elmot motors Germany elmot models elmot prices

elmot motors consist of the motor main body and a driver, representing a typical mechatronic product. A brushless motor is a motor without brushes and a commutator (or slip rings), also known as a commutator-less motor. As early as the nineteenth century, when motors were first invented, the practical motors produced were of the brushless type, namely AC squirrel-cage asynchronous motors, which were widely used. However, asynchronous motors have many insurmountable drawbacks, resulting in slow development of motor technology. In the mid-twentieth century, transistors were invented, leading to the emergence of DC brushless motors that use transistor commutation circuits to replace brushes and commutators. This new type of brushless motor is called an electronically commutated DC motor, which overcomes the drawbacks of the first generation of brushless motors.

elmot motor advantages

The motor can be installed integrally on the wheel axle to form an integrated direct-drive system, where each wheel axle serves as a drive unit, eliminating the need for a gearbox. Advantages of permanent magnet synchronous motors: high power efficiency and high power factor; low heat generation, resulting in a simple, compact, and low-noise cooling system; the system adopts a fully enclosed structure with no transmission gear wear, no transmission gear noise, and is free from lubricating oil and maintenance; permanent magnet synchronous motors allow high overload current, significantly improving reliability; the entire transmission system is lightweight, with lower unsprung weight than traditional wheel axle transmissions and higher power per unit weight; the absence of a gearbox allows flexible design of the bogie system, such as flexible bogies and single-axle bogies, greatly enhancing train dynamic performance. The use of permanent magnet poles, especially rare-earth permanent magnets (such as neodymium iron boron), provides high magnetic energy product and high air-gap flux density, resulting in smaller volume and lighter weight for the same capacity. The rotor has no copper or iron losses, nor friction losses from slip rings and brushes, ensuring high operating efficiency. Low moment of inertia allows high pulse torque, achieving high acceleration, good dynamic performance, compact structure, and reliable operation.

elmot motor applications

Motors are mainly used in digital control systems, offering high precision and reliable operation. If position detection and speed feedback are employed, closed-loop control can also be achieved. Stepper motors have been widely applied in digital control systems, such as in digital-to-analog conversion devices, CNC machine tools, computer peripheral equipment, automatic recorders, and clocks. They are also used in industrial automation production lines and printing equipment. A stepper motor is an open-loop control element that converts electrical pulse signals into angular or linear displacement. Under non-overload conditions, the motor's speed and stopping position depend only on the frequency and number of pulse signals, and are not affected by load changes; that is, each pulse signal applied to the motor causes it to rotate by one step angle. The existence of this linear relationship, combined with the fact that stepper motors have only periodic errors and no cumulative errors, makes control using stepper motors in fields such as speed and position very simple. Although stepper motors are widely used, they cannot be used under conventional conditions like ordinary DC or AC motors. They require a control system composed of dual-ring pulse signals, power drive circuits, etc., to operate. Therefore, proper use of stepper motors is not easy, as it involves extensive professional knowledge in mechanics, motors, electronics, and computers. Nowadays, there are indeed many manufacturers producing stepper motors, but very few have professional technical personnel capable of independent development and research. Most manufacturers have only ten to twenty employees and lack even the most basic equipment, remaining at a stage of blind imitation. This causes many troubles for users in product selection and usage. In view of the above situation, we have decided to take the widely used variable reluctance stepper motor as an example to describe its basic working principle, hoping to assist users in selection, usage, and overall machine improvement.

elmot motor service life

Motor life is related to various factors such as functional failures caused by insulation deterioration, wear of sliding parts, and bearing deterioration, with most depending on bearing condition. Bearing life includes two types: mechanical life and lubricant life. Bearing life is defined as follows: 1, lubricant life due to thermal deterioration, and 2, mechanical life due to operational fatigue. In most cases, heat has a greater impact on lubricant life than the load weight on the bearing affects mechanical life. Therefore, motor life is estimated based on lubricant life, with temperature being the most significant factor affecting lubricant life, as it substantially influences service duration.

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