Technical data
NK47/20R
Needle roller bearing, machined-ring, without inner ring
Needle roller bearing, machined-ring, without inner ring, double-side ribs, lubrication hole
Needle roller bearing, machined-ring, without inner ring, double-side ribs, lubrication hole
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Visual(s)
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Product definition
Fw 47 mm D 57 mm C 20 mm rs min 0.3 mm Dw 3 mm Lw 15.6 mm Lubrication hole on outer ring Oui/Yes k 3 mm Radial clearance class CN Precision class P0 Mass 0.1 kg Brand NTN -
Product performance
Cr 28.8 kN C0r 55.5 kN Nlim (grease) 5,500 Tr/min Nlim (oil) 8,500 Tr/min Min operating temperature, Tmin -20 °C Max operating temperature, Tmax 120 °C Characteristic cage frequency, FTF 0.47 Hz Characteristic rolling element frequency, BSF 16.61 Hz Characteristic outer ring frequency, BPF0 15.04 Hz Characteristic inner ring frequency, BPFI 16.96 Hz -
Abutment dimensions
Da max 55 mm ras max 0.3 mm
