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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 55 mm D - External diameter 90 mm B - Bearing/Inner ring width 18 mm d1 - External diameter inner ring 66,8 mm D1 - Inner diameter outer ring 78,2 mm D2 - Inner diameter outer ring 81,9 mm a - Charge load application point 19 mm α - Contact angle 15 ° rs - Min fillet radius 1,1 mm r1s - Min fillet radius 1 mm Precision class P4 Mass 0,39 kg
PRODUCT PERFORMANCE C - Dynamic load 31,2 kN C0 - Static load 27,6 kN Cu - Fatigue limit load 1,46 kN f0 - Coefficient 15.738 Axial displacement K Factor 1.13 Preload level 7 Preload value 0,16 kN Axial rigidity 70 N/µm Radial rigidity 402 N/µm Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 24000 tr/min N lim - Grease lubrication limit speed 16000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 8,731 Hz BPFI - Over rolling frequency on inner (60 rpm) 11,27 Hz BSF - Over rolling frequency on rolling element (60 rpm) 7,486 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,743 Hz FTF - Rotational frequency - cage (60 rpm) 0,437 Hz
ABUTMENT da min - Min shoulder diameter IR 62 mm db min - Min IR shoulder diameter 62 mm Da max - Max shoulder diameter OR 83 mm Db max - Max OR shoulder diameter 83 mm r1a - Max fillet radius 1 mm ra max - Max shaft & housing fillet radius 1 mm
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