Large Thru Bore

What is the purpose of a Large Thru Bore?

The thru bore in a rotary table is important if you need to pass a part or fixturing thru the center bore of the rotary table. Most brand of rotary tables offer standard and oversize thru holes to allow for this feature. Rotary table models can be configured to allow for the thru hole while other models have the servomotor enclosure mounted in the rear of the unit blocking the thru bore. One issue with a large thru bore table is selecting a chuck that has the large thru bore without having too large of an outside diameter. Technitron offers the 3 and 4 jaw chucks for the large bore rotary tables to meet most application requirements.

Example of a Rotary Table with a Large Thru Bore Installed on a VMC Machine

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