NNU4921-S-M-SP FAG Catalog

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

Replacements: NNU4921M.SP, NNU4921S.M.SP

d	Bore diameter	105 mm
D	Outside diameter	145 mm
B	Width	40 mm
Cr	Basic dynamic load rating, radial	130.000 N
C0r	Basic static load rating, radial	260.000 N
Cur	Fatigue load limit, radial	34.500 N
nG Grease	Limiting speed for grease lubrication	5.500 1/min
nG Oil	Limiting speed for oil lubrication	6.500 1/min
≈m	Weight	2,011 kg
da	diameter shaft shoulder	117 mm
Da	diameter of housing shoulder	134 mm
ra1 max	Maximum recess radius	1 mm
r1 min	Minimum chamfer dimension	1,1 mm
F	Raceway diameter inner ring	118 mm
ns	Width of lubricating groove	6,5 mm
ds	Diameter lubrication hole	3,2 mm
s	Axial displacement	2 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