NTN 4T-2879/2820 Bearing

Part Number	4T-2879/2820
Brand	NTN
Type	Tapered roller bearings Inch series
Mass	0.465 kg
Boundary dimensions (mm)
Inner dia. (d)	31.75
Outer dia. (D)	73.025
Width (B)	23.812
ras max	0.8
Basic load ratings (kN)
Dynamic (Cr)	62.5
Static (Cor)	75.5
Basic load ratings (kgf)
Dynamic (Cr)	6400
Static (Cor)	7700
Limiting speed (min-1)
Grease	5200
Oil	7000

As for the maximum value for inner and outer ring diameters of bearings whose bearing numbers are marked with "+" (inner ring) and "++" (outer ring), the precision class is an integer for class 4 and class 2 bearings only. Bearings with a # symbol next to the serial number are J-series bearings, and have a different tolerance to other series. For more details, see “Bearing Tolerance” listed in the “NTN ‘Ball and Roller Bearings’ Catalog.”

Nodes have NTN 4T-2879/2820 bearings in stock. Tapered roller bearings (Inch series), are designed so the inner and outer ring raceway and the apex of the tapered rollers intersect at one point on the bearing centerline.