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Needle roller bearing, machined-ring, without inner ring

RNA4840 - NTN

RNA4840

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

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
Fw - Under rollers diameter220 mm
D - External diameter250 mm
C - Width of bearing, drawn cup or outer ring50 mm
rs - Min fillet radius1,5 mm
Lubrication hole on outer ringOui/Yes
k - Hole diameter4 mm
Radial clearance classCN
Precision classP0
Mass3,35 kg
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PRODUCT PERFORMANCE
Cr - Dynamic load rating231 kN
C0r - Static load rating705 kN
N lim - Grease lubrication limit speed1200 tr/min
N lim - Oil lubrication limit speed1800 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
Da max - Max shoulder diameter OR242 mm
ras max - Max shaft & housing fillet radius1,5 mm