Container trimming apparatus

A can trimmer apparatus comprising:

• a sealed outer housing;
• a removable power connection on the exterior of and extending through the housing, wherein said power connection is operatively and removably connected to a first shaft;
• a first rotating blade mounted on the first shaft;
• a second rotating blade mounted on a second shaft, wherein the second rotating blade is spaced apart from the first rotating blade by an adjustable gap and wherein the first and second shafts have substantially the same mass;
• an inner housing connected to the second shaft;
• a first keyed spur bearing rotated by the first shaft;
• a second, third, and fourth spur bearings rotated by the first spur bearing, wherein the fourth spur bearing is keyed to rotate the second shaft;
• an adjustment mechanism accessible from the exterior of the outer housing to adjust a third shaft that is connected to the inner housing by zero end play bearings, wherein adjustment of the third shaft changes the gap between the first and second rotating blades;
• a fourth shaft receiving external power for movement in a direction along the length of the fourth shaft;
• and
• a motion translator mechanism that translates movement and power from the fourth shaft to a direction perpendicular to the length of the fourth shaft, wherein the motion translator is connected to the inner housing to cause the second rotating blade to move in the perpendicular direction to pivot between an open position and a closed position.