Miniature ball bearings are available ball bearings of quite small size. These miniature ball bearings have a 3mm inner diameter, a 8mm outer diameter, and a 4mm thickness. Ball bearings of this size are ideal for precision work and applications that require a lot of functional mechanical parts in a small space, such as 3D printer, quadcopter or model.
Material: Bearing steel
Inner Diameter: 3mm / 0.12″
Outer Diameter: 8mm / 0.31″
Thickness: 4mm / 0.15″
10 x Bearings
HIGH QUALITY: These mini bearings are made of high quality steel for low noise and long service life.
DOUBLE SHIELDED DESIGN: They are double rubber sealed to avoid contaminants entering and save lubricant.
SIZE: Bearings have a 3mm inner diameter, a 8mm outer diameter, and a 4mm thickness。
WIDELY APPLICATION: These are great for small hobby 3mm shaft/rod projects such as 3D printer, quadcopter or ship model.
10PCS: There are 10 pieces miniature bearings which you may use for many different projects.