7909CTYNSULP4 Angular Contact Ball Bearing

Bearing model:7909CTYNSULP4  Angular Contact Ball Bearing
Inner Diameter (ID):45 mm
Outer diameter (OD):68 mm
Width/Height: 12 mm
Material:chrome steel(GCR15SiMn)
Number of Row: single row
Seals type: open
Contact Angle:C=15°;AC=25°,A=30°; B=40°
Material: No mark:Steel ball(SUJ2); SN24:Ceramic ball(Si3N4)
Cage structure:
TYN:polyamide resin cage
TR : Phenolic resin cage
Combination of mark:
SU:Universal combination (single row)
DU:Universal combination (double rows)
DB: Back-to-back combination
DF: Face-to-face combination
DT: Parallel combination
DBD.DFD.DTD:  Three rows
DBB.DFF.DBT.DFT.DTT: Four rows
Preloaded mark:
EL: Micro preloaded
L : Light preload
M : Medium preloade
H : Heavy preloaded
Precision grade:
P2 : ISO2;   
P4 : ISO4; 
P5 : ISO5
P3 : Special grade(Dimensional accuracy:ISO4,Rotation accuracy:ISO2)
p4Y: Special grade