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Spherical roller bearing, pressed steel 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 180 mm D - External diameter 280 mm B - Bearing/Inner ring width 74 mm d2 - External diameter inner ring 203,6 mm D1 - Inner diameter outer ring 255 mm rs - Min fillet radius 2,1 mm Number of lubrication holes 3 ou 4 b - Groove width 13,24 mm k - Hole diameter 6 mm Radial clearance class C4 Mass 16,9 kg
PRODUCT PERFORMANCE C - Dynamic load 1080 kN C0 - Static load 1450 kN Cu - Fatigue limit load 137 kN e - Coefficient 0.23 Y0 - Static axial load coefficient 2.89 Y1 - Lower axial load coefficient 2.95 Y2 - Upper axial load coefficient 4.4 N ref - Reference thermal speed 2000 tr/min N lim - Mechanical Limit Speed 2500 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) 10,61 Hz BPFI - Over rolling frequency on inner (60 rpm) 13,39 Hz BSF - Over rolling frequency on rolling element (60 rpm) 8,418 Hz BRF - Rotational frequency – rolling element (60 rpm) 4,209 Hz FTF - Rotational frequency - cage (60 rpm) 0,442 Hz
ABUTMENT da max - Max shoulder diameter IR 0 mm da min - Min shoulder diameter IR 190,2 mm Da max - Max shoulder diameter OR 269,8 mm ra max - Max shaft & housing fillet radius 2 mm
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