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NK17/20R - NTN

NK17/20R

Needle roller bearing, machined-ring, without inner ring, double-side ribs, lubrication hole

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Technical datasheet

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PRODUCT DEFINITION
BrandNTN
Fw - Under rollers diameter17 mm
D - External diameter25 mm
C - Width of bearing, drawn cup or outer ring20 mm
rs - Min fillet radius0,3 mm
Lubrication hole on outer ringYes
k - Hole diameter2,5 mm
Radial clearance classCN
Precision classP0
Mass0,03 kg
Product classification image
PRODUCT PERFORMANCE
Cr - Dynamic load rating15,4 kN
C0r - Static load rating20,4 kN
Nlim - Grease lubrication limit speed15000 tr/min
Nlim - Oil lubrication limit speed22000 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
BEARING FREQUENCIES
BPFO - Characteristic outer ring frequency (60 rpm)6,103 Hz
BPFI - Characteristic inner ring frequency (60 rpm)7,897 Hz
FTF - Characteristic cage frequency (60 rpm)0,436 Hz
BSF - Characteristic rolling element frequency (60 rpm)7,672 Hz
ABUTMENT
Da max - Max shoulder diameter OR23 mm
ras max - Max shaft & housing fillet radius0,3 mm