The NC drill chuck incorporates an internal captive design or 'solidifying' bolt system which 'in effect' allows the base holder and drill chuck to precisely become one. This internal design allows the assembly to be considerably shorter and when combined with the compact head the system proves incredibly versatile.
Competitor systems adopting the 'Jacobs' style interface in their design are unreliable and not particularly ideal for unmanned nor precision applications. The 'Jacobs' system features only a taper for the location of the drill chuck and for higher speed or heavy duty applications can detach from the base holder.
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