Hi,

I've been reading this forum for a while now. Lots of knowledge people here. I was wondering if any of you had used or had any views on the KR actuators from THK?

I can get a used THK KR55 with 680 travel (2 blocks) or 800 (if I remove 1 blocks) for a fair price. I was thinking of using it for the X axis, on a machine that will occasional use pretty large router bits, primarily on hardwood. The lead is 20, so it's going to need some torque to shift it I guess.

My main reservation is not knowing how to compare the permissible loads on one KR block vs two rails and four blocks (well spaced).

Any advice appreciated.