So this is for you:
17 mm from center to back, but at 84mm length, they also have one with 47mm length.
I don’t have the exact dimensions on the bottom plate but my guess would be 1-2 mm deeper then the 80mm mount, as I have illustrated here in green. If someone upload a dfx of the bottom plate I will draw it up.
The router is taken from Sorotec website and should be a very nice router 4000-25000 rpm also with 0-10V pwm:
And just to be clear, I have nothing to do with any of the companies, or any other company for thats sake as I’m retired, haha.
Enjoy