When I was starting out with pillar drills, I discovered every one of the terms for the different components and also measurements actually perplexing. This post is developed in order to help you if you are aiming to pick a drill and also should comprehend exactly what all the terms and also lingo means.

Parts Found on Pillar Drills

Pierce head— the setting up that makes up the chuck, pin, drill bit, motor and also wheels.


Base— the heavy “foot” of the machine that is bolted to the floor in the case of a bigger pillar drill or the workbench when it comes to a smaller bench-mounted drill.

Column— this is the upright column that offers the pillar drill among its names (confusingly, its various other common names are “bench drill” and “pierce press”).

Pin— the upright axle that remains in line with the drill bit and also links the chuck to the drill head.

Chuck— the assembly that fits into the spindle and also holds the drill bit.

Table— this is often little bit more than a walk in smaller bench drill designs. It’s the assistance for the job item to be pierced, and also is attached to the column some distance listed below the head and also above the base. Tables can be rectangular or round, and also some can be tilted to allow tilted exploration via a work item. Pillar drill accessories can be acquired to secure or cradle work pieces in different angles.


Depth gauge— a setting that enables the bench drill to pierce an opening part-way via a work piece.

The Significance of Dimensions in Drill Requirements

Throat distance— this is the measurement from the local side of the pillar to the pin centre.


Swing— this is a common denominator of the ability of column drills as well as is defined as two times the throat range, or to put it one more method, the optimum dimension of disc where you could pierce a main opening.

Spindle taper— this defines the form of completion of the pin. There are long, short, female as well as male kinds. The chuck needs to be compatible with the pin taper.


Collar Size— this is the outer size of the collar or chuck assembly that holds the bit.

Chuck size— this is the size of the inner opening of the chuck assembly, so it specifies the optimum size of bit stem that the drill can take. Because of this it is also recognized merely as the drilling ability.


Spindle traveling— this is the amount by which the spindle can be lowered or elevated vertically as well as specifies the optimum depth of hole you can pierce in one pass.

Maximum range spindle-to-table— this range specifies the inmost work piece that you can get onto the table.


Optimum distance spindle-to-base— this is similar to the above and also defines the maximum depth of work piece you can drill with the table eliminated.

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