Old Small Jaw Crushers Delap. Small Jaw Crusher 911metallurgist. The 911mpejac23 is a small jaw crusher of 225 x 3 manufactured to easily crush any rock from 2 50mm down to a d50 of 700 micron 28 mesh which also correspond to a crushed discharge p80 size of 80 passing 1400 microns or 14 mesh the discharge opening closedsidesetting of this 55 mm x 75 mm bigsmall crusher you can adjusted .