687ZZ 7x14x5 Deep Groove Ball Bearing

Ball bearing type MR137. Deep groove ball bearings are a very popular type of rolling bearings used to achieve smooth rotation that is harmonious and very quiet.

Miniature bearings found in modeling engines are one of the most important elements of the drive unit. We owe them the high level of engine operation.

A bearing is a machine element used to seat shafts and axles in supports. This type of bearing consists of four basic elements:

Outer ring
Inner ring
Rolling element
Ball basket

It is worth checking the condition of the bearings in each engine, it is especially recommended to control the quality of engine operation in multicopters. A damaged bearing is a source of vibration, which can cause many problems with the model

Miniature bearings found in modeling engines are one of the most important elements of the drive unit. We owe them the high level of engine operation. The most common are deep groove roller bearings.

Technical data:

inner diameter (axle): 7 mm
outer diameter:  14 mm
width (thickness): 5 mm