81138 TIMKEN Double Direction Thrust Bearings
| Brand Name: | TIMKEN |
| Model Number: | 81138 |
| Series: | 3100 |
| Cone Part Number: | 3190 |
| Cup Part Number: | 3120 |
| Design Units: | Imperial |
| Bearing Weight: | 0.6 Kg |
| Cage Type: | Stamped Steel |
| d: | 30 mm |
| D: | 72.626 mm |
Product Details
| Series | 3100 |
| Cone Part Number | 3190 |
| Cup Part Number | 3120 |
| Design Units | Imperial |
| Bearing Weight | 0.6 Kg |
| Cage Type | Stamped Steel |
| d | 30 mm |
| D | 72.626 mm |
| B - Cone Width | 29.997 mm |
| C - Cup Width | 23.813 mm |
| B | 30.165 mm |
| R - Cone Backface To Clear Radius1 | 3.560 mm |
| r - Cup Backface To Clear Radius2 | 3.30 mm |
| da - Cone Frontface Backing Diameter | 38.10 mm |
| db - Cone Backface Backing Diameter | 44.45 mm |
| Da - Cup Frontface Backing Diameter | 67.10 mm |
| Db - Cup Backface Backing Diameter | 60.96 mm |
| Ab - Cage-Cone Frontface Clearance | 1.5 mm |
| Aa - Cage-Cone Backface Clearance | 0.8 mm |
| a - Effective Center Location3 | -10.2 mm |
| C90 - Dynamic Radial Rating (90 million revolutions)4 | 5520 lbf |
| C1 - Dynamic Radial Rating (1 million revolutions)5 | 21300 lbf |
| C0 - Static Radial Rating | 22800 lbf |
| Ca90 - Dynamic Thrust Rating (90 million revolutions)6 | 3140 lbf |
| K - Factor7 | 1.76 |
| e - ISO Factor8 | 0.33 |
| Y - ISO Factor9 | 1.8 |
| G1 - Heat Generation Factor (Roller-Raceway) | 23.4 |
| G2 - Heat Generation Factor (Rib-Roller End) | 8.8 |
| Cg - Geometry Factor | 0.0697 |