Beginning of feather key supporting length
| Symbol | dtr |
|---|---|
| Unit | mm |
| Attribute-ID | beginning_of_feather_key_supporting_length |
| Numeric ID | 17759 |
| Value Type | PMTechValue |
Case 1 - Only Feather key length is specified:
The load-bearing length calculated from this is taken as the load-bearing length of the shaft and the feather key. As load-bearing length of the hub the shorter length is taken from the calculated load-bearing length and the hub length.
Case 2 - Simultaneous specification of the feather key length and the load-bearing length:
The load-bearing length of the shaft and the feather key are calculated from the specified feather key length. The load-bearing length of the hub is the shortest length of the specified load-bearing length, the calculated load-bearing length and the hub length.
| a0 | Axial distance between load input and output points |
| a1 | Distance between hub face and load-bearing part of the feather key |
| bN | Total width of the hub |
| c | Width of the hub with diameter D2 within the load-bearing length |
| d | Shaft diameter |
| u | Beginning position of feather key geometry |
| uK | Beginning position of feather key supporting length |
| dtr | Distance between u and uK |
| lPF | Length of the feather key |
| ltr | Load bearing length of the feather key |
| D1 | Small external diameters for stepped hub |
| D2 | Large external diameter for stepped hub |
| BND1 | Width of the hub for D1 |
| BND2 | Width of the hub for D2 |
| Fu | Circumferential force |
| T | Torsional moment |
| - - - | Part of the feather key connection in the power flow |