This tiny DC motor has a shaft with an offset mass that vibrates when it rotates. Motors like this are commonly found in cell phones and other devices that use vibration for tactile feedback. The motor has 1.5″ leads and is encased in a removable rubber sleeve that gives it flat surfaces for mounting and prevents it from chattering against whatever it is...
A vibration motor! This itty-bitty, shaftless vibratory motor is perfect for non-audible indicators. Use in any number of applications to indicate to the wearer when a status has changed. All moving parts are protected within the housing.
These are standard '130 size' DC hobby motors. They come with a wider operating range than most toy motors: from 4.5 to 9VDC instead of 1.5-4.5V. This range makes them perfect for controlling with an Adafruit Motor Shield, or with an Arduino where you are more likely to have 5 or 9V available than a high current 3V setting.
This gearmotor is a compact (1.50" x 0.59" x 0.47") brushed DC motor with 35:1 metal gearbox. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft that matches the micro metal gearmotor output shafts.Key specs at 6 V: 350 RPM and 70 mA free-run, 20 oz-in (1.4 kg-cm) and 1.5 A stall.
This cylindrical, 2.05" x 0.98" x 0.98" gearmotor uses a brushed DC motor with extra-strong magnets and a 34.014:1 metal gearbox to deliver a lot of power in a relatively small package. These units have a 0.315"-long, 4 mm-diameter D-shaped output shaft.
This metal gearmotor is a compact (1.16" x 0.61" x 0.61") brushed DC motor with an enclosed 35:1 metal gearbox. These units have a 0.365"-long, 3 mm-diameter D-shaped output shaft.