SEMRI Double row tapered roller bearings 581D - 572A
Specifications
Series :575
Cone Part Number : 581D
Cup Part Number :572A
Design Unit : Inch
Cage Material : Stamped Steel
Dimensions
d - Bore : 3 3/16 in / 80.963mm
D - Cup Outer Diameter : 5.5115 in / 139.992 mm
B - Double Cone Width : 3.1549 in / 80.134 mm
C - Cup Width : 1.1250 in / 28.575 mm
T - Bearing Width across Cups : 3.0881 in / 78.438 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 : 0.06 in / 1.5mm
r - Cup Backface "To Clear" Radius2 : 0.130 in / 3.30mm
da - Cone Frontface Backing Diameter : 3.62 in / 92 mm
Db - Cup Backface Backing Diameter : 4.88 in / 123.95 mm
Ab - Cage-Cone Frontface Clearance : 0.1 in / 2.5 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 :12100 lbf / 53600N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4: 80900 lbf /360000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 :21000lbf/ 93400N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 : 8330 lbf /37100 N
Factors
K - Factor7 : 1.45
e - ISO Factor8 : 0.4
Y1 - ISO Factor9 : 1.67
Y2 - ISO Factor10 : 2.49
G1 - Heat Generation Factor (Roller-Raceway) ：175
G2 - Heat Generation Factor (Rib-Roller End)： 41.7
Cg - Geometry Factor11 : 0.13
