Documentation

Product information

CARACTERÍSTICAS TÉCNICAS
Marca	NTN
d - Bore diameter of support washer IR - WS	45 mm
D - Outside diameter of support washer OR - GS	73 mm
d1 - External diameter of support washer IR - WS	73 mm
D1 - Bore diameter bearing washer OR - GS	47 mm
T - Thrust bearing height	20 mm
Dw - Rolling element diameter	9 mm
Dc1 - Roller cage bore diameter	45 mm
Dc - Roller cage outer diameter	73 mm
rs - Min fillet radius	1 mm
Cage assembly reference	K81209T2
Bearing ring (inner ring) WS	WS81209
Bearing ring (outer ring) GS	GS81209
Ea - Rollers reference outer diameter	68 mm
Eb - Rollers reference inner diameter	48,8 mm
Peso	0,31 kg
Cage assembly mass	0,1 kg
Bearing ring (inner ring) WS mass	0,105 kg
Bearing ring (outer ring) GS mass	0,105 kg

DESEMPENHO
Ca - Dynamic axial load rating	82 kN
C0a - Static axial load rating	222 kN
Cua - Limit axial load rating	27 kN
N lim - Grease lubrication limit speed	1000 tr/min
N lim - Oil lubrication limit speed	4100 tr/min
Tmin - Temperatura mín de operação	-20 °C
Tmax - Temperatura máx de operação	120 °C

RECOMENDACOES DE BARREIRA
da min - Min shoulder diameter IR	68 mm
Db max - Max OR shoulder diameter	49 mm
ras max - Max shaft & housing fillet radius	1 mm