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Forums
Engineering
General Engineering
Hydraulic Motor & Constant Torque
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[QUOTE="Averagesupernova, post: 5448245, member: 7949"] I don't think it is typical at all to use an accumulator in a hydraulic motor circuit. Hydrostatic drive systems consist of a variable displacement pump and a hydraulic motor that is [I]sometimes[/I] a variable displacement unit. Skid steer loaders that have 2 speeds will sometimes switch to a smaller displacement by changing the position of the swash plate in the motors. But that is pretty much it, at least in terms of main components. - In your case, you can't have constant pressure and constant speed unless the load is fixed. If you want a fixed speed out of the motor you need a constant specific flow. If the load changes, the pressure will change. You cannot really have it any other way and I don't know why you would need to in a hydraulic motor circuit. Think of it this way: Replace the hydraulic motor with an imaginary orifice in which you can vary the size. Small orifice represents large mechanical load on the motor. Large orifice represents a small mechanical load on the hydraulic motor. Hook this to a positive displacement pump turning at a specific RPM. What do you think will happen? [/QUOTE]
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Hydraulic Motor & Constant Torque
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