Calculate displacement volume per stroke.

V _P  = (A _P )(Stroke length) =(π/4)(D_P )²(Stroke length)

       =(π/4)(60 )²(100)

         =282735 mm³ /stroke

Corrrected volume per stroke.

V correct =(1-(9/100))V _P    (Since there is a 9% slip)

                 =(1-(9/100))(282735)

                 = 257288 .85 mm³ /stroke

Calculate displacement volume for ram.

Vram =ram area × ram displacement = (π/4)(D_C )²× ram displacement

           =(π/4)(510 )²(410)

         = 83789357.143 mm³

Calculate the number of strokes

stroke =Vram/V correct

          =83789357.143/257288 .85

          =325.66 strokes

Therefore, number of strokes are 326 strokes

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