Standard Stroke Bore size (mm) Standard stroke (mm) 20 20, 30, 50, 100, 150, 200 25 20, 30, 50, 100, 150, 200 32 25, 50, 100, 150, 200 40 25, 50, 100, 150, 200 50 25, 50, 100, 150, 200 63 25, 50, 100, 150, 200 Manufacture of Intermediate Stroke Intermediate strokes of 1 mm each can be produced by using spacers with standard stroke cylinders.