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AS AN ESSENTIAL, LIFE-SUSTAINING BUSINESS, AST BEARINGS WILL REMAIN OPEN AMIDST THE CORONAVIRUS PANDEMIC.

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Spherical Plain Bearings Nomenclature (Part Numbering System)

Each spherical plain bearing series can be divided into a prefix (series), main bearing number (size), and suffixes (options). The main bearing number depicts the bearing’s bore nominal dimension in millimeters. The chart below describes the various prefixes and suffixes for each spherical plain bearing type supplied by AST Bearings. 

Maintenance Type Spherical Plain Bearing Nomenclature

Below is the nomenclature used with AST Bearings' spherical plain bearings requiring maintenance (lubrication) series:

Prefix Suffix Description
GE   Metric Standard Spherical Plain Bearing
GEZ   Inch Standard Spherical Plain Bearing
GEG   Metric High Load
GEF   Thin Section Metric
GEGZ   Inch High Load
GEEM   Extended Inner Ring Sealed Metric
GEEW   Extended Inner Ring Metric
GEWZ   Extended Inner Ring Inch
GEC   2pc Outer Ring W/ Retaining Rings
GEK   2pc Outer Ring W/ Ret. Rings & Chrome Plated Inner
GEBJ   Metric Carbon Steel Outer Pressed Around Inner
GEFZ   Inch Carbon Steel Outer Pressed Around Inner
GEBK   Bronze Lined Outer Race
  E No Lube Holes Or Grooves
  ES Lube Holes And Annular Groove
  S Chromium Plating On Inner Ring
  -2RS Double Sealed
  XS 2 Pc. Outer Ring With Retaining Rings
  HS/K Spacer Between 2pc. Outer Ring

Numbering Example:

Maintenance Type Spherical Plain Bearing Nomenclature

This is a metric standard spherical plain bearing, 80 mm bore, with Lube holes and annular groove, and double seals.


 

Maintenance Free Spherical Plain Bearing Nomenclature

Below is the nomenclature used with AST Bearings' maintenance-free spherical plain bearings series:

Prefix
Suffix Description
GE
 
Metric Standard Spherical Plain Bearing
GEBJ
 
Thin Section Metric
GEC
 
2pc Outer Ring W/ Retaining Rings
GEFZ
 
Inch Standard Spherical Plain Bearing
GEG
 
Metric High Load
GEH
 
Metric High Load 2pc Outer W/Screws
GEZ
 
Inch W/ Double Seals
  -2RS
Double Sealed
  C
PTFE Composite Sliding Surface
  ET
Fractured Outer
  ET/X
Fractured Stainless Outer
  HC
2pc Carbon Outer W/Screws, PTFE Composite
  HF/Q
2pc Outer W/ Screws, Cu Alloy Inner
  HT
2pc Carbon Outer W/Screws, PTFE Fabric
  N
PTFE Plastic Sliding Surface
  S
Annular Grooves And Lube Holes In Inner Ring
  T
PTFE Fabric Sliding Surface
  XF/Q
2pc Outer W/ Retaining Rings, Cu Alloy Inner
  XT
2pc. Outer W/ Retaining Rings
  XT/X
2pc Stainless Outer W/ Retaining Rings

Numbering Example:

Maintenance Type SPB Nomenclature

This is a metric standard spherical plain bearing, 50 mm bore, with PTFE composite sliding surface, and double seals.