Specifications of TIMKEN Bearing 3478 - 3420-B
Specifications
| Series |
3400 |
| Cone Part Number |
3478 |
| Cup Part Number |
3420-B |
| Design Unit |
Inch |
| Bearing Weight |
2 lb0.9 Kg |
| Cage Material |
Stamped Steel |
Dimensions
| d – Bore |
1.375 in34.925 mm |
| D – Cup Outer Diameter |
3.125 in79.375 mm |
| D1 – Flange Outer Diameter |
3.3090 in84.049 mm |
| B – Cone Width |
1.1721 in29.771 mm |
| C – Cup Width |
0.9375 in23.813 mm |
| C1 – Cup Flange Width |
0.1875 in4.763 mm |
| T1 – Bearing Width to Flange |
0.4063 in10.320 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 |
1.71 in43.5 mm |
| db – Cone Backface Backing Diameter |
1.97 in50 mm |
| Da – Cup Frontface Backing Diameter |
3.03 in75.95 mm |
| Ab – Cage-Cone Frontface Clearance |
0.05 in1.3 mm |
| Aa – Cage-Cone Backface Clearance |
0.04 in1 mm |
| a – Effective Center Location3 |
-0.34 in-8.6 mm |
