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The new EWN 2-50XL Boring Kit from BIG Kaiser Precision Tooling Inc. now offers a turnkey precision boring tooling solution for the diameter range of .700"-6.000" in its entirety. To make this new range possible with just one boring head, the engineers at KAISER came up with a new, rigid, dynamic center-mounted boring bar/insert holder capable of maintaining consistent precision throughout its full range.
Previously, center-mount boring bars were used to cover a max diameter of 2.125", and an outboard insert holder clamped to the side of the head covered 3.150"-6.000" in diameter. This left a significant gap of over 1" in diameter that could not be covered, and an additional head from the 310 series was needed to fulfill the full bore range to 6" in diameter. As a result, this new kit saves users nearly $2,000 when compared to the previous generation kit.
The tooling and carefully selected accessories come stored in a molded plastic carrying case with foam inlay to keep the components organized and protect the instruments when not in use.
Each kit includes: (1qty) Series 112 EWN 2-50XL finish boring head
(2qty) Center-mount steel boring bars & corresponding screw-on insert holders for diameters from .700"-3.150"
(3qty) Outboard insert holders for diameters from 3.150"-6.000"
(1qty) Coolant nozzle
(1qty) 10-pack of carbide coated TC11 inserts with a .016 nose radius (for general steel and cast iron)
(2qty) Wrenches
The EWN 2-50XL boring head features diameter adjustments of .0002"/div. Coolant through is standard with a max pressure of 300 PSI. When using the outboard insert holders – an included coolant nozzle inserts to the center of the head for direct coolant delivery to the cutting edge. The same outboard insert holders can simply be assembled in reverse to permit back boring.
If needed, the system is expandable for deep hole boring with carbide bars and diameters as small as .080″, and additional accessories can be ordered for super-fine balancing, OD turning and chamfering.
Related Glossary Terms
- boring
boring
Enlarging a hole that already has been drilled or cored. Generally, it is an operation of truing the previously drilled hole with a single-point, lathe-type tool. Boring is essentially internal turning, in that usually a single-point cutting tool forms the internal shape. Some tools are available with two cutting edges to balance cutting forces.
- boring head
boring head
Single- or multiple-point precision tool used to bring an existing hole within dimensional tolerance. The head attaches to a standard toolholder and a mechanism permits fine adjustments to be made to the head within a diameter range.
- chamfering
chamfering
Machining a bevel on a workpiece or tool; improves a tool’s entrance into the cut.
- coolant
coolant
Fluid that reduces temperature buildup at the tool/workpiece interface during machining. Normally takes the form of a liquid such as soluble or chemical mixtures (semisynthetic, synthetic) but can be pressurized air or other gas. Because of water’s ability to absorb great quantities of heat, it is widely used as a coolant and vehicle for various cutting compounds, with the water-to-compound ratio varying with the machining task. See cutting fluid; semisynthetic cutting fluid; soluble-oil cutting fluid; synthetic cutting fluid.
- outer diameter ( OD)
outer diameter ( OD)
Dimension that defines the exterior diameter of a cylindrical or round part. See ID, inner diameter.
- turning
turning
Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.
