74512D - 74850产品参数
| 参数 | 数据 | 说明 |
|---|---|---|
| Series | 74000 | |
| Cone Part Number | 74512D | |
| Cup Part Number | 74850 | |
| Design Units | Imperial | |
| Bearing Weight | 31.7000 lb | |
| Bearing Weight | 14.4000 Kg | |
| Cage Type | Stamped Steel | |
| D - Cup Outer Diameter | 8.5000 in | |
| D - Cup Outer Diameter | 215.900 mm | |
| d - Cone Bore | 5.1250 in | |
| d - Cone Bore | 130.175 mm | |
| B - Double Cone Width | 4.0000 in | |
| B - Double Cone Width | 101.600 mm | |
| C - Cup Width | 1.3750 in | |
| C - Cup Width | 34.925 mm | |
| T - Bearing Width across Cups | 4.0000 in | |
| T - Bearing Width across Cups | 101.600 mm | |
| Z - Number of Rollers Per Row | 26 | |
| R - Cone Frontface "To Clear" Radius | 0.060 in | These maximum fillet radii will be cleared by the bearing corners. |
| R - Cone Frontface "To Clear" Radius | 1.50 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 | 5.75 in | |
| da - Cone Frontface Backing Diameter | 146.10 mm | |
| Db - Cup Backface Backing Diameter | 7.72 in | |
| Db - Cup Backface Backing Diameter | 196.10 mm | |
| Ab - Cage-Cone Frontface Clearance | 0.08 in | |
| Ab - Cage-Cone Frontface Clearance | 2.00 mm | |
| C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) | 22300 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. |
| C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) | 99000 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. |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) | 150000 lbf | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) | 665000 N | Based on 1 x 106 revolutions L10 life, for the ISO life calculation method. |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions) | 38800 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. |
| C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions) | 172000 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. |
| Ca90 - Dynamic Thrust Rating (90 million revolutions) | 18600 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) | 82600 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 | 1.2 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| e - ISO Factor | 1.09 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| Y1 - ISO Factor | 0.62 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| Y2 - ISO Factor | 0.92 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| G1 - Heat Generation Factor (Roller-Raceway) | 363 | These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use. |
| G2 - Heat Generation Factor (Rib-Roller End) | 68.5 | |
| Cg - Geometry Factor | 0.134 | Geometry constant for Lubrication Life Adjustment Factor a3l. |
