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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 240 mm D - External diameter 400 mm B - Bearing/Inner ring width 160 mm d2 - External diameter inner ring 269 mm D1 - Inner diameter outer ring 348,1 mm rs - Min fillet radius 4 mm Number of lubrication holes 3 ou 8 b - Groove width 19,37 mm k - Hole diameter 12 mm Radial clearance class C2 Mass 76,7 kg
PRODUCT PERFORMANCE C - Dynamic load 2860 kN C0 - Static load 3990 kN Cu - Fatigue limit load 342 kN e - Coefficient 0.35 Y0 - Static axial load coefficient 1.88 Y1 - Lower axial load coefficient 1.92 Y2 - Upper axial load coefficient 2.86 N ref - Reference thermal speed 800 tr/min N lim - Mechanical Limit Speed 1300 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) 8,642 Hz BPFI - Over rolling frequency on inner (60 rpm) 11,358 Hz BSF - Over rolling frequency on rolling element (60 rpm) 7,036 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,518 Hz FTF - Rotational frequency - cage (60 rpm) 0,432 Hz
ABUTMENT da max - Max shoulder diameter IR 0 mm da min - Min shoulder diameter IR 257 mm Da max - Max shoulder diameter OR 383 mm ra max - Max shaft & housing fillet radius 3 mm
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