NNU4976-S-K-M-SP FAG Catalog

Super precision cylindrical roller bearings NNU49..-S-K-M-SP, non-locating bearing, double row, with tapered bore, taper 1:12, separable, with cage

d	Bore diameter	380 mm
D	Outside diameter	520 mm
B	Width	140 mm
Cr	Basic dynamic load rating, radial	1.440.000 N
C0r	Basic static load rating, radial	3.600.000 N
Cur	Fatigue load limit, radial	375.000 N
nG Grease	Limiting speed for grease lubrication	1.380 1/min
nG Oil	Limiting speed for oil lubrication	1.620 1/min
≈m	Weight	85,04 kg
da	diameter shaft shoulder	422,6 mm
Da	diameter of housing shoulder	482 mm
ra1 max	Maximum recess radius	3 mm
r1 min	Minimum chamfer dimension	4 mm
F	Raceway diameter inner ring	426 mm
ns	Width of lubricating groove	17,7 mm
ds	Diameter lubrication hole	9,5 mm
s	Axial displacement	7,2 mm
Tmin	Operating temperature min.	-30 °C
Tmax	Operating temperature max.	150 °C
Cage	Brass Cage	M
Tolerance class	tolerance class SP	SP
Bore design	Tapered	K
Locating Feature , bearing outer ring	Lubrication holes and lubrication groove in outer ring	S
Radial internal clearance	Group 1 (C1)	C1