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81211T2 - NTN

81211T2

Needle roller bearing, thrust cylindrical roller bearing, 812 series

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Technical datasheet

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Specs

PRODUCT DEFINITION

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
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
Mass 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
Brand NTN
Product classification image

PRODUCT PERFORMANCE

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 - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C

ABUTMENT

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