Specifications of TIMKEN Bearing 28138 - 28318D
Specifications
Series |
28000 |
Cone Part Number |
28138 |
Cup Part Number |
28318D |
Design Unit |
Inch |
Bearing Weight |
2.25 lb1.023 Kg |
Cage Material |
Stamped Steel |
Dimensions
d – Bore |
1.3770 in34.976 mm |
D – Cup Outer Diameter |
3.1510 in80.035 mm |
B – Cone Width |
0.8244 in20.940 mm |
C – Double Cup Width |
1.3750 in34.925 mm |
T – Bearing Width across Cones |
1.8126 in46.040 mm |
Abutment and Fillet Dimensions
R – Cone Backface “To Clear” Radius1 |
0.06 in1.5 mm |
r – Cup Backface “To Clear” Radius2 |
0.03 in0.8 mm |
db – Cone Backface Backing Diameter |
1.71 in43.5 mm |
Da – Cup Frontface Backing Diameter |
2.91 in73.90 mm |
Aa – Cage-Cone Backface Clearance |
0.06 in1.5 mm |
a – Effective Center Location3 |
-0.19 in-4.8 mm |
Basic Load Ratings
C90 – Dynamic Radial Rating (One-Row, 90 million revolutions)4 |
3700 lbf16500 N |
C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)5 |
24800 lbf111000 N |
C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)6 |
6440 lbf28700 N |
Ca90 – Dynamic Thrust Rating (90 million revolutions)7 |
2550 lbf11300 N |