Description
Timken 749 – 742 Specifications
Series |
745 |
Cone Part Number |
749 |
Cup Part Number |
742 |
Design Units |
Imperial |
Bearing Weight |
3.2 Kg7.2 lb |
Cage Type |
Stamped Steel |
Dimensions
d – Bore |
85.027 mm3.3475 in |
D – Cup Outer Diameter |
150.089 mm5.9090 in |
B – Cone Width |
46.673 mm1.8375 in |
C – Cup Width |
36.513 mm1.4375 in |
T – Bearing Width |
44.450 mm1.7500 in |
Abutment and Fillet Dimensions
| R – Cone Backface “To Clear” Radius1 | 3.560 mm0.14 in |
| r – Cup Backface “To Clear” Radius2 | 3.3 mm0.130 in |
da – Cone Frontface Backing Diameter |
95 mm4.46 in |
db – Cone Backface Backing Diameter |
101.09 mm3.98 in |
Da – Cup Frontface Backing Diameter |
142.00 mm5.63 in |
Db – Cup Backface Backing Diameter |
134.11 mm5.28 in |
Ab – Cage-Cone Frontface Clearance |
2 mm0.08 in |
Aa – Cage-Cone Backface Clearance |
1.3 mm0.05 in |
| a – Effective Center Location3 | -11.9 mm-0.47 in |
Basic Load Ratings
| C90 – Dynamic Radial Rating (90 million revolutions)4 | 21900 lbf97600 N |
| C1 – Dynamic Radial Rating (1 million revolutions)5 | 84700 lbf377000 N |
C0 – Static Radial Rating |
93800 lbf417000 N |
| Ca90 – Dynamic Thrust Rating (90 million revolutions)6 | 12200 lbf54400 N |
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