lantier motor Germany lantier model lantier price

lantier motor is a rotating motor containing a brush assembly that converts DC electrical energy into mechanical energy (DC motor) or converts mechanical energy into DC electrical energy (DC generator). Distinct from brushless DC motors, the brush assembly is used to introduce or extract DC voltage and DC current. DC brushed motors are the foundation of all motors; they feature fast starting, timely braking, smooth speed regulation over a wide range, and relatively simple control circuits.

lantier motor structure

The motor rotor consists of the rotor core, rotor winding, and shaft. The rotor core is also part of the motor's magnetic circuit and is made of stacked silicon steel sheets. Unlike stator core laminations, rotor core laminations have slots on the outer circumference; after stacking, the outer cylindrical surface of the rotor core uniformly forms many identical slots for placing the rotor winding. The rotor winding is another part of the induction motor circuit; its function is to cut the stator magnetic field, generate induced electromotive force and current, and be subjected to force under the action of the magnetic field to rotate the rotor. Its structure can be divided into two types: squirrel-cage winding and wound-rotor winding. The main characteristics of these two rotors are: squirrel-cage rotors have a simple structure, are easy to manufacture, economical and durable; wound-rotors have a complex structure and are expensive, but external resistance can be introduced into the rotor circuit to improve starting and speed regulation performance. The squirrel-cage rotor winding consists of conductor bars placed in the rotor slots and end rings at both ends. To save steel and increase productivity, the conductor bars and end rings of low-power induction motors are generally cast in one piece from molten aluminum; for high-power motors, since cast aluminum quality is difficult to guarantee, copper bars are commonly inserted into the rotor core slots, and end rings are welded on at both ends. The squirrel-cage rotor winding is self-closed and does not require an external power supply; its shape resembles a cage, hence the name squirrel-cage rotor.

lantier motor performance

The design of the motor spindle shaft end is also an issue that cannot be ignored for high-speed electric spindles. Bearings used in high-speed spindle units mainly include angular contact ball bearings, magnetic bearings, water-based hydrostatic/hydrodynamic bearings, and air hydrostatic/hydrodynamic bearings. Due to their high cost, complex control systems, and difficult-to-resolve heating issues, magnetic bearings are not yet widely applied in high-speed spindle units. Water-based hydrostatic bearings are a popular research topic in China; they utilize the high heat capacity of water and the smaller temperature rise of the bearing to partially solve the severe heating problem of ordinary hydrostatic/hydrodynamic bearings, and are mainly used in low-speed, heavy-load applications. Air hydrostatic/hydrodynamic bearings have low radial stiffness and impact, but offer good high-speed performance, and are generally used in ultra-high-speed, light-load, precision spindles. Angular contact ball bearings with dn values are applied in the following high-speed spindle units; they meet requirements well in terms of speed limit, load capacity, stiffness, and precision, are standardized, and are low-cost. Angular contact ball bearings can also improve performance through the following methods.

lantier motor applications

Motors are mainly used as electric motors. They are the most widely used and highest-demand type of motor in industrial and agricultural production and various sectors of the national economy. Metal cutting machine tools, steel rolling equipment, blowers, crushers, water pumps, oil pumps, light industrial machinery, textile machinery, mining machinery, etc., mostly use induction motors for drive. In daily life, the application of induction motors is also increasingly widespread; single-phase induction motors are used in household appliances such as electric fans, washing machines, refrigerators, and air conditioners. In electric drive systems, the vast majority of drive motors are induction motors, accounting for approximately 60% of the total grid load. The widespread application of induction motors is due to their advantages such as simple structure, ease of use, reliable operation, high efficiency, ease of manufacturing, and low cost. The speed regulation performance of induction motors themselves is poor; in applications requiring a wide and smooth speed regulation range, DC motors are generally used. In the past decade or two, AC speed regulation systems for induction motors, developed based on power electronic devices and microcomputers, have improved the speed regulation performance of induction motors, thus broadening their applications. During operation, induction motors must absorb reactive power from the grid, which worsens the grid's power factor. Since the grid's power factor can be compensated by other means, this does not hinder the widespread use of induction motors.

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