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Spherical Plain Bearings Nomenclature (Part Numbering System)

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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.

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