NTN 4T-67790/67720 Bearing

Part Number	4T-67790/67720
Brand	NTN
Type	Tapered roller bearings Inch series
Mass	6.57 kg
Boundary dimensions (mm)
Inner dia. (d)	177.8
Outer dia. (D)	247.65
Width (B)	47.63
ras max	3.5
Basic load ratings (kN)
Dynamic (Cr)	340
Static (Cor)	690
Basic load ratings (kgf)
Dynamic (Cr)	35000
Static (Cor)	70500
Limiting speed (min-1)
Grease	1300
Oil	1700

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-67790/67720 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.