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Spherical roller bearings

231/500BL1K - NTN

Spherical roller bearing, with central rib on inner ring, 2-part machined cage centred on inner ring, 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
BrandNTN
d - Internal diameter500 mm
D - External diameter830 mm
B - Bearing/Inner ring width264 mm
d2 - External diameter inner ring0 mm
D1 - Inner diameter outer ring723 mm
rs - Min fillet radius7,5 mm
Number of lubrication holes8
b - Groove width33 mm
k - Hole diameter20 mm
Associated sleeve referenceH31/500
Radial clearance classCN
Mass566 kg
PRODUCT PERFORMANCE
C - Dynamic load7700 kN
C0 - Static load13700 kN
Cu - Fatigue limit load875 kN
e - Coefficient0.32
Y0 - Static axial load coefficient2.08
Y1 - Lower axial load coefficient2.12
Y2 - Upper axial load coefficient3.16
N lim - Oil lubrication limit speed430 tr/min
N lim - Grease lubrication limit speed330 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR532 mm
db - Min diameter for Sleeve527 mm
Ce - Min length fro Sleeve18 mm
Da max - Max shoulder diameter OR798 mm
ra max - Max shaft & housing fillet radius6 mm

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