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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 25 mm D - External diameter 47 mm B - Bearing/Inner ring width 12 mm d1 - External diameter inner ring 32,2 mm D1 - Inner diameter outer ring 40,05 mm D2 - Inner diameter outer ring 43,05 mm a - Charge load application point 11 mm α - Contact angle 15 ° rs - Min fillet radius 1 mm r1s - Min fillet radius 1 mm Precision class P4 Mass 0,076 kg
PRODUCT PERFORMANCE C - Dynamic load 12,8 kN C0 - Static load 8,6 kN Cu - Fatigue limit load 0,48 kN f0 - Coefficient 14.7 Preload level 8 Preload value 0,2 kN Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 49000 tr/min N lim - Grease lubrication limit speed 32000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 6,222 Hz BPFI - Over rolling frequency on inner (60 rpm) 8,778 Hz BSF - Over rolling frequency on rolling element (60 rpm) 5,505 Hz BRF - Rotational frequency – rolling element (60 rpm) 2,753 Hz FTF - Rotational frequency - cage (60 rpm) 0,415 Hz
ABUTMENT da min - Min shoulder diameter IR 29,5 mm db min - Min IR shoulder diameter 29,5 mm Da max - Max shoulder diameter OR 42,5 mm Db max - Max OR shoulder diameter 42,5 mm r1a - Max fillet radius 1 mm ra max - Max shaft & housing fillet radius 1 mm
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