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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 d2 - External diameter inner ring 30,25 mm D1 - Inner diameter outer ring 42,65 mm D2 - Inner diameter outer ring 44,25 mm a - Charge load application point 11 mm α - Contact angle 17 ° rs - Min fillet radius 1 mm r1s - Min fillet radius 1 mm Precision class P4S Mass 0,076 kg
PRODUCT PERFORMANCE C - Dynamic load 7,4 kN C0 - Static load 3,9 kN Cu - Fatigue limit load 0,23 kN f0 - Coefficient 7.736 Axial displacement K Factor 1.53 Preload level 7 Preload value 0,035 kN Axial rigidity 30 N/µm Radial rigidity 151 N/µm Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 61000 tr/min N lim - Grease lubrication limit speed 44000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 7,238 Hz BPFI - Over rolling frequency on inner (60 rpm) 9,762 Hz BSF - Over rolling frequency on rolling element (60 rpm) 6,302 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,151 Hz FTF - Rotational frequency - cage (60 rpm) 0,426 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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