NNU 4944 BK/SPW33 - Super Precision Cylindrical Roller Bearings

model	NNU 4944 BK/SPW33
Metering system	Metric system
Roller Bearing Type	Cylindrical
Aperture type	conical hole, taper1:12
Load Direction	Radial force and axial force
Structure	Double row
Seal Type	Open
Inside Diameter	220 mm
Inner Diameter Tolerance	0 to +0.030mm
Outer Diameter	300 mm
Outer Diameter Tolerance	-0.018mm to 0
Width	80 mm
Width Tolerance	-0.30mm to 0
Outer ring shoulder diameter	272.2 mm
Raceway Diameter Inner Ring	245 mm
Annular lubrication groove outer ring width（b1）	11.1 mm
Diameter Lubrication Hole (outer Ring) (K)	3 mm
Outer ring chamfer size(r1,2)(min)	2.1 mm
Inner ring chamfer size (r3 4) (min)	1.1 mm
Allowable Axial Displacement (Max)	3.7 mm
Ferrule Material	51200 Chrome steel
Roller material	51200 Chrome steel
Dynamic Radial Load	512 kN
Static Radial Load	1140 kN
Max Speed(X1000 rpm)	3
Lubricant	Grease、Engine Oil
Temperature Range	-30° to 110 °C
RoHS Standard	Conform
REACH Standard	Conform
Weight	16.5 kg

Information