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Drive the keys down with several light hammer taps using the installation tool. If no installation tool is available, use a drive tool directly on the keys.

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Deep holes exist in a range of applications, across nearly every industry, each one with its own set of strict requirements and unique challenges, from tight tolerances to tough materials to high production goals.

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Drill and contour landing gear actuating cylinders while holding an extreme straightness tolerance in high-strength alloys.

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Drill holes at extreme depth-to-diameter ratios in long workpieces without sacrificing accuracy in roundness or wall thickness.

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The following examples are typical applications, processes, and tolerances, and although they are not actual part drawings, these are indicative of what is possible on UNISIG deep hole drilling machines with proper machine configuration, tooling, and process knowledge.

CARR LANE MANUFACTURING 4200 CARR LANE CT. P.O. BOX 191970 ST. LOUIS, MO 63119 Phone: 314.647.6200 Fax: 314.647.5736

Fuel rails require small straight holes, that won’t fail when under fuel pressure. Gundrilling is capable of achieving holes drilled to these strict tolerances.

Drill applicationtool

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Threaded inserts are ideal for reinforcing threads when a bolt or stud is frequently installed and removed. Using a threaded insert does not diminish a hole's hold strength.

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A series of holes is drilled in a block of steel for hydraulic fracturing equipment. A heavy workpiece and strict tolerances require capable machines and tools.

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Screw in the insert until its body is slightly (.010 to .030 inches) below the surface. This is performed either by hand or using the installation tool. Installation Keys act as a depth stop.

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The first step is to drill the right sized hole to support the threaded insert. If this is a new workholder, you will need to drill the correctly sized hole. If you are replacing old internal threads with a threaded insert, you will want to drill out those threads.

Trepan holes at extreme depth-to-diameter ratios in long workpieces without sacrificing accuracy in roundness or wall thickness.

High precision, high volume parts require multiple holes at extreme tolerances, achieved by a 3-spindle gundrilling center with robotic and conveyor automation.

Use the specified drill diameter and depth to drill out the locking key. Refer to product information to determine the correct drill size.

When used correctly, threaded inserts provide a strong, durable solution for threads within weaker materials. The use of threaded inserts can extend the life of a hole by using metal threads.

Just like installing, removing our threaded inserts is also a simple process. Below shows the steps of removing threaded inserts.

Threaded inserts can be installed with special installation tools, which come in handy to ensure a perfect installation. These installation tools serve both as a wrench to quickly thread the insert into its tapped hole as well as an impact tool for driving lock keys.

CARR LANE MANUFACTURING 4200 CARR LANE CT. P.O. BOX 191970 ST. LOUIS, MO 63119 Phone: 314.647.6200 Fax: 314.647.5736

Learn how to install these tooling components with or without these tools in this guide. Just follow the step-by-step instructions below.

Countersink diameter refers to the final diameter of the hole after drilling measured from the top of the service. This can range from 1/3 of an inch for a thinwall threaded insert to nearly two inches for a heavy duty threaded insert. You will want to refer to product tables to determine the correct countersink diameter for your application.

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