what does the word addendum mean in contents preload: 1.5 to 2.0 kgm (with pinion engaged) (addendum of gear : 9 to 12 kg )
In terms of machinery this is the definition from the dictionary:
Addendum in Machinery :a. the radial distance between the tip of a gear tooth and the pitch circle of a gear or the pitch line of a rack. Compare dedendum( the root of a gear tooth) this is a link for a diagram : http://www.raynerd.co.uk/images/cuttt1.jpg
b.Also called addendum circle. an imaginary circle touching the tips of the teeth on a gear.
I hope this is helpful.