key dimension (mm)

FW	310
D	380
B,C	100
γ(min)	2.1
d	280

Basic rated load (N)

Cr	905000
Cor	2050000

Limit speed min ^-1

oiling	1300

Bearing code without inner ring

RNA48	—
RNA49	RNA4956
RNA59	—

Bearing code has an inner ring

NA	NA4956

Weight (kg) (Ref.)

No inner circle	20.5
There is an inner circle	31