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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 40 mm D - External diameter 68 mm B - Bearing/Inner ring width 15 mm d1 - External diameter inner ring 49,2 mm D1 - Inner diameter outer ring 59 mm D2 - Inner diameter outer ring 63,34 mm a - Charge load application point 15 mm α - Contact angle 15 ° rs - Min fillet radius 1,5 mm r1s - Min fillet radius 1 mm Precision class P4 Mass 0,185 kg
PRODUCT PERFORMANCE C - Dynamic load 21,3 kN C0 - Static load 16,8 kN Cu - Fatigue limit load 0,76 kN f0 - Coefficient 15.4 Axial displacement K Factor 1.32 Preload level 7 Preload value 0,11 kN Axial rigidity 55 N/µm Radial rigidity 312 N/µm Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 32000 tr/min N lim - Grease lubrication limit speed 21000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 7,722 Hz BPFI - Over rolling frequency on inner (60 rpm) 10,278 Hz BSF - Over rolling frequency on rolling element (60 rpm) 6,666 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,333 Hz FTF - Rotational frequency - cage (60 rpm) 0,429 Hz
ABUTMENT da min - Min shoulder diameter IR 45,5 mm db min - Min IR shoulder diameter 45,5 mm Da max - Max shoulder diameter OR 62,5 mm Db max - Max OR shoulder diameter 62,5 mm r1a - Max fillet radius 1 mm ra max - Max shaft & housing fillet radius 1,5 mm
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