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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 240 mm D - External diameter 400 mm B - Bearing/Inner ring width 128 mm D1 - Inner diameter outer ring 355,3 mm rs - Min fillet radius 4 mm Number of lubrication holes 3 ou 8 b - Groove width 19,63 mm k - Hole diameter 9 mm Radial clearance class C3 Mass 64,72 kg
PRODUCT PERFORMANCE C - Dynamic load 2510 kN C0 - Static load 3500 kN Cu - Fatigue limit load 299 kN e - Coefficient 0.29 Y0 - Static axial load coefficient 2.26 Y1 - Lower axial load coefficient 2.32 Y2 - Upper axial load coefficient 3.45 N ref - Reference thermal speed 1100 tr/min N lim - Mechanical Limit Speed 1600 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) 9,576 Hz BPFI - Over rolling frequency on inner (60 rpm) 12,424 Hz BSF - Over rolling frequency on rolling element (60 rpm) 7,457 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,729 Hz FTF - Rotational frequency - cage (60 rpm) 0,435 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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