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Spherical roller bearings

21309EAKW33 - SNR

21309EAKW33
21309EAKW33
21309EAKW33
21309EAKW33

Spherical roller bearing, pressed steel cage, groove and lubrication holes on outer ring, tapered bore 1:12

The spherical roller bearing withstands significant loads and misalignments. This type of roller bearing is well adapted to harsh operating conditions: impacts or vibrations (crushers, vibrating screens, heavy handling, etc.). With the ULTAGE design, NTN offers as standard, unsurpassed endurance and longevity.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter45 mm
D - External diameter100 mm
B - Bearing/Inner ring width25 mm
d2 - External diameter inner ring65 mm
D1 - Inner diameter outer ring86,7 mm
rs - Min fillet radius1,5 mm
Number of lubrication holes3
b - Groove width6,84 mm
k - Hole diameter3 mm
Associated sleeve referenceH309
Radial clearance classCN
Mass0,93 kg
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PRODUCT PERFORMANCE
C - Dynamic load138 kN
C0 - Static load134 kN
Cu - Fatigue limit load16,3 kN
e - Coefficient0.23
Y0 - Static axial load coefficient2.83
Y1 - Lower axial load coefficient2.9
Y2 - Upper axial load coefficient4.31
N ref - Reference thermal speed5600 tr/min
N lim - Mechanical Limit Speed8300 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature200 °C
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)7,69 Hz
BPFI - Over rolling frequency on inner (60 rpm)10,31 Hz
BSF - Over rolling frequency on rolling element (60 rpm)6,643 Hz
BRF - Rotational frequency – rolling element (60 rpm)3,322 Hz
FTF - Rotational frequency - cage (60 rpm)0,427 Hz
ABUTMENT
da max - Max shoulder diameter IR0 mm
da min - Min shoulder diameter IR54 mm
db - Min diameter for Sleeve50 mm
Ce - Min length fro Sleeve5 mm
Da max - Max shoulder diameter OR91 mm
ra max - Max shaft & housing fillet radius1,5 mm
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