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In the ball bearing and high precision bearing ranges, the high precision angular contact ball bearing solves the maximum reliability constraints with increased performance in terms of rigidity, speed, capacity and precision. This bearing is recommended for demanding applications in terms of precision such as machine tool spindles. NTN is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.
Log in To add this product to your basket Documentation Product information PRODUCT DEFINITION Brand SNR d - Internal diameter 50 mm D - External diameter 72 mm B - Bearing/Inner ring width 12 mm d1 - External diameter inner ring 56,8 mm d2 - External diameter inner ring 54,7 mm D1 - Inner diameter outer ring 66,01 mm D2 - Inner diameter outer ring 67,51 mm a - Charge load application point 20 mm α - Contact angle 25 ° rs - Min fillet radius 0,6 mm r1s - Min fillet radius 0,3 mm Precision class P4S Mass 0,129 kg
PRODUCT PERFORMANCE C - Dynamic load 7,1 kN C0 - Static load 5,3 kN Cu - Fatigue limit load 0,34 kN f0 - Coefficient 8.658 Axial displacement K Factor 0.61 Preload level 7 Preload value 0,06 kN Axial rigidity 90 N/µm Radial rigidity 200 N/µm Tmin - Min operating temperature -20 °C Tmax - Max operating temperature 120 °C N lim - Grease lubrication limit speed 22000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 13,916 Hz BPFI - Over rolling frequency on inner (60 rpm) 16,084 Hz BSF - Over rolling frequency on rolling element (60 rpm) 12,471 Hz BRF - Rotational frequency – rolling element (60 rpm) 6,236 Hz FTF - Rotational frequency - cage (60 rpm) 0,464 Hz
ABUTMENT da min - Min shoulder diameter IR 54,5 mm db min - Min IR shoulder diameter 54,5 mm Da max - Max shoulder diameter OR 67,5 mm Db max - Max OR shoulder diameter 67,5 mm r1a - Max fillet radius 0,3 mm ra max - Max shaft & housing fillet radius 0,6 mm
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