27881 - 27820产品参数
| 参数 | 数据 | 说明 |
|---|---|---|
| Series | 27800 | |
| Cone Part Number | 27881 | |
| Cup Part Number | 27820 | |
| Design Units | Imperial | |
| Bearing Weight | 1.200 lb | |
| Bearing Weight | 0.600 Kg | |
| Cage Type | Stamped Steel | |
| D - Cup Outer Diameter | 3.1510 in | |
| D - Cup Outer Diameter | 80.035 mm | |
| d - Cone Bore | 1.5000 in | |
| d - Cone Bore | 38.100 mm | |
| B - Cone Width | 0.9330 in | |
| B - Cone Width | 23.698 mm | |
| C - Cup Width | 0.7288 in | |
| C - Cup Width | 18.512 mm | |
| T - Bearing Width | 0.9688 in | |
| T - Bearing Width | 24.608 mm | |
| Z - Number of Rollers Per Row | 18 | |
| R - Cone Backface "To Clear" Radius | 0.140 in | These maximum fillet radii will be cleared by the bearing corners. |
| R - Cone Backface "To Clear" Radius | 3.560 mm | These maximum fillet radii will be cleared by the bearing corners. |
| r - Cup Backface "To Clear" Radius | 0.060 in | These maximum fillet radii will be cleared by the bearing corners. |
| r - Cup Backface "To Clear" Radius | 1.52 mm | These maximum fillet radii will be cleared by the bearing corners. |
| da - Cone Frontface Backing Diameter | 1.85 in | |
| da - Cone Frontface Backing Diameter | 46.99 mm | |
| db - Cone Backface Backing Diameter | 2.09 in | |
| db - Cone Backface Backing Diameter | 53.09 mm | |
| Da - Cup Frontface Backing Diameter | 2.99 in | |
| Da - Cup Frontface Backing Diameter | 75.90 mm | |
| Db - Cup Backface Backing Diameter | 2.68 in | |
| Db - Cup Backface Backing Diameter | 68.07 mm | |
| Ab - Cage-Cone Frontface Clearance | 0.06 in | |
| Ab - Cage-Cone Frontface Clearance | 1.52 mm | |
| Aa - Cage-Cone Backface Clearance | 0.13 in | |
| Aa - Cage-Cone Backface Clearance | 3.30 mm | |
| a - Effective Center Location | -0.10 in | Negative value indicates effective center inside cone backface. |
| a - Effective Center Location | -2.50 mm | Negative value indicates effective center inside cone backface. |
| C90 - Dynamic Radial Rating (90 million revolutions) | 4550 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) | 20200 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) | 17500 lbf | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C1 - Dynamic Radial Rating (1 million revolutions) | 78000 N | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C0 - Static Radial Rating | 20500 lbf | |
| C0 - Static Radial Rating | 91100 N | |
| Ca90 - Dynamic Thrust Rating (90 million revolutions) | 4370 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) | 19400 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 | 1.04 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| e - ISO Factor | 0.56 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| Y - ISO Factor | 1.07 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| G1 - Heat Generation Factor (Roller-Raceway) | 24.6 | |
| G2 - Heat Generation Factor (Rib-Roller End) | 12.6 | |
| Cg - Geometry Factor | 0.0839 |
