key dimension (mm)

FW	450
D	540
B,C	140
γ(min)	4
d	400

Basic rated load (N)

Cr	1600000
Cor	4000000

Limit speed min ^-1

oiling	900

Bearing code without inner ring

RNA48	—
RNA49	RNA4980
RNA59	—

Bearing code has an inner ring

NA	NA4980

Weight (kg) (Ref.)

No inner circle	52.5
There is an inner circle	89