SEMRI Double row tapered roller bearings 779D - 773
Specifications
Series :755
Cone Part Number : 779D
Cup Part Number : 773
Design Unit : Inch
Cage Material : Stamped Steel
Dimensions
d - Bore : 3.8750 in / 98.425 mm
D - Cup Outer Diameter : 7.0866 in / 180 mm
B - Double Cone Width : 4.0300 in / 102.362 mm
C - Cup Width : 1.5748 in / 40 mm
T - Bearing Width across Cups : 4.0295 in / 102.349 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 : 0.06 in / 1.5mm
r - Cup Backface "To Clear" Radius2 : 0.120 in / 3.05mm
da - Cone Frontface Backing Diameter : 4.41 in / 112mm
Db - Cup Backface Backing Diameter : 6.3 in / 160.02 mm
Ab - Cage-Cone Frontface Clearance : 0.07 in / 1.8 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 :20200lbf/89700N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4: 135000 lbf /603000 N
C90(2) - Dynamic Radial Rating(Two-Row, 90 million revolutions)5 :35100lbf/ 156000N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 : 13300 lbf /59200 N
Factors
K - Factor7 : 1.51
e - ISO Factor8 : 0..39
Y1 - ISO Factor9 : 1.75
Y2 - ISO Factor10 : 2.61
G1 - Heat Generation Factor (Roller-Raceway) ：227
G2 - Heat Generation Factor (Rib-Roller End)： 41.3
Cg - Geometry Factor11 : 0.107
