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Spherical roller bearing, pressed steel cage, groove and lubrication holes on outer ring, tapered bore 1:12
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 140 mm D - External diameter 250 mm B - Bearing/Inner ring width 68 mm d2 - External diameter inner ring 163,9 mm D1 - Inner diameter outer ring 223,9 mm rs - Min fillet radius 3 mm Number of lubrication holes 3 ou 4 b - Groove width 14,2 mm k - Hole diameter 7 mm Associated sleeve reference H3128 Radial clearance class C3 Mass 14 kg
PRODUCT PERFORMANCE C - Dynamic load 867 kN C0 - Static load 1010 kN Cu - Fatigue limit load 100 kN e - Coefficient 0.25 Y0 - Static axial load coefficient 2.68 Y1 - Lower axial load coefficient 2.74 Y2 - Upper axial load coefficient 4.08 N ref - Reference thermal speed 2500 tr/min N lim - Mechanical Limit Speed 3300 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) 7,589 Hz BPFI - Over rolling frequency on inner (60 rpm) 10,412 Hz BSF - Over rolling frequency on rolling element (60 rpm) 6,137 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,069 Hz FTF - Rotational frequency - cage (60 rpm) 0,422 Hz
ABUTMENT da max - Max shoulder diameter IR 0 mm da min - Min shoulder diameter IR 154 mm db - Min diameter for Sleeve 149 mm Ce - Min length fro Sleeve 8 mm Da max - Max shoulder diameter OR 236 mm ra max - Max shaft & housing fillet radius 2,5 mm
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