Base
The base provides a stable foundation for the mill. It usually has mounting holes for leveling and attachment to the floor.
![](http://toolnotes.com/wp-content/uploads/2019/06/Base.jpg)
Knee Lead Screw Housing
The knee rests on a lead screw that is attached to the base. This provides vertical travel for the knee, and in turn, the table.
![](http://toolnotes.com/wp-content/uploads/2019/06/knee-lead-screw-housing.jpg)
Column
The column is the primary structural element of the knee mill. It is usually a large casting that into which several features are integrated.
![](http://toolnotes.com/wp-content/uploads/2019/06/column.jpg)
Ways
The ways are precision guides that allow the column to be moved vertically in a controlled manner. Ways can take different configurations, such as box ways, dovetail ways, and v-ways.
![](http://toolnotes.com/wp-content/uploads/2019/06/Ways.jpg)
Turret
Some mills include a turret that enables the ram to swivel about the vertical axis of the machine.
![](http://toolnotes.com/wp-content/uploads/2019/06/turret.jpg)
Ram Locks
Ram locks clamp the ram into position for use.
![](http://toolnotes.com/wp-content/uploads/2019/06/Ram-Locks-1024x673.jpg)
Ram adjusting handle
The ram is positioned by turning the ram adjusting handle. The handle is usually connected to a pinion gear that moves a rack attached to the ram.
![](http://toolnotes.com/wp-content/uploads/2019/06/Ram-Adjusting-Handle-1024x669.jpg)
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