Gear Mating - Profile Correction Factor

If the gears' profiles do not match, the gears will:

• be noisy
• have excessive wear
• be inefficient (waste energy in the meshing)
• eventually fail

A proper gear mating will have a large contact area and simply roll to push the other gear.

"pressure angle 20Degree"

The gear alignment must respect the pressure angle, or the meshing gear must compensate and have a coinciding angle.

http://www.mech.uwa.edu.au/DANotes/gears/meshing/meshing.html

The total Profile correction is always constant ( We use 1, ie,. x1 + x2=1) based on calculation. Try to download Kisssoft its a gear design software you can get the trial version @ http://www.kisssoft.ch/english/demo.htm its a simple software where you can give the basic gear details and it will give you all the gear details you can decide on the coprrection for pinion and it will automatically adjust the correctioin for gear keeping the total correction constant.

You cannot mate two gears which have not been designed to be together as techno said it will be inefficient.

You can mate them, but you have to calculate a new center distance. Only a note to your data. The profile correction normally must be between x=-0.5 and x=0.8. Lower values reduce the endurance and upper ones have the risk to not finish the teeth in their external diameter.

Generally, when one has such a big coefficient of profile shift, it is an indication that undercut is that much present in the pair. Usually, undercut is more prevalent in the pinion since it is the one having lesser number of teeth. So the distribution of coefficient of profile shift is first alloted to the pinion till the point of prevention of undercut and the rest is alloted to the gear. In which case you cannot have a zero profile shift pinion to mate with x=1.125 (positively profile shifted) gear.

I think you should go to web pages www.sdp-si.com to get more information.