Reaching Or Surpassing OEM Specs
Uncover The Fundamental Roll Grinding Factors
Your production quality, efficiency and product uniformity are greatly impacted by the way in which your rolls are ground. Over time, this process has an enormous effect on your bottom line – potentially in the form of millions of dollars.
Why? Because roll defects stemming from imperfect grinding and loose tolerances cause production inefficiencies and hamper the quality of your product. Specs that would be appropriate for equipment running at design speed no longer suffice. If you’re running machines faster, you need rolls with tighter tolerances than the original specifications.
But, how do you reach or exceed OEM specifications and meet the exact tolerances to manufacture a quality, consistent product? After all, it’s not just your products at stake – it’s also the life of your rolls and covers.
Prerequisites For Precision Grinding
There are a number of factors that go into performing proper, precise roll grinding. The foundation is CNC grinding, which relies on computers instead of people to meet the exact tolerances that your rolls need. Though we are capable of doing so without CNC, a CNC grinder helps you produce a better product and maximize your manufacturing efficiency.
That said, there are various conditions that affect the grinding of your rolls:
- Ensuring proper setup: To fix the defects in your rolls, it is essential for bearings and housings to be removed. If you try to grind a roll without removing these components, it will be moving during the process, leaving your rolls with imperfections that you can’t afford to overlook.
- Considering the grinding environment. Because many rolls operate under a temperature that’s hot enough to change its shape (especially those run at over 285 degrees F), it may be critical that the roll also be ground at that temperature. Precision grinding happens in a temperature-controlled environment that ensures uniformity in the profile, roundness and concentricity of your rolls. Especially if your rolls are used to manufacture products that require minimal caliper variation and exceptional surface uniformity, this grinding environment is paramount.
- Securing the position of the crown. The last aspect to consider is that a roll with a perfect surface but incorrect crown positioning is not going to produce the quality products your customers demand. To be in-spec, the crown must be perfectly centered on a roll. Believe it or not, many roll grinders find this difficult to achieve.
With the proper grinding setup, appropriate environment and precise crown positioning, your rolls are equipped to produce a high-quality product – and stimulate a larger profit for your bottom line.
Click below to learn more about precision roll grinding and how achieving proper tolerances extends the life of your rolls, increases your productivity and helps you produce high-quality products.