I need to use this in pcb
http://www.mouser.com/ds/2/295/kp01-15295.pdf

I can't find this part libary file
how to design this?

I can't understand mechanical data they have given?

if I can find pcb package of it in the internet very helpful

 

This is not a particularly common part so there's probably not much chance of finding an eagle library for it but there are eagle library creation tutorials online I'm sure, it's not a particularly difficult layout, you'll have to make it yourself I'm afraid.