Skip to Header Skip to Main Content Skip to Footer
Spherical roller bearing, one-piece machined cage, groove and lubrication holes on outer ring
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.
Log in To add this product to your basket Documentation Product information PRODUCT DEFINITION Brand SNR d - Internal diameter 280 mm D - External diameter 420 mm B - Bearing/Inner ring width 140 mm D1 - Inner diameter outer ring 377,4 mm rs - Min fillet radius 4 mm Number of lubrication holes 8 b - Groove width 16,42 mm k - Hole diameter 8 mm Radial clearance class CN Mass 66 kg
PRODUCT PERFORMANCE C - Dynamic load 2720 kN C0 - Static load 4120 kN Cu - Fatigue limit load 344 kN e - Coefficient 0.3 Y0 - Static axial load coefficient 2.2 Y1 - Lower axial load coefficient 2.25 Y2 - Upper axial load coefficient 3.34 N ref - Reference thermal speed 900 tr/min N lim - Mechanical Limit Speed 1500 tr/min Tmin - Min operating temperature -40 °C Tmax - Max operating temperature 200 °C
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 10,637 Hz BPFI - Over rolling frequency on inner (60 rpm) 13,363 Hz BSF - Over rolling frequency on rolling element (60 rpm) 8,521 Hz BRF - Rotational frequency – rolling element (60 rpm) 4,261 Hz FTF - Rotational frequency - cage (60 rpm) 0,443 Hz
ABUTMENT da max - Max shoulder diameter IR 0 mm da min - Min shoulder diameter IR 294,6 mm Da max - Max shoulder diameter OR 405,4 mm ra max - Max shaft & housing fillet radius 3 mm
Industry Calcul Factors 
