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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 50 mm D - External diameter 80 mm B - Bearing/Inner ring width 16 mm d1 - External diameter inner ring 59,7 mm D1 - Inner diameter outer ring 70 mm D2 - Inner diameter outer ring 73,8 mm a - Charge load application point 17 mm α - Contact angle 15 ° rs - Min fillet radius 1 mm r1s - Min fillet radius 0,6 mm Precision class P4 Mass 0,256 kg
PRODUCT PERFORMANCE C - Dynamic load 26 kN C0 - Static load 21,9 kN Cu - Fatigue limit load 1,17 kN f0 - Coefficient 15.667 Axial displacement K Factor 1.16 Preload level 7 Preload value 0,14 kN Axial rigidity 65 N/µm Radial rigidity 367 N/µm Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 27000 tr/min N lim - Grease lubrication limit speed 17500 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 8,267 Hz BPFI - Over rolling frequency on inner (60 rpm) 10,733 Hz BSF - Over rolling frequency on rolling element (60 rpm) 7,319 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,66 Hz FTF - Rotational frequency - cage (60 rpm) 0,435 Hz
ABUTMENT da min - Min shoulder diameter IR 55,5 mm db min - Min IR shoulder diameter 54,5 mm Da max - Max shoulder diameter OR 74,5 mm Db max - Max OR shoulder diameter 75,5 mm r1a - Max fillet radius 0,6 mm ra max - Max shaft & housing fillet radius 1 mm
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