247 - 244X产品参数
| 参数 | 数据 | 说明 |
|---|---|---|
| Series | 245 | |
| Cone Part Number | 247 | |
| Cup Part Number | 244X | |
| Design Units | Imperial | |
| Bearing Weight | 0.6000 lb | |
| Bearing Weight | 0.3000 Kg | |
| Cage Type | Stamped Steel | |
| D - Cup Outer Diameter | 2.4375 in | |
| D - Cup Outer Diameter | 61.913 mm | |
| d - Cone Bore | 0.9843 in | |
| d - Cone Bore | 25.001 mm | |
| B - Cone Width | 0.7480 in | |
| B - Cone Width | 18.999 mm | |
| C - Cup Width | 0.6875 in | |
| C - Cup Width | 17.463 mm | |
| T - Bearing Width | 0.8275 in | |
| T - Bearing Width | 21.019 mm | |
| Z - Number of Rollers Per Row | 13 | |
| R - Cone Backface "To Clear" Radius | 0.080 in | These maximum fillet radii will be cleared by the bearing corners. |
| R - Cone Backface "To Clear" Radius | 2.030 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 | 1.18 in | |
| da - Cone Frontface Backing Diameter | 29.97 mm | |
| db - Cone Backface Backing Diameter | 1.32 in | |
| db - Cone Backface Backing Diameter | 33.53 mm | |
| Da - Cup Frontface Backing Diameter | 2.26 in | |
| Da - Cup Frontface Backing Diameter | 57.40 mm | |
| Db - Cup Backface Backing Diameter | 2.05 in | |
| Db - Cup Backface Backing Diameter | 52.07 mm | |
| Ab - Cage-Cone Frontface Clearance | 0.03 in | |
| Ab - Cage-Cone Frontface Clearance | 0.76 mm | |
| Aa - Cage-Cone Backface Clearance | 0.00 in | |
| Aa - Cage-Cone Backface Clearance | 0.00 mm | |
| a - Effective Center Location | -0.24 in | Negative value indicates effective center inside cone backface. |
| a - Effective Center Location | -6.10 mm | Negative value indicates effective center inside cone backface. |
| C90 - Dynamic Radial Rating (90 million revolutions) | 2810 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) | 12500 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) | 10800 lbf | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C1 - Dynamic Radial Rating (1 million revolutions) | 48200 N | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C0 - Static Radial Rating | 11100 lbf | |
| C0 - Static Radial Rating | 49200 N | |
| Ca90 - Dynamic Thrust Rating (90 million revolutions) | 1160 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) | 5170 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 | 2.42 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| e - ISO Factor | 0.24 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| Y - ISO Factor | 2.48 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| G1 - Heat Generation Factor (Roller-Raceway) | 12.8 | |
| G2 - Heat Generation Factor (Rib-Roller End) | 8.24 | |
| Cg - Geometry Factor | 0.0509 |
