Rolamento de agulha, rolamento axial de rolos cilíndricos, série 812
Arquivo 3D
Folha de dados técnica
CARACTERÍSTICAS TÉCNICAS | |
---|---|
Marca | NTN |
d - Bore diameter of support washer IR - WS | 55 mm |
D - Outside diameter of support washer OR - GS | 90 mm |
d1 - External diameter of support washer IR - WS | 90 mm |
D1 - Bore diameter bearing washer OR - GS | 57 mm |
T - Thrust bearing height | 25 mm |
Dw - Rolling element diameter | 11 mm |
Dc1 - Roller cage bore diameter | 55 mm |
Dc - Roller cage outer diameter | 90 mm |
rs - Min fillet radius | 1 mm |
Cage assembly reference | K81211T2 |
Bearing ring (inner ring) WS | WS81211 |
Bearing ring (outer ring) GS | GS81211 |
Ea - Rollers reference outer diameter | 83,4 mm |
Eb - Rollers reference inner diameter | 60,1 mm |
Peso | 0,61 kg |
Cage assembly mass | 0,19 kg |
Bearing ring (inner ring) WS mass | 0,21 kg |
Bearing ring (outer ring) GS mass | 0,21 kg |
DESEMPENHO | |
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Ca - Dynamic axial load rating | 121 kN |
C0a - Static axial load rating | 340 kN |
Cua - Limit axial load rating | 41,5 kN |
Nlim - Grease lubrication limit speed | 830 tr/min |
Nlim - Oil lubrication limit speed | 3300 tr/min |
Tmin - Temperatura mín de operação | -20 °C |
Tmax - Temperatura máx de operação | 120 °C |
RECOMENDACOES DE BARREIRA | |
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da min - Min shoulder diameter IR | 83 mm |
Db max - Max OR shoulder diameter | 61 mm |
ras max - Max shaft & housing fillet radius | 1 mm |