NNU4948-S-M-SP FAG Catalog

Super precision cylindrical roller bearings NNU49..-S-M-SP, non-locating bearing, double row, separable, with cage

d	Bore diameter	240 mm
D	Outside diameter	320 mm
B	Width	80 mm
Cr	Basic dynamic load rating, radial	530.000 N
C0r	Basic static load rating, radial	1.210.000 N
Cur	Fatigue load limit, radial	138.000 N
nG Grease	Limiting speed for grease lubrication	2.400 1/min
nG Oil	Limiting speed for oil lubrication	2.800 1/min
≈m	Weight	17,8 kg
da	diameter shaft shoulder	263 mm
Da	diameter of housing shoulder	299 mm
ra1 max	Maximum recess radius	2,1 mm
r1 min	Minimum chamfer dimension	2,1 mm
F	Raceway diameter inner ring	265 mm
ns	Width of lubricating groove	12,2 mm
ds	Diameter lubrication hole	6,3 mm
s	Axial displacement	4,3 mm
Tmin	Operating temperature min.	-30 °C
Tmax	Operating temperature max.	150 °C
Cage	Brass Cage	M
Tolerance class	tolerance class SP	SP
Locating Feature , bearing outer ring	Lubrication holes and lubrication groove in outer ring	S
Radial internal clearance	Group 1 (C1)	C1