59,53 mm x 112,712 mm x 30,048 mm Timken 3978/3920 tapered roller bearings
59,53 mm x 112,712 mm x 30,048 mm Timken 3978/3920 tapered roller bearings Deal is New energy Bearing Manufacturing Co., Ltd your source for OEM 59,53 mm x 112,712 mm x 30,048 mm Tapered Roller Bearings and accessories. We sell GenuineTapered Roller Bearings at discount prices.
What is 3978/3920 bearing cross reference？
| Brand Name |
Timken |
| Model Number |
3978/3920 |
| Min.Order Quantity |
1 pcs |
| Price |
Negotiable |
| PDF |
3978/3920 |
Product Details
| Series | 28000 |
| Cone Part Number | 28156 |
| Cup Part Number | 28300X |
| Design Units | Imperial |
| Bearing Weight | 0.4 Kg |
| Cage Type | Stamped Steel |
| d | 39.980 mm |
| D | 76.2 mm |
| B - Cone Width | 19.649 mm |
| C - Cup Width | 15.494 mm |
| B | 19.332 mm |
| R - Cone Backface To Clear Radius1 | 2.290 mm |
| r - Cup Backface To Clear Radius2 | 1.52 mm |
| da - Cone Frontface Backing Diameter | 44.96 mm |
| db - Cone Backface Backing Diameter | 49.02 mm |
| Da - Cup Frontface Backing Diameter | 71.88 mm |
| Db - Cup Backface Backing Diameter | 68.07 mm |
| Ab - Cage-Cone Frontface Clearance | 1.8 mm |
| Aa - Cage-Cone Backface Clearance | 0.3 mm |
| a - Effective Center Location3 | -3.6 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 4390 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 16900 lbf |
| C0 - Static Radial Rating | 15500 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 3020 lbf |
| K - Factor7 | 1.45 |
| e - ISO Factor8 | 0.4 |
| Y - ISO Factor9 | 1.49 |
| G1 - Heat Generation Factor (Roller-Raceway) | 20.7 |
| G2 - Heat Generation Factor (Rib-Roller End) | 12.5 |
| Cg - Geometry Factor | 0.0709 |
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