7 Benefits of the Rotary Milling Cutter
-- Why it's the best milling cutter you can use
 1. The inserts rotate as they cut.
Rotary Milling Cutters feature round inserts, which are secured in interchangeable cartridges, and they rotate as they cut. That's right, the inserts rotate! This unique rotation of the insert creates a metal removal process, which is less destructive to inserts and provides greater cutting efficiency than conventional cutters. We call it "Roll Shearing" We're willing to bet you haven't seen any other cutting action that even comes close to its performance.
2. Faster cutting speeds allow faster feed rates.
Want to dramatically increase your cutting speed? With the Rotary Milling Cutter you can. Roll shearing replaces the 'bulldozing' of conventional milling cutters as the method of removing material. So now what have you got? The ability to move parts through at faster feed rates, which means reduced cycle times. But, we don't stop there! You can operate Rotary Milling Cutters at even higher cutting speeds by using silicon nitride. Silicon nitride has the ability to retain hardness at the elevated temperatures associated with high speed machining. Plus, our precision Rotary Cartridge, with its shock absorbing capability, cushions and protects the silicon nitride inserts as they enter the cut, making the Rotary Milling Cutter the only cutting tool to use silicon nitride to its maximum potential. Now you can achieve cutting speeds you never thought possible and boost productivity as a result.
 Cutting speeds dictate insert material.
Conventional tungsten carbide inserts work well within a limited range of operating speeds. However, beyond that point, they cannot contribute to higher productivity goals. In fact, because of edge breakdown due to increased operating temperatures at faster speeds, they can lower productivity in high volume operations.
3. Rotating inserts last longer
The rotation of the inserts continually introduces a fresh edge to the cut zone. This means heat is not permitted to build up as it does with conventional cutters and inserts. Most of the heat is transferred to the chips. The remaining heat is dissipated along the entire 3.340' (85mm) length of the cutting edge. As a result, in the right applications, you can expect at least a ten to one improvement in insert life and much less downtime for indexing.
4. Interrupted cuts are no problem
"Roll-Shearing" cutting action is much easier on the cutting edge. The inserts roll into the cut, loading the cartridge bearings, absorbing shock to the inserts as the cut begins. Your heavily interrupted parts won't cause premature insert failure. This tool just keeps on cutting and cutting and ...
5. Heat in the chip increases with efficiency
Once faster speeds are practical, some very positive and powerful factors begin to work together. Heat actually becomes an ally. At faster cutting speeds, the heat in the cut zone on the work piece concentrates in the chip (not the work piece or the insert cutting edge). The metal reaches the "plastic deformation" stage, causing the chip to flow freely, away from the work piece. The work piece surface actually remains cool to the touch. Energy usage is maximized, cutting efficiency increased. Less heat in the work piece means less distortion. You'll produce less scrap, more good parts.
 Taking the heat.
Which insert material is best? It depends on operating speed and temperature. We'll help you determine which insert material is the most cost effective for your application, the most productive trade-off between speed and insert costs.
6. "Roll-Shearing" Eliminates breakout in cast iron parts.
If you're cutting cast iron with conventional inserts, you know about breakout. The insert starts to wear, and all of a sudden, you're producing rejects. The traditional solution is to use a cutter with a large lead angle to thin the chip. But, our solution is better. The Rotary Milling Cutter, with its large diameter rotating insert, has a theoretically "continuous" lead angle. It eliminates breakout.
 Faster speeds reduce damaging forces.
It has been demonstrated that machining at high speeds reduces the force necessary to cut efficiently. By allowing your machines to operate at high spindle speeds, Rotary Milling Cutters minimizes the necessary cutting force. There's less wear and tear on machinery and less pressure on the work piece.
7. There's less wear and tear on your machinery
Rotary Milling Cutters make your day in other ways, too. Take tangential force as an example. It's one of the largest forces generated by the machining process. When conventional cutters are used, it's the primary cause of premature spindle bearing wear because of the side load it applies directly to the spindle bearing, thus, it is the major cause of rejects and downtime for equipment repair. The rotary motion of our insert virtually eliminates tangential force. Spindle bearings take far less punishment and last longer. Your equipment operates much longer between expensive spindle rebuilds.
 Productivity isn't a "cut and dried proposition." The uphill fight for greater productivity is now easier then ever. The unique cutting action of The Rotary Milling Cutter allows you to cut at faster speeds and turn out more parts per hour than any other milling cutter.
There's only one measure of productivity. It's used in your shop every day. You simply count the number of good parts produced by the end of the day, period. No theories. No flow charts. No excuses. Just count the parts.
And, you know what it takes to improve productivity. It's not complicated. You can machine more parts per hour (cut faster). Or, spend more time per shift making chips (minimize downtime). Simple, right? ... Now it is! Because, in a nut shell, The Rotary Milling Cutter is designed to help you do both - cut faster and minimize downtime.
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