outline dimension (mm)

Dc1,Dp1	18
Dc,Dp	31
DW	2

specified load (N)

Cr	8600
Cor	29700

Rated load load {kgf}

Cr	875
Cor	3050

Limit speed min ^-1

oiling	13000

bearing symbol

	FNTA-1831

A pair of coils

s=1.0±0.05	FTRA-1831
s=1.50-0.08	FTRB-1831
s=2.00-0.08	FTRC-1831
s=2.50-0.08	FTRD-1831
s=3.00-0.08	FTRE-1831

Needle roller contact surface (mm)

OD D e (min)	29
ID D i (max)	19.5

Weight (kg) (reference)

FNTA	4
FTRA	3.9