Double row tapered roller bearings 48393D - 48320
Specifications
Series :48300
Cone Part Number : 48393D
Cup Part Number :48320
Design Unit : Inch
Cage Material : Stamped Steel
Related Assembly Number(s) :
48393D-902B2
48393D-902B6
Dimensions
d - Bore : 5.3750 in / 136.525mm
D - Cup Outer Diameter : 7.5 in / 190.5 mm
B - Double Cone Width : 3.0625 in / 77.788 mm
C - Cup Width : 1.3125 in / 33.338mm
T - Bearing Width across Cups : 3.0624 in / 77.785mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 : 0.06 in / 1.5 mm
r - Cup Backface "To Clear" Radius2 : 0.130 in / 3.30mm
da - Cone Frontface Backing Diameter : 5.67 in / 144 mm
Db - Cup Backface Backing Diameter : 6.97 in / 177.04mm
Ab - Cage-Cone Frontface Clearance : 0.08 in / 2mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 :16500 lbf / 73300N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4:111000 lbf /492000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 :28700lbf/ 128000N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 : 9060 lbf /40300 N
Factors
K - Factor7 : 1.82
e - ISO Factor8 : 0.32
Y1 - ISO Factor9 : 2.1
Y2 - ISO Factor10 : 3.13
G1 - Heat Generation Factor (Roller-Raceway) ：353
G2 - Heat Generation Factor (Rib-Roller End)： 0.121
