange connection. B35 combines foot and flange mounting.

Combining the electric motor with other drive components

Do you want to control the speed variable? Then combine your electric motor with a suitable one. frequency drive and matching motor cable For applications where the drive has to be held or braked, you will also find brake motors.

What power does your electric motor need?

The required power of an electric motor is expressed in kilowatts (kW) and depends on the load, the speed and the required torque. For lighter applications, such as small fans and conveyor belts, a electric motor up to 5.5 kW Suitable for heavier drives, such as industrial pumps and machines, you can look at motors up to 11 kW or electric motors up to 22 kW. The correct power always depends on the specific application. Choose an engine with sufficient power for the load, but avoid unnecessary overdimensioning. This ensures a reliable and energy-efficient drive.

Ordering electric motors from Jumatra

Friday is WEG System Integrator & Dealer and helps you select the appropriate electric motor. Compare the technical specifications, order easily online, or request expert advice when replacing an existing drive. Rush deliveries are also available.

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Explanation: Power

When we talk about the power of an electric motor We mean the amount of power that the engine can deliver. We usually express that in kilowatt (kW) or in horsepower (HP or pk). Kilowatt is the modern metric unit that is mainly used in Europe. Horsepower is an older term that you still often see, for example in cars or American machines.

One kilowatt equals 1000 watts, And if you convert that to horsepower, then 1 kW corresponds to about 1.34 hp. Conversely, 1 hp is approximately 0.75 kW. So a 2 kW motor produces about 2.7 hp of power. The higher the power, the more powerful the engine is. A 5 kW motor can therefore handle heavier tasks than a 2 kW motor.

In practice, this means that an electric bike, for example, has an engine of about 0.25 kW, which is enough to support someone smoothly while cycling. An electric car like a Tesla, on the other hand, often has an engine of more than 150 kW, which allows for high speeds and rapid acceleration.

In short: kW and hp are two ways of measuring the same thing: the amount of power an electric motor produces. If you want to know what power you need, it depends on what you want to drive with it.

Explanation: RPM

RPM stands for Revolutions Per Minute, that is to say, the number Revolutions that a electric motor per minute makes. In Dutch, this is also called the rotational speed.

The RPM indicates How quickly the as of the electric motor turns. For example, an engine with a speed of 1500 RPM makes approximately 1500 complete revolutions per minute.

The speed of an electric motor is mainly determined by the number Poland and the net frequency. With a standard mains frequency of 50 Hz, the most common rotational speeds are approximately:

2-pole: 3000 RPM
4-pole: 1500 RPM
6-pole: 1000 RPM
8-pole: 750 RPM

In practice, the actual engine speed is slightly lower due to slippage in the engine. That’s why you often see values like 2850 RPM, 1450 RPM, 960 RPM, or 710 RPM on type plates.

The correct RPM is important because each application has its own requirements. specific turning speed required. Pumps, fans, conveyor belts and machines operate optimally within a determined gear range. A too high speed can lead to excessive wear or incorrect operation, while a low engine speed insufficient capacity or can generate power.

In short, RPM indicates How quickly one electric motor turns and is one of the most important specifications when choosing the right electric motor for a particular application.

Explanation: Material

It material of an electric motor largely determines the strength, durability and heat dissipation of the motor. The housing of electric motors is usually made of cast iron or aluminum.

Engines with a cast iron housing It is extra strong, vibration-resistant, and suitable for Heavy industrial applications. This type of motor is often used in environments where reliability and robustness are essential.

Engines with a aluminum housing on the contrary, he is lighter of weight and have a good heat dissipation. This makes them suitable for applications where a compact and Efficient solution is desired.

In short, the material of the housing determines how well the motor works. file is against tax, environment and temperature, and which applications are most suitable.

Explanation: Phases

The number phases indicates on which electric motor Electrical connection the motor works. The most common variants are 1-phase and 3-phase motorcycles.

A 1-phase motor Works on a standard 230V connection and is mainly used in smaller applications, such as household appliances or light machines. These motors are easy to connect, but generally provide less power and torque.

A 3-phase motor works on a 400V Power current connection and is used for heavier and industrial Applications. These motors run more efficiently, deliver higher and more consistent torque and have better performance when used over long periods.

Sometimes it is also mentioned 2-phases, However, this hardly ever happens in practice. Usually, this involves a 1-phase motor with an additional winding (capacitor) or the use of two phases within a 3-phase connection.

In short, the number of phases determines the power, efficiency and application possibilities of the electric motor.

Explanation: Building form

The building form indicates from an electric motor How the motor is mounted becomes and in which position it can be placed. This determines how the motor is installed in an installation.

Common building forms include, for example B3, B5 and B35/B14. One B3 The motor has feet and is mounted on a flat surface. One B5 The motor has a flange on the front, which allows the motor to be connected directly to a machine. B35 The motor combines both, so feet and a flange, This provides additional flexibility during installation.

Choosing the correct configuration is important to ensure that the motor fits correctly into the application and stable assembled can be.

In short, the configuration determines how and where the electric motor is mounted and used within an installation.

Requesting a quote from Jumatra

Requesting quotes for your materials? You can request a quote in two ways:

  1. Offer based on your shopping cart
    Add the desired products to your shopping cart and proceed through the ordering process. Fill in your details and shipping information. In the final step, choose Request a quote instead of ordering directly.

  2. Request a quote free of obligation via the form
    Don't have a concrete product selection yet or would you like to discuss installation or custom-made solutions first? Then fill out the quote form. We will then contact you.
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Explanation: Poland

It number of poles of an electric motor determines how fast the motor rotates and how much force (torque) This delivers power. In the motor, a magnetic field is generated with multiple north and south poles. How more poles the motor has, how It's going slower now.

At a standard network frequency of 50 Hz Does this mean that a 2-pole motor approximately 3000 revolutions per minute creates, while a 4-pole motor around the 1500 rpm turns and a 8-pole motor approximately 1000 rpm achieves.

In addition to speed, the number of poles also has an effect on couple. Engines with more poles deliver more power strength and are suitable for applications where lower speed and higher torque are desired. Motors with fewer poles rotate faster and are often used in situations where speed It is more important than strength.

In short, it determines Number of poles balances the speed and power of the electric motor.