NA 4900 Series

Description

NA Series Machined Needle Roller Bearings are precision radial bearings featuring a machined steel outer ring, needle roller and cage assembly, and an inner ring. The integrated inner ring allows these bearings to be used on shafts that are not hardened or precision-ground, making them a versatile solution for a wide range of industrial applications. They combine high load capacity with compact dimensions and reliable performance.

Features

Machined, high-strength steel outer ring
Supplied with a precision inner ring
High radial load-carrying capacity
Compact and space-saving design
Suitable for high-speed operation
Low friction and smooth running
High rigidity and long service life
Easy installation and maintenance
Available with lubrication grooves and holes on many sizes.

NA Series Needle Roller Bearing Dimensions

Bearing Number	Bore (d) mm	Outer Diameter (D) mm	Width (B) mm
NA4900	10	22	13
NA4901	12	24	13
NA4902	15	28	13
NA4903	17	30	13
NA4904	20	37	17
NA4905	25	42	17
NA4906	30	47	17
NA4907	35	55	20
NA4908	40	62	22
NA4909	45	68	22
NA4910	50	72	22
NA4911	55	80	25
NA4912	60	85	25
NA4913	65	90	25
NA4914	70	100	30
NA4915	75	105	30
NA4916	80	110	30
NA4917	85	120	35
NA4918	90	125	35
NA4919	95	130	35
NA4920	100	140	40

Note:
d = Bore Diameter
D = Outer Diameter
B = Bearing Width

NA Series bearings are machined needle roller bearings with an inner ring and are suitable for applications where the shaft cannot be hardened and ground.