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NNU4988-S-K-M-SP

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NNU4988-S-K-M-SP

Cylindrical roller bearing

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

Description

NNU4988-S-K-M-SP

NNU4988-S-K-M-SP

NNU4988-S-K-M-SP

Metric

Imperial

Main Dimensions & Performance Data
d440 mmBore diameter
D600 mmOutside diameter
B160 mmWidth
Cr2,040,000 NBasic dynamic load rating, radial
C0r5,200,000 NBasic static load rating, radial
Cur530,000 NFatigue load limit, radial
nG Grease1,150 1/minLimiting speed for grease lubrication
nG Oil1,360 1/minLimiting speed for oil lubrication
≈m128.54 kgWeight
Mounting dimensions
da486.8 mmdiameter shaft shoulder
h12 diameter shaft shoulder tolerance
Da558 mmdiameter of housing shoulder
H12 diameter of housing shoulder tolerance
ra1 max3 mmMaximum recess radius
Dimensions
r1 min4 mmMinimum chamfer dimension
F490 mmRaceway diameter inner ring
ns17.7 mmWidth of lubricating groove
ds9.5 mmDiameter lubrication hole
s6.8 mmAxial displacement
Temperature range
Tmin-30 °COperating temperature min.
Tmax150 °COperating temperature max.
Your current product variant
CageMBrass Cage
Tolerance classSPtolerance class SP
Bore typeKTapered, taper 1:12
Locating Feature , bearing outer ringSLubrication holes and lubrication groove in outer ring
Radial internal clearanceC1Group 1 (C1)
Number of rolling element rows2Double-row design

Characteristics

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