There are three main factors to consider when selecting a DC electric motor: Speed, torque and voltage. Knowing these three specifications, it is possible to know which engine and manufacturer will be most appropriate for the desired need.
Shaft Speed: Shaft speed specifications generally refer to unloaded speed, which is the maximum speed the motor can reach when there is no torque applied. Since the speed depends on the voltage, the power supply must have an appropriate specification for the DC motor.
Output Torque: Rotation of the shaft generates a rotational force called torque (τ). Torque can be of two types: starting torque or continuous torque. The starting torque is the τ at which the shaft speed is zero or the motor is stopped. The continuous torque is the maximum τ under normal operating conditions. It is very important to observe the constancy of torque. It is proportional to velocity.
Available Voltage: DC motors 23064 CCK/W33 can be designed to operate at a specific voltage if required. However you should always observe the availability of suitable power supply for each application.