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7209 - NTN

7209

Angular contact ball bearings, pressed steel cage

The single row angular contact ball bearing is designed to withstand combined loads with a predominant axial component. Installed in opposition with another bearing of the same type, it guarantees high mounting rigidity.

The NTN range is available in several variants: 30° or 40° angles, polyamide, pressed steel or solid brass cages, universal pairing available, clearances or preloads, etc.

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter45 mm
D - External diameter85 mm
B - Bearing/Inner ring width19 mm
a - Charge load application point28,5 mm
α - Contact angle30 °
rs - Min fillet radius1,1 mm
r1s - Min fillet radius0,6 mm
Radial clearance classCN
Mass0,404 kg
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PRODUCT PERFORMANCE
C - Dynamic load44 kN
C0 - Static load28,7 kN
Cu - Fatigue limit load2,25 kN
N lim - Oil lubrication limit speed12000 tr/min
N lim - Grease lubrication limit speed8700 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR52 mm
db min - Min IR shoulder diameter49,5 mm
Da max - Max shoulder diameter OR78 mm
Db max - Max OR shoulder diameter80,5 mm
r1a - Max fillet radius0,6 mm
ra max - Max shaft & housing fillet radius1 mm
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