Because repairing instead of throwing away is becoming increasingly important in our consumption patterns, we're highlighting this video featuring Juliette and Loïc, a couple from Brittany with a passion for nature and mechanics. through their channel, they share various tutorials where they demonstrate how to repair everyday objects. In this article, they guide us through the repair of a sander.

In a quick and simple tutorial, they explain how to replace the bearings and change the stabilizer washer.

• Problem to solve :

The sander rotor no longer turns, the motor is blocked.

• Types of bearings used in the video :

The bearings chosen for this demonstration are ZZ type.
note that 2RS bearings are dust- and water-tight, but offer a less fluid rotation. This is why ZZ bearings are preferred for this type of tool.

• Reasons for choosing this type of bearing for a sander :

The specific characteristics of a ZZ-type bearing lie in its metal deflectors positioned on either side. This type of bearing can withstand temperatures of up to 90 degrees, whereas a conventional 2RS bearing can withstand between 110 and 120 degrees. However, the grease inside the bearing struggles to withstand these high temperatures, leading to premature liquefaction. With less friction, it allows faster rotation. Thanks to its metal flanges, it prevents dust from penetrating as easily as in other types of bearing, thus extending its service life.

Note: The use of a hammer or mallet for assembly is not recommended.

The bearings shown in the video are available on our website: 123roulement.com