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Bearing Part Numbers Explained

S 6001 2RS

 Prefix 

 K

L

R

S

W 

 Cage with Roller Elements

 Removable Bearing Ring

Ring with Roller Set

Roll Body of Stainless Steel

Stainless Steel Deep
Note: Each Bearing Company May Create Their Own Prefixes.  eg E2 = SKF Energy Efficient Bearings

 

Basic Number

The 1st Number Relates to the Bearing Type, as Shown in the Table Below.  Type 6 is Deep Grooved Roller Bearing.

1 

 

 

 

 

2

 

 

 

 

3

 

 

 

 

4

 

 

 

5

 

 

 

6

 

 

 

7

 

 

 

 

8

  Self-Aligning-Ball-Bearing

Barrel-and-Spherical-Roller-Bearings

Tapered_Roller_Bearing

Deep_Groove_Double-Row_Ball_Bearing

Axial_Deep_Groove_Ball_Bearing

6 Deep Groove Ball Bearing

7 Single-Row Angular Contact Bearing

8 Axial Cylinder Roller Bearing

 Self-Aligning Bearing

This kind of ball bearing has a spherical outer race, allowing the axis of the bearing to “wander around”.  This is important because misalignment is one of the big causes of bearing failure.

 

 

Barrel and Spherical Roller Bearings

 

 

 

 Tapered Roller Bearing

Designed to take large axial loads as well as radial loads.

 

 

Deep Groove Double-Row Ball Bearing

Designed for heavy radial loads.

 

 

Axial Deep Groove Ball Bearing

Intended for exclusively axial load.

 

 

Deep Groove Ball Bearing (Single Row)

Typical ball bearing.  Handles light axial load as well as radial loads.

 

 

Single-Row Angular Contact Bearing

Specific geometry of angular contact bearing raceways ans shoulders creates ball contact angles that support higher axial loads

 

Axial Cylinder Roller Bearing

Axial cylinder roller bearings comprise axial cylinder roller and cage assemblies and shaft and housing locating washers.  The bearings have particularly small axial section height, have high load carry capacity and high rigidity and can support axial forces in one direction 

 

The 2nd Number Relates the Bearing Series, which Reflects the Robustness of the Bearing.  As you go Up the Scale Below from 9 to 4 the Inner and Outer Race Thickness will usually Increase along with the Ball Size, this will be to Cope with Extra Load.

  • 9 Very Thin Section
  • 0 Extra Light
  • 1 Extra Light Thrust
  • 2 Light
  • 3 Medium
  • 4 Heavy

 

The 3rd and 4th Numbers of the Bearing Number Relate to the Bore Size of the Bearing, Numbers 00 to 03 have a Designation Bore Size Depending on the Number.

  • 00  10mm
  • 01   12mm
  • 02   15mm
  • 03   17mm

While Numbers Over 03 Simply have a Bore Size which is 5 Times that of the 3rd and 4th Digit.

 

 Suffix

 2RS

RS

2Z / ZZ

Z

E

P2

K 

  Bearing with Rubber Seal on Both Sides

Bearing with Rubber Seal on One Side, Other Side Open

 Bearing with a Metal Seal on Both Sides

Bearing with a Metal Seal on Ones Side, Other Side Open

Reinforced Design

Highest Precision

 Bearing with Taper Bore
This information was sourced from engineerstudent.co.uk

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