
| Part Number | 3920 |
| Brand: BearingMaker | Interchangeable With: Timken |
| System of Measurement | Inch |
| Roller Bearing Type | Tapered |
| Type | Cups |
| Bearing Part Number |
3955-3920 , 3958-3920 , 3960-3920 , 3975-3920 , 3977-3920 , 3977X-3920 , 3978-3920 , 3979-3920 , 3980-3920 , 3981-3920 , 3982-3920 , 3982W-3920 , 3982X-3920 , 3984-3920 , 3992-3920 , 3994-3920 , 3977-3920-B , 3979-3920-B , 3980-3920-B , 3981-3920-B , 3982-3920-B , 3984-3920-B |
| Cups Type | Standard |
| Series | 3900 |
| Outer Dia | 4.4375″ |
| Outer Dia Tolerance | +0.001″ to 0 |
| Cup Width | 0.9375″ |
| Cup Width Tolerance | +0.002″ to -0.01 |
| Cup Backface ToClear Radius | 0.13″ |
| Cup Frontface Backing Diameter | 4.18″ |
| Cup Backface Backing Diameter | 3.90″ |
| Ring Material | Chrome Steel |
| Temperature Range | -30° to 110 °C |
| ABEC Rating | ABEC-1 |
| RoHS | Compliant |
| REACH | Compliant |









