Home > Bearings Catalogue Online > Plain Bearings 
Bearing GAC55S (AST)
Spherical Plain Bearings / Angular Contact - Steel, PTFE Fabric, PTFE Plastic / Metric Series GAC55S
Bearing number : GAC55S
Size (mm) : 55x90x23
Brand : AST
Bore Diameter (mm) : 55
Outer Diameter (mm) : 90
Width (mm) : 23
Bearing dimensions and specification in AST catalogue:
(dimensions in mm)
Bearing Type - steel-on-steel
Bore Dia (d) - 55.0000
Outer Dia (D) - 90.0000
Width (B) - 23.0000
Outer Width (Bo) - 20.0000
Inner Width (Bi) - 23.0000
Dynamic Load Rating (Cr) - 144,000
Static Load Rating (Cor) - 721,000
Max. shaft corner radius, or 45 deg. chamfer (ch1) - 1.100
Max. housing corner radius, or 45 deg. chamfer (ch) - 1.100
Spherical Diameter (dk or Dk) - 82.000
Mis-alignment Angle (a deg.) - 4
Lubrication Groove Location (A) - 11.500
Spherical Center Location (S) - 5
Weight (g) - 645.00
Material - 52100 Chrome steel, or equivalent
The inner and outer rings are coated with molybdenum disulphide for reduced sliding friction.
This spherical plain bearing has an outer ring groove and thru holes for relubrication.
This spherical plain bearing has two crossed grooves on the load face of the outer ring to enhance the spreading of the grease lubrication.
This spherical plain bearing must be properly lubricated with grease.
A single bearing can only accept axial loading in one direction. A pair of opposing bearings are required for radial loading and bi-direction axial loading.
Search bearings
Bore Dia, mm
Outer Dia, mm:
Bearings Catalogue