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How to calculate the torque of a gearmotor?
Alternatively, if we have already selected our gearmotor, it becomes a case of re-arranging the torque equation to find out either the maximum load, the motor can lift or the radius for the pulley. For our spanner, we showed that In the case of our pulley, the force exerted is due to the mass being accelerated by gravity:
How can an electric motor lift a heavy weight?
1 Answer. The rate at which your motor can lift the weight depends on its power. The torque of the motor can be increased or decreased by running it through a gearbox, so in principle you could lift as big a weight as you want as long as you use a very low gear (and therefore lift the weight slowly).
What kind of thing can a motor lift?
$\\begingroup$ A motor can’t lift anything. A motor applies torque to a rotating shaft. The thing that you are asking about is called a winch. That is, a rotating drum that pulls on a rope that is wound around it.
Is the drum shaft hp the same as the base speed?
One other thing, the drum shaft hp will only match the motor nameplate hp if the shaft speed matches the base speed of the motor. Otherwise, you will need a gearbox or equivalent or, if on a VFD and direct drive, the motor hp will be the constant speed torque times the motor base speed.
What’s the gear ratio for a DC motor?
Your not likely to get a suitable motor with peak power and efficiency at 5.7 Hz (342 RPM). You’ll probably end up with a 5x to 10x gear ratio, depending on the best available motor you find. For example, let’s say you’ve decided you need a 10 kW motor.
How much torque does a micro spur gearmotor have?
We need to find a gearmotor that can support at least this much torque. You can search through our selection of DC geared motors. So for our required torque, there are several motors which will be able to do the job, such as the 215-400 Micro Spur 16mm DC Gearmotor – 38mm type , which has a rated torque of 150mNm.
What’s the maximum speed a DC motor can move?
Applying that to a 20% grade, for example, it can move along at 5x that, or 730 mm/s, or 1.63 MPH. In reality there will be friction and other losses, so probably not more than 500 mm/s = 1.1 MPH. You should start with power as described above.