Specifications of TIMKEN Bearing 78251D - 78537
Specifications
Series |
78000 |
Cone Part Number |
78251D |
Cup Part Number |
78537 |
Design Unit |
Inch |
Bearing Weight |
1.2 lb0.5 Kg |
Cage Material |
Stamped Steel |
Dimensions
d – Bore |
2.5 in63.5 mm |
D – Cup Outer Diameter |
5.3750 in136.525 mm |
B – Double Cone Width |
2.5980 in65.989 mm |
C – Cup Width |
0.9260 in23.520 mm |
T – Bearing Width across Cups |
2.6020 in66.091 mm |
Abutment and Fillet Dimensions
R – Cone Backface “To Clear” Radius1 |
0.09 in2.3 mm |
r – Cup Backface “To Clear” Radius2 |
0.130 in3.3 mm |
da – Cone Frontface Backing Diameter |
3.11 in79 mm |
Db – Cup Backface Backing Diameter |
4.53 in115.06 mm |
Ab – Cage-Cone Frontface Clearance |
0.08 in2 mm |
Basic Load Ratings
C90 – Dynamic Radial Rating (One-Row, 90 million revolutions)3 |
9970 lbf44300 N |
C1 – Dynamic Radial Rating (Two-Row, 1 million revolutions)4 |
66900 lbf298000 N |
C90(2) – Dynamic Radial Rating (Two-Row, 90 million revolutions)5 |
17400 lbf77200 N |
Ca90 – Dynamic Thrust Rating (90 million revolutions)6 |
14800 lbf65700 N |