RNA 4900 Series

Description

RNA Series Machined Needle Roller Bearings are precision radial bearings with a machined steel outer ring, needle roller and cage assembly, but no inner ring. They are designed for applications where the shaft acts as the raceway and is hardened and precision-ground. Their compact construction provides high radial load capacity while minimizing installation space.

Features

Machined, high-strength steel outer ring
No inner ring for a compact design
High radial load-carrying capacity
Suitable for high-speed applications
Low friction and smooth operation
High rigidity and long service life
Available with lubrication grooves and lubrication holes on many sizes
Ideal for applications with limited installation space

RNA Series Needle Roller Bearing Dimensions

Bearing Number	Bore (Fw) mm	Outer Diameter (D) mm	Width (C) mm
RNA4900	14	22	13
RNA4901	16	24	13
RNA4902	20	28	13
RNA4903	22	30	13
RNA4904	25	37	17
RNA4905	30	42	17
RNA4906	35	47	17
RNA4907	42	55	20
RNA4908	48	62	22
RNA4909	52	68	22
RNA4910	58	72	22
RNA4911	63	80	25
RNA4912	68	85	25
RNA4913	72	90	25
RNA4914	80	100	30
RNA4915	85	105	30
RNA4916	90	110	30
RNA4917	95	120	35
RNA4918	100	125	35
RNA4919	105	130	35
RNA4920	110	140	40

Dimension Symbols

Fw = Raceway Diameter (Housing Bore)
D = Outside Diameter
C = Bearing Width

RNA Series machined needle roller bearings are supplied without an inner ring. They are suitable for applications where the shaft is hardened and ground to serve as the bearing raceway, offering a compact design, high radial load capacity, and excellent rigidity.