Ball Screw
Ball Screw |
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The user can select a Support type in the Ball Screw Mechanism form including:
The Support type selection is only used for the lifetime calculation for a Ball Screw product selected in the database.
| Symbol | Description | Units |
|---|---|---|
| JDM | Inertia of drive mechanism | kg-m2 |
| TDM | Torque of drive mechanism | Nm |
| aDM | Rotational acceleration | rad/s2 |
| h | Efficiency of drive mechanism | 1 |
| q | Incline angle above horizontal | o |
| g | Acceleration due to gravity = 9.81 | m/s2 |
| P | Screw pitch | rev/m |
| m | Slide friction coefficient | |
| FThrust | Thrust force at load | N |
| mLoad | Mass of load + payload | kg |
| mCB | Mass of counterbalance | kg |
| MSlide | Mass of slide | kg |
| MNut | Mass of nut | kg |
| JNut | Inertia of nut | kg-m2 |
| JScrew | Inertia of screw | kg-m2 |
| JCoupling | Inertia of coupling | kg-m2 |