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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 20 mm D - External diameter 37 mm B - Bearing/Inner ring width 9 mm d1 - External diameter inner ring 25,1 mm D1 - Inner diameter outer ring 31,9 mm D2 - Inner diameter outer ring 34,02 mm a - Charge load application point 8 mm α - Contact angle 15 ° rs - Min fillet radius 0,3 mm r1s - Min fillet radius 0,3 mm Precision class P4 Mass 0,036 kg
PRODUCT PERFORMANCE C - Dynamic load 7,2 kN C0 - Static load 4,6 kN Cu - Fatigue limit load 0,27 kN f0 - Coefficient 14.037 Axial displacement K Factor 1.9 Preload level 7 Preload value 0,035 kN Axial rigidity 26 N/µm Radial rigidity 150 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 40000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 6,29 Hz BPFI - Over rolling frequency on inner (60 rpm) 8,71 Hz BSF - Over rolling frequency on rolling element (60 rpm) 5,829 Hz BRF - Rotational frequency – rolling element (60 rpm) 2,915 Hz FTF - Rotational frequency - cage (60 rpm) 0,419 Hz
ABUTMENT da min - Min shoulder diameter IR 22,5 mm db min - Min IR shoulder diameter 22,5 mm Da max - Max shoulder diameter OR 34,5 mm Db max - Max OR shoulder diameter 34,5 mm r1a - Max fillet radius 0,3 mm ra max - Max shaft & housing fillet radius 0,3 mm
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