I am working on cramp massager and need the vibration motor for that so help me in identifying it
Hello devsinghal45, welcome to the TechForum! We do have a pretty decent selection of motors that are specifically designed for vibration. They all use different voltages and methods for vibration. See this full list here.
Piezo is a vibrating crystal type. ERM stands for Eccentric Rotating Mass, and these can be pretty effective for that application because it’s more dispersed. The next type is LRA which stands for Linear Resonant Actuator which is more directional. Keep in mind that these are typically for haptic feedback, so they aren’t always meant for high pressure applications. You can certainly try them, but they may quit working if too much pressure is applied as they aren’t very high torque.
Ideally, you’d want something both relatively high RPM and high torque for cramps, which can be difficult. Here is a modified version of the list with higher torque options. You do have to be more careful with higher torque motors too, too much could vibrate way too strong.