What is backlash in gear terms? The term backlash is defined as the amount by which a tooth space exceeds the thickness of a gear tooth engaged in mesh. It is necessary to ensure the smooth rotation of meshed gears. The following extract is from the KHK Gear Catalogue* which details the types of backlashes, the relationships between backlashes and the fundamental equations, as well as easy-to-understand illustrations of how it all works.
Don't panic and discover below how to recover an unsaved file. 1  Go to FILE -> Open. 2  Choose Recent Workbooks. 3  Scroll down and click on the Recover Unsaved Workbooks button at the bottom of the list. Note.  When the Open dialog box pops up, just select the necessary file and click Open.
Excel provides us with such good features as AutoSave and AutoRecover. If they are enabled, it won't be a problem for you to recover unsaved files and restore previous versions in Excel 2010 - 2013.f you want to know how to retrieve an overwritten Excel file, go ahead and read this article. 1  Excel AutoSave and AutoRecover. 2  How to recover unsaved files in Excel. 3  Recover overwritten Excel files. 4  How to save a backup copy of your workbook.