NNU 4938 BK/SPW33 - Super Precision Cylindrical Roller Bearings

model	NNU 4938 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	190 mm
Inner Diameter Tolerance	0 to +0.030mm
Outer Diameter	260 mm
Outer Diameter Tolerance	-0.018mm to 0
Width	69 mm
Width Tolerance	-0.30mm to 0
Outer ring shoulder diameter	236 mm
Raceway Diameter Inner Ring	212 mm
Annular lubrication groove outer ring width（b1）	8.3 mm
Diameter Lubrication Hole (outer Ring) (K)	3 mm
Outer ring chamfer size(r1,2)(min)	2 mm
Inner ring chamfer size (r3 4) (min)	1 mm
Allowable Axial Displacement (Max)	1.1 mm
Ferrule Material	51200 Chrome steel
Roller material	51200 Chrome steel
Dynamic Radial Load	402 kN
Static Radial Load	880 kN
Max Speed(X1000 rpm)	3
Lubricant	Grease、Engine Oil
Temperature Range	-30° to 110 °C
RoHS Standard	Conform
REACH Standard	Conform
Weight	11 kg

Information