boring head

The finest materials and craftsmanship combine to provide strength, flexibility and accuracy in uniquely designed tool. Hardened and ground shanks.

The S-3 boring head is the forerunner of all Criterion models. With the exception of the bar holder, this unit has changed little in the past 60 years. Its practical simplicity and proven performance have consistently made it a big seller in the Criterion line. The advantages of a square design are…

Set handles many boring needs. All steel head and nine boring bars. Head is USA made with standard 1/2-inch tooling capacity, direct read .001 micrometer dial, and hardened construction. Imported boring bars have carbide tips and hardened and ground shanks and include stand.

Direct read .001-inch micrometer dial. Precision hardened steel.

Heads feature direct read .001 micrometer dial, precision hardened steel construction and boring capacity to 4 inches. Sets consist of head and PB500 10-piece, 1/2-inch shank carbide tipped boring bar set in 5/16- (standard), 7/16- (medium) and 9/16-inch (long) lengths. Includes storage case.

Performs equally in heavy roughing cuts on turrets or fine finishing work on mills and jig borers. All bearing surfaces are ground after hardening for long life and trouble free operation. Shanks are available; please contact us for details.

The forerunner of all APT heads. Except for bar holder, unit has changed little. Its practical simplicity and proven performance have consistently made it a big seller. Advantages of a square design are seen in the extremely wide base and 1-inch hole capacity for boring bars and tools. Enhanced with…

* Simple, extremely rigid construction* Hardened and ground shanks* One each centered and offset vertical boring tool holes* Cross hole for greater versatility and capacity* Dependable adjustment* For spread, .001-inch graduations for closer readings* Perfectly balanced for high speed operations

* Precision bored and honed milling head* Chromed large diameter quill* High-precision spindle bearings* Over 10 inches of front-to-back ram travel* Locks on table, knee and saddle* Precision ground table* Head tilts left or right* Graduated scale on column* Precision ground dovetail* One-shot…

Standard 1/2-inch tooling capacity. Direct reading .001 micrometer dial. Hardened steel and entirely manufactured in the U.S. Boring capacity of up to 4 inches net of 1/2 cross hole capacity.

Use with APT precision boring heads. Interchangeable.

Fits all heads with 1-1/2 - 18 threaded backs.