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AC vs. DC Electric Motors – Which Ones Are Best?


We always compare and contrast AC electric motors and DC electric motors to determine which one is best. But the answer is not always a clear one, and a lot of times, the one that is the best depends on the type of job you need the electric motor to perform. Fundamental Differences Between an AC Electric Motor and a DC Electric Motor Both AC and DC electric motors use the same principle of using an armature winding and magnetic field to generate power. In a DC electric motor, the armature rotates, and the magnetic field does not rotate. In an AC electric motor, the armature does not rotate,


4 Ways to Extend the Life of Your Electric Motor


Electric motors are some of the most expensive assets industrial companies have. They also need to keep running to keep production rolling along, so unplanned work stoppages must be avoided if at all possible. Following these four tips are simple ways to extend your electric motor's life and avoid expensive repairs. 1 – Inspect the Motor Frequently A quick visual inspection can reveal some essential details about the electric motor. Are there any signs of excess dirt or corrosion on any of the components? Look at the relays and contacts to make sure that they are dirt and rust-free. Do any


8 Reasons Electric Motors Are Superior to Internal Combustion Engines


Electric motors have been around for over 170 years, but they have not made a significant dent in the demand for the internal combustion engine (ICE) market. That is until now. Here are eight reasons why electric motors are superior to internal combustion engines. 1 – Electric Motors Are Simpler Electric motors do not have as many moving parts as an ICE motor. Because combustion is far more complicated than the processes that make an electric motor work, ICE motors have many more working parts to get it and keep it running. 2 – Electric Motors Generate Less Excess Heat Internal combust


The History of Electric Motors – Part 2


If you missed last month’s article The History of Electric Motors – Part 1, check it out. The First Practical DC Electric Motors Although William Sturgeon invented the first DC motor that provided enough power to drive machinery, it wasn’t until 1886 that Frank Julian Sprague invented the first DC motor that could run at a constant speed under variable weight. This motor paved the way for broad acceptance and use of electric motors for industrial applications. Sprague continued to champion the DC electric motor's acceptance by inventing technology that improved the electric grid


Common Causes of Balancing Issues – Requiring Dynamic Balancing


When electrical motors are out of balance, bad things happen. Unbalance happens when the rotor mass is not at the center of rotation, and this can lead to problems such as inefficient operation, unplanned downtime, and equipment breakdown. But what are some of the factors that cause balancing issues? Wear & Tear Daily operation, especially for electric motors with a lot of use, leads to wear and tear. And wear is never neat and even. It always is rough and uneven, which leads to imbalance. Corrosion & Dirt Build Up If a component attached to the electric motor gets corroded or


The History of Electric Motors – Part 1


The electric motor has been around for a long time. A lot longer than many people might be aware of, with many discoveries leading to other breakthroughs. Early Beginnings of Electric Motors It started with electrostatic devices that used a sulfur ball and a glass cylinder to create friction. A Scottish Benedictine Monk named Andrew Gordon and Benjamin Franklin used this method to create a “frictional machine” in the 1740’s. And not a lot of progress was made for almost a century until Hans Christian Ørsted, a Danish physicist and chemist, discovered the relationship between elect


The Benefits of Testing an Industrial Pump Repair with a Closed Loop Test Tank


The success of repairing industrial pumps offsite is sometimes a guessing game. There rarely is a way to test the effectiveness of your pump repair other than by installing it back into the system. If the pump isn’t fixed right the first time, you now have a bigger problem on your hands. So how do you make sure that an industrial submersible pump repair is done right? Tekwell Services has a solution. What is a Closed-Loop Water Tank? A closed-loop water tank is a huge water tank that is 6’ by 6’ by 8’ and holds over 2000 gallons that Tekwell’s engineers constructed to measure an in


What Are the Differences Between Yaskawa AC Electric Motors?


Yaskawa has a reputation for building solid AC motors, but they have several different types available on the market right now. There are many similarities, such as they all have a 3-year warranty, all are three-phase motors, all use ball bearings (except for a few notable differences), and all are UL Recognized, CSA Certified. But what are some of the differences? MicroMAX The MicroMAX inverter duty motors range from 1/8 to 10 HP at 1800RPM and appear in two different enclosures, the TEFC –for 20:1 constant torque and the TENV–for 1000:1 constant torque. This product line is desig


How Does an Ultrasonic Cleaner Work?


Ultrasonic cleaners have been around since the 1950s, and smaller versions have appeared in home appliances since 1970, but how does an industrial ultrasonic cleaner work? All types of ultrasonic cleaners use cavitation bubbles—bubbles created by rapid changes of pressure in a liquid–to clean parts with lots of crevices and complex shapes within them. Why Ultrasonic Cleaners Are Popular Ultrasonic cleaners are popular for a couple of reasons: They are less destructive than other methods for cleaning electric motor parts. Pumps, sprayers, and agitators may be damaging to del


7 Often Overlooked Factors to Consider Before Purchasing a New Electric Motor


There are many factors to consider before purchasing a new electric motor. Typically, you look at things such as voltage, speed, torque, and operating costs, but what are some of the lesser-known factors to take into consideration before purchasing a new electric motor? 1 – Power Needed One of the most important factors to consider is the amount of power needed to run the applications this motor has been selected for. Get a motor that is too small, it gets overworked and the stress this creates decreases the motor lifespan overall. On the flip-side, if you buy a motor that is much too big