DC Motor Specification description with Meaning and Examples

DC Motor Specifications description

DC motors for robotics come in a variety of shapes and sizes. Geared and non-geared motors are the two most frequent types. Geared motors, in simple terms, feature a gear mechanism that reduces motor speed while increasing torque. As a result, some common RPM values I encounter are 60 RPM, 100 RPM, 150 RPM, 200 RPM, and so on.

The other motor is a straightforward non-geared unit. The motor is just running at maximum speed at the rated voltage and current.

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Regardless of the variant, when you have a DC motor, you must consider the following specifications while powering the motor:

Parameter	Meaning	Example
Voltage Rating	The voltage range in which the motor is intended to run. You can choose a voltage value within the range that best matches your needs.	3 – 12 volts That is, the motor can be supplied by a voltage source ranging from 3 to 12 volts. As a result, 4.2V, 7.6V, and 9.6V are all permissible voltages.
No Load Current	The current drawn by the motor when it is not linked to the shaft and is operating free. (For small motors, when the shaft is not yet linked to the wheels, propellers, or other components.) This is the minimum current that the power supply must be able to supply for the motor to turn.	50 milliamperes This is a single value that represents the minimum current requirement.
Stall Current	When the load on the motor shaft is increased, the motor shaft will eventually stop turning. This is referred to as a motor stall. The stall current is the current drawn by the motor in this state. Please note that this is also the maximum current that the motor will require.	300 milliamperes This is a single value showing the source's maximum needed current.
power	This is usually expressed as “Watts.” I've noticed that the watt rating isn't provided in a lot of cases. As long as we have the voltage and current ratings, this should not be an issue. Power = Voltage x Current is a simple formula that may be used to calculate the power rating. Thus, a motor run at 5V with a current flow of 100mA theoretically produces 0.5Watts of power (or, for a resistance, 0.5Watts). This is the power that is dissipated as heat.) Alternatively, the power given is 0.5 Joules per second.	1 Watt of power This is a single value, or a value indicating the maximum power, at the stated voltage and current rating.
Torque	This shows how much weight the motor can raise over a certain distance. If the rating is 1Kgcm, it means that you can attach a maximum of 1Kg load 1 cm from the shaft and the motor will raise it.	1 kilogram per square meter A single digit. More on this under the section on calculations and maths.