When choosing bearings, people often encounter matching bearings that need to be purchased. So, what is bearing pairing? Today, PPH bearings will talk to you about bearing matching knowledge, hoping that PPH bearings can be helpful for your bearing selection.

CA, CB, CC - Universal paired single row angular contact ball bearings, can be installed in any (series, face-to-face or back-to-back) pairing. When arranged back-to-back or face-to-face, the internal clearance before axial installation is smaller (CA), normal (CB), and larger (CC) compared to the normal value.

-2F - The outer spherical ball bearing is equipped with dust slinging rings on both sides.

-2FF outer spherical ball bearing with combined dust slinging rings on both sides.

G - Universal paired single row angular contact ball bearing. When arranged face-to-face or back-to-back, there is a certain pre load inside the bearing before installation.

GA - When arranged face-to-face and back-to-back, there is a lighter preload inside the bearing.

GB -- When arranged face-to-face and back-to-back, there is a moderate preload inside the bearing.

Bearing is an important component in contemporary mechanical equipment. Its main function is to support mechanical rotating bodies, reduce their friction coefficient during motion, and ensure their rotational accuracy. According to the different friction properties of moving components, bearings can be divided into two categories: rolling bearings and sliding bearings. Rolling bearings have been standardized and serialized, but compared to sliding bearings, they have larger radial dimensions, vibration, and noise, and are also more expensive. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling elements, and cage. Strictly speaking, they consist of six major components: outer ring, inner ring, rolling elements, cage, seal, and lubricating oil. A rolling bearing can be defined as having an outer ring, an inner ring, and rolling elements. According to the shape of the rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings. ***** Li Gong Bearing

PPH Bearing would like to introduce some common knowledge about bearing configuration, which may be helpful to you:

Number code in the bearing configuration group

/D - Two sets of bearings

/T - Three sets of bearings

/Q - Four sets of bearings

/P - Five sets of bearings

/S - Six sets of bearings

Arrangement code in bearing configuration group

B - Back to back

F - Face to face

T - series connection

BT - back-to-back and serial

FT Face to face and in series

BC - back-to-back paired series connection

FC - Face to face paired series connection

give an example:

7210C/DB paired back-to-back installation

32208/DF paired face-to-face installation

7210C/DT paired series installation

7210C/TBT three sets of configuration, two sets in series and one set back-to-back

7210C/TFT three sets of configuration, two sets in series and one set face-to-face

7210C/TT three sets of configuration, connected in series

7210C/QBC four sets of configuration, back-to-back paired series connection

7210C/QFC four sets of configurations, paired in series face-to-face

7210C/QT four sets of configuration, connected in series

7210C/QBC four sets of configuration, three sets in series and one set back-to-back

7210C/QFT four sets of configuration, three sets in series and one set face-to-face

The above content is provided by PPH bearings for you. PPH bearings look forward to working with you!