Series - 25500
Cone Part Number - 25580
Cup Part Number - 25520
Design Unit Inch
Cage Material Stamped Steel

Dimensions
d - Bore 1 3/4 in / 44.450 mm
D - Cup Outer Diameter 3.2650 in / 82.931 mm
B - Cone Width 1 in / 25.4 mm
C - Cup Width 0.7500 in / 19.050 mm
T - Bearing Width 0.9375 in / 23.813 mm

Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 0.14 in / 3.600 mm
r - Cup Backface "To Clear" Radius2 0.03 in / 0.76 mm
da - Cone Frontface Backing Diameter 1.97 in / 50 mm
db - Cone Backface Backing Diameter 2.24 in / 57.0 mm
Da - Cup Frontface Backing Diameter 3.05 in / 77.00 mm
Db - Cup Backface Backing Diameter 2.91 in / 73.91 mm
Ab - Cage-Cone Frontface Clearance 0.06 in / 1.5 mm
Aa - Cage-Cone Backface Clearance 0.01 in / 0.3 mm
a - Effective Center Location3 -0.25 in / -6.4 mm

Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)4 - 5270 lbf / 23500 N
C1 - Dynamic Radial Rating (1 million revolutions)5 - 20300 lbf / 90500 N
C0 - Static Radial Rating - 24900 lbf / 111000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 3020 lbf / 13500 N

Factors
K - Factor7 - 1.74
e - ISO Factor8 - 0.33
Y - ISO Factor9 - 1.79
G1 - Heat Generation Factor (Roller-Raceway) 35.2
G2 - Heat Generation Factor (Rib-Roller End) 14.3
Cg - Geometry Factor10 0.0801