24188BK30 - NTN

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-SNR offers as standard, unsurpassed endurance and longevity.


CAD file

Technical datasheet

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Internal diameter (d) 440 mm
External diameter (D) 720 mm
Bearing/Inner ring width (B) 280 mm
External diameter inner ring (d2) 0 mm
Inner diameter outer ring (D1) 614 mm
Min fillet radius (rs) 6 mm
Number of lubrication holes 8
Groove width (b) 33 mm
Hole diameter (k) 20 mm
Associated sleeve reference AH24188H
Coef (e) 0.39
Lower axial load coef (Y1) 1.75
Upper axial load coef (Y2) 2.61
Static axial load coef (Y0) 1.71
Radial clearance class CN
Mass 449 kg
Brand NTN


Dynamic load (C) 7200 kN
Static load (C0) 13100 kN
Fatigue limit load (Cu) 715 kN
Nlim (oil) 500 tr/min
Nlim (grease) 390 tr/min
Min operating temperature (Tmin) -40 °C
Max operating temperature (Tmax) 120 °C


Min shoulder diameter IR (da min) 468 mm
Max shoulder diameter OR (Da max) 692 mm
Max shaft & housing fillet radius (ra max) 5 mm
Calcul factors image