NNU 4921 BK/SPW33 - Super Precision Cylindrical Roller Bearings

model	NNU 4921 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	105 mm
Inner Diameter Tolerance	0 to +0.020mm
Outer Diameter	145 mm
Outer Diameter Tolerance	-0.011mm to 0
Width	40 mm
Width Tolerance	-0.20mm to 0
Outer ring shoulder diameter	130.8 mm
Raceway Diameter Inner Ring	118 mm
Annular lubrication groove outer ring width（b1）	5.5 mm
Diameter Lubrication Hole (outer Ring) (K)	3 mm
Outer ring chamfer size(r1,2)(min)	1.1 mm
Inner ring chamfer size (r3 4) (min)	0.6 mm
Allowable Axial Displacement (Max)	1.1 mm
Ferrule Material	51200 Chrome steel
Roller material	51200 Chrome steel
Dynamic Radial Load	130 kN
Static Radial Load	260 kN
Max Speed(X1000 rpm)	6
Lubricant	Grease、Engine Oil
Temperature Range	-30° to 110 °C
RoHS Standard	Conform
REACH Standard	Conform
Weight	2 kg

Information