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.
File Never Saved. Reopen Excel. Click on File in the upper-left hand corner of the screen. Then click Recent.. Select Recover Unsaved Workbooks.. This will display a list of any workbooks you worked on that were not saved.Select your file you were working on.iles Previously Saved. Open the document you were working on. Click File in the upper left-hand corner of the window. Click Info.. Under Versions, click the version labeled (when I closed without saving). Click Restore..