1270 Agricola Drive, Saginaw, Michigan 48604 USA 989.752.3077 | Toll Free: 877.308.3077sales@universaldevlieg.com

1270 Agricola Drive, Saginaw, Michigan 48604 USA

Ph: 989.752.3077 | Toll Free:877.308.3077


Universal Engineering / Devlieg Microbore

Universal/Devlieg Inc.

Tips for the Best Boring Results

Boring is a different process from other hole making machining operations, such as drilling and reaming. Drilling is making an initial hole and reaming smooths out the walls of an existing hole. Boring is used to produce accurate size holes within required tolerance specifications using an existing pre-drilled hole. The following are some tips to assure your boring project meets your specifications.


An operator can perform boring with a lathe, mill or machines specific to boring like jig bores, boring machines, or boring mills. Generally, lathe boring operations are less complex and offer more flexibility than boring with a mill.


Chatter, or a vibration, is common during the boring processes. However, it can cause a quality concern. When you minimize chatter, you get better productivity and surface finishes. Using boring bars and boring heads made from heavier materials can suppress chatter. Additionally, tooled steel, carbide, or tungsten tools will last longer than the less costly steel option.


It is recommended to use boring heads on a milling machine for larger holes with tight tolerances. The hole size range is set by the boring head. To adjust the hole size, you need to change the boring head size. This makes boring processes on mills more complicated, though more precise, than those on lathes.


Boring bars are used for both milling and lathe operations. Deeper holes need a longer bore than a shallow hole, so the length of the boring bit is critical. Boring bars can create any size hole if the bar fits in the hole. This feature makes boring bars a more flexible option than boring heads because you can achieve different size bores with the same bar.

Universal DeVlieg provides innovative and cost-cutting tool holding and high precision boring solutions to the machine tool industry, servicing a diversified customer base. The combination of over 32,000 active part numbers, over 10,000 standard items, and our technical support staff deliver design engineering expertise that is unmatched in the industry. To learn more about Universal DeVlieg, contact us This email address is being protected from spambots. You need JavaScript enabled to view it. or 877.308.3077 or visit at universaldevlieg.com.