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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 42 mm B - Bearing/Inner ring width 9 mm d1 - External diameter inner ring 30,6 mm D1 - Inner diameter outer ring 37,4 mm D2 - Inner diameter outer ring 39,8 mm a - Charge load application point 12 mm α - Contact angle 25 ° rs - Min fillet radius 0,3 mm r1s - Min fillet radius 0,3 mm Precision class P4 Mass 0,041 kg
PRODUCT PERFORMANCE C - Dynamic load 7,3 kN C0 - Static load 5,2 kN Cu - Fatigue limit load 0,31 kN f0 - Coefficient 14.844 Axial displacement K Factor 0.79 Preload level 8 Preload value 0,18 kN Axial rigidity 69 N/µm Radial rigidity 148 N/µm Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 48000 tr/min N lim - Grease lubrication limit speed 31000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 7,421 Hz BPFI - Over rolling frequency on inner (60 rpm) 9,579 Hz BSF - Over rolling frequency on rolling element (60 rpm) 7,025 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,513 Hz FTF - Rotational frequency - cage (60 rpm) 0,437 Hz
ABUTMENT da min - Min shoulder diameter IR 27,5 mm db min - Min IR shoulder diameter 27,5 mm Da max - Max shoulder diameter OR 39,5 mm Db max - Max OR shoulder diameter 39,5 mm r1a - Max fillet radius 0,3 mm ra max - Max shaft & housing fillet radius 0,3 mm
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