What does "KP" mean???

Group,

I'm looking at a German-made machine for a possible automation
project. Part of the machine is hydraulicly actuated. The label on
the hydraulic portion says 12000KP @ 10bar. (the "@" symbol was
really a German word, but it's safe to assume the "@" meaning). It's
an air over oil system so that label tells me that at an input air
pressure of 147psi I get an output of 12000KP. I don't know what
the 12000KP part means. For this label to mean anything other than a
measure of pushing force would not make much sense on this particular
machine.

I don't find any conversions from "KP" to force. Any ideas what this
means?

thanks,

Doug