2878 - 2820产品参数
| 参数 | 数据 | 说明 |
|---|---|---|
| Series | 2800 | |
| Cone Part Number | 2878 | |
| Cup Part Number | 2820 | |
| Design Units | Imperial | |
| Bearing Weight | 1.0000 lb | |
| Bearing Weight | 0.4000 Kg | |
| Cage Type | Stamped Steel | |
| D - Cup Outer Diameter | 2.8750 in | |
| D - Cup Outer Diameter | 73.025 mm | |
| d - Cone Bore | 1.3750 in | |
| d - Cone Bore | 34.925 mm | |
| B - Cone Width | 0.9375 in | |
| B - Cone Width | 23.813 mm | |
| C - Cup Width | 0.6875 in | |
| C - Cup Width | 17.463 mm | |
| T - Bearing Width | 0.8750 in | |
| T - Bearing Width | 22.225 mm | |
| Z - Number of Rollers Per Row | 17 | |
| R - Cone Backface "To Clear" Radius | 0.030 in | These maximum fillet radii will be cleared by the bearing corners. |
| R - Cone Backface "To Clear" Radius | 0.760 mm | These maximum fillet radii will be cleared by the bearing corners. |
| r - Cup Backface "To Clear" Radius | 0.130 in | These maximum fillet radii will be cleared by the bearing corners. |
| r - Cup Backface "To Clear" Radius | 3.30 mm | These maximum fillet radii will be cleared by the bearing corners. |
| da - Cone Frontface Backing Diameter | 1.61 in | |
| da - Cone Frontface Backing Diameter | 40.89 mm | |
| db - Cone Backface Backing Diameter | 1.65 in | |
| db - Cone Backface Backing Diameter | 41.91 mm | |
| Da - Cup Frontface Backing Diameter | 2.72 in | |
| Da - Cup Frontface Backing Diameter | 68.10 mm | |
| Db - Cup Backface Backing Diameter | 2.48 in | |
| Db - Cup Backface Backing Diameter | 62.99 mm | |
| Ab - Cage-Cone Frontface Clearance | 0.01 in | |
| Ab - Cage-Cone Frontface Clearance | 0.25 mm | |
| Aa - Cage-Cone Backface Clearance | 0.04 in | |
| Aa - Cage-Cone Backface Clearance | 1.02 mm | |
| a - Effective Center Location | -0.22 in | Negative value indicates effective center inside cone backface. |
| a - Effective Center Location | -5.60 mm | Negative value indicates effective center inside cone backface. |
| C90 - Dynamic Radial Rating (90 million revolutions) | 4260 lbf | Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values. |
| C90 - Dynamic Radial Rating (90 million revolutions) | 19000 N | Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values. |
| C1 - Dynamic Radial Rating (1 million revolutions) | 16400 lbf | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C1 - Dynamic Radial Rating (1 million revolutions) | 73200 N | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C0 - Static Radial Rating | 18800 lbf | |
| C0 - Static Radial Rating | 83800 N | |
| Ca90 - Dynamic Thrust Rating (90 million revolutions) | 2690 lbf | Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value. |
| Ca90 - Dynamic Thrust Rating (90 million revolutions) | 12000 N | Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value. |
| K - Factor | 1.59 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| e - ISO Factor | 0.37 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| Y - ISO Factor | 1.63 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| G1 - Heat Generation Factor (Roller-Raceway) | 23.1 | |
| G2 - Heat Generation Factor (Rib-Roller End) | 12.4 | |
| Cg - Geometry Factor | 0.0718 |
