e/Angle of pressure

Information
has gloss	eng: Pressure angle is in general the angle at a pitch point between the line of pressure which is normal to the tooth surface, and the plane tangent to the pitch surface. The pressure angle gives the direction of the normal to the tooth profile. The pressure angle is equal to the profile angle at the standard pitch circle and can be termed the “standard” pressure angle at that point. Standard values include 14.5, 20 and 25 degrees. For a given material, smaller pressure angles correlate with weaker teeth. To run gears together properly one must match pressure angles.
lexicalization	eng: Angle of pressure
instance of	(noun) a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion gear wheel, geared wheel, gear, cogwheel

Media
media:img	Pressure profile.jpg