SEMRI Double row tapered roller bearings 67985D - 67920,
Specifications
Series :67900
Cone Part Number : 67985D
Cup Part Number :67920
Design Unit : Inch
Cage Material : Stamped Steel
Related Assembly Number(s) : 67985D-90059
Dimensions
d - Bore : 8.125 in / 206.375 mm
D - Cup Outer Diameter : 11.1250 in / 282.575 mm
B - Double Cone Width : 3.4375 in / 87.313 mm
C - Cup Width : 1.4375 in / 36.513 mm
T - Bearing Width across Cups : 3.4375 in / 87.313 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 : 0.03 in / 0.800mm
r - Cup Backface "To Clear" Radius2 : 0.130 in / 3.30mm
da - Cone Frontface Backing Diameter : 8.62 in / 219mm
Db - Cup Backface Backing Diameter : 10.24 in / 260.10 mm
Ab - Cage-Cone Frontface Clearance : 0.11in / 2.8 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 : 24700lbf/ 110000N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4: 166000 lbf /738000 N
C90(2) - Dynamic Radial Rating(Two-Row, 90 million revolutions)5 :43000lbf/ 191000N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 : 17800 lbf /79000 N
Factors
K - Factor7 : 1.15
e - ISO Factor8 : 0.51
Y1 - ISO Factor9 : 1.33
Y2 - ISO Factor10 : 1.97
G1 - Heat Generation Factor (Roller-Raceway) ：820
G2 - Heat Generation Factor (Rib-Roller End)： 172
Cg - Geometry Factor11 : 0.139
