Double row tapered roller bearings 487TD - 474
Specifications
Series :475
Cone Part Number : 487TD
Cup Part Number :474
Design Unit : Inch
Cage Material : Stamped Steel
Dimensions
d - Bore : 2.8375 in / 72.073mm
D - Cup Outer Diameter : 5.1181 in / 130 mm
B - Double Cone Width : 2.6590 in / 67.539 mm
C - Cup Width : 1.2205 in / 31.001mm
T - Bearing Width across Cups : 2.8756 in / 73.040mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 : 0.03 in / 0.8 mm
r - Cup Backface "To Clear" Radius2 : 0.08 in / 2.03mm
da - Cone Frontface Backing Diameter : 3.15in / 80mm
Db - Cup Backface Backing Diameter : 4.37 in / 111.0mm
Ab - Cage-Cone Frontface Clearance : 0.12 in / 3 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 :7890 lbf / 35100N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4:53000 lbf /236000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 :13700lbf/ 61100N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 : 5200 lbf /23100 N
Factors
K - Factor7 : 1.52
e - ISO Factor8 : 0.38
Y1 - ISO Factor9 : 1.75
Y2 - ISO Factor10 : 2.61
G1 - Heat Generation Factor (Roller-Raceway) ：353
G2 - Heat Generation Factor (Rib-Roller End)： 23.7
Cg - Geometry Factor11 : 0.108
