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Alternators

An alternator is a machine which converts mechanical energy into electric energy. It does this in the form of an electrical current. In essence, an AC electrical generator can be labeled an alternator. The word usually refers to a rotating, small device driven by automotive and various internal combustion engines. Alternators which are placed in power stations and are driven by steam turbines are actually called turbo-alternators. The majority of these machines use a rotating magnetic field but occasionally linear alternators are also used.

A current is generated inside the conductor when the magnetic field around the conductor changes. Generally the rotor, a rotating magnet, spins within a set of stationary conductors wound in coils. The coils are situated on an iron core called the stator. When the field cuts across the conductors, an induced electromagnetic field or EMF is generated as the mechanical input causes the rotor to revolve. This rotating magnetic field produces an AC voltage in the stator windings. Normally, there are 3 sets of stator windings. These physically offset so that the rotating magnetic field produces 3 phase currents, displaced by one-third of a period with respect to each other.

"Brushless" alternators - these make use of brushes and slip rings together with a rotor winding or a permanent magnet in order to induce a magnetic field of current. Brushlees AC generators are usually found in larger machines like industrial sized lifting equipment. A rotor magnetic field can be produced by a stationary field winding with moving poles in the rotor. Automotive alternators usually make use of a rotor winding that allows control of the voltage induced by the alternator. This is done by changing the current in the rotor field winding. Permanent magnet devices avoid the loss due to the magnetizing current within the rotor. These devices are restricted in size due to the price of the magnet material. As the permanent magnet field is constant, the terminal voltage varies directly with the generator speed.

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Forklift Parts

  • Brakes
    A brake drum is wherein the friction is provided by the brake shoes or brake pads. The shoes or pads press up against the rotating brake drum. There are a few various brake drums kinds along with certain specific differences. A "break drum" will ...
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  • Carriage Rollers
    Carriage rollers are specially designed bearings that are utilized on lift masts to be able to help them perform within tough environmental conditions. Lift masts are normally subjected to shocks, oscillations, high dynamic and vibrations and ...
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  • Carriages and Carriage Parts
    There are actually 4 sizes of hook type fork carriages rated by the blade carriage hoisting capability. Hook type tine carriages have been the same. Class I carriages are rated for cargo up to 2000 lbs. The carriage bar spacing for Class I is ...
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  • Control Valves
    Automatic control systems were primarily developed more than two thousand years ago. The ancient water clock of Ktesibios in Alexandria Egypt dating to the 3rd century B.C. is considered to be the first feedback control device on record. This ...
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  • Controllers
    Lift trucks are accessible in different load capacities and various units. The majority of forklifts in a regular warehouse surroundings have load capacities between one to five tons. Larger scale models are utilized for heavier loads, such as ...
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  • Differentials
    A mechanical device which can transmit torque and rotation via three shafts is known as a differential. Every now and then but not at all times the differential will utilize gears and would function in two ways: in automobiles, it provides two ...
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  • Drive Axles
    The piece of equipment that is elastically fastened to the framework of the vehicle utilizing a lift mast is called the forklift drive axle. The lift mast attaches to the drive axle and can be inclined, by at least one tilting cylinder, round the ...
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  • Drive Motors
    Motor Control Centers or likewise called MCC's, are an assembly of one enclosed section or more, that have a common power bus principally consisting of motor control units. They have been utilized since the 1950's by the vehicle business, in view ...
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