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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 45 mm D - External diameter 75 mm B - Bearing/Inner ring width 16 mm d1 - External diameter inner ring 60,5 mm D1 - Inner diameter outer ring 65 mm D2 - Inner diameter outer ring 68,81 mm a - Charge load application point 16 mm α - Contact angle 15 ° rs - Min fillet radius 1 mm r1s - Min fillet radius 0,6 mm Precision class P4 Mass 0,238 kg
PRODUCT PERFORMANCE C - Dynamic load 25,3 kN C0 - Static load 20,4 kN Cu - Fatigue limit load 1,11 kN f0 - Coefficient 15.4 Axial displacement K Factor 1.21 Preload level 7 Preload value 0,13 kN Axial rigidity 61 N/µm Radial rigidity 344 N/µm Tmin - Min operating temperature -30 °C Tmax - Max operating temperature 120 °C N lim - Oil lubrication limit speed 29000 tr/min N lim - Grease lubrication limit speed 19000 tr/min
BEARING FREQUENCIES BPFO - Over rolling frequency on outer ring (60 rpm) 7,735 Hz BPFI - Over rolling frequency on inner (60 rpm) 10,265 Hz BSF - Over rolling frequency on rolling element (60 rpm) 6,736 Hz BRF - Rotational frequency – rolling element (60 rpm) 3,368 Hz FTF - Rotational frequency - cage (60 rpm) 0,43 Hz
ABUTMENT da min - Min shoulder diameter IR 50,5 mm db min - Min IR shoulder diameter 50,5 mm Da max - Max shoulder diameter OR 69,5 mm Db max - Max OR shoulder diameter 70,5 mm r1a - Max fillet radius 0,6 mm ra max - Max shaft & housing fillet radius 1 mm
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