Specifications of TIMKEN Bearing 3979 - 3920-B
Specifications
| Series |
3900 |
| Cone Part Number |
3979 |
| Cup Part Number |
3920-B |
| Design Unit |
Inch |
| Bearing Weight |
3.1 lb1.4 Kg |
| Cage Material |
Stamped Steel |
Dimensions
| d – Bore |
2.25 in57.15 mm |
| D – Cup Outer Diameter |
4.4375 in112.713 mm |
| D1 – Flange Outer Diameter |
4.6210 in117.373 mm |
| B – Cone Width |
1.1830 in30.048 mm |
| C – Cup Width |
0.9375 in23.813 mm |
| C1 – Cup Flange Width |
0.1875 in4.763 mm |
| T1 – Bearing Width to Flange |
0.4375 in11.113 mm |
Abutment and Fillet Dimensions
| R – Cone Backface “To Clear” Radius1 |
0.14 in3.6 mm |
| r – Cup Backface “To Clear” Radius2 |
0.130 in3.3 mm |
| da – Cone Frontface Backing Diameter |
2.6 in66 mm |
| db – Cone Backface Backing Diameter |
2.83 in72 mm |
| Da – Cup Frontface Backing Diameter |
4.29 in108.97 mm |
| Ab – Cage-Cone Frontface Clearance |
0.08 in2 mm |
| Aa – Cage-Cone Backface Clearance |
0.06 in1.5 mm |
| a – Effective Center Location3 |
-0.18 in-4.6 mm |
