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1 Synchronizing with Double Rod End Cylinders Counter Balance Valve Load Unevenly Balanced Guided Platen Limit Switch 2,000 PSI Maximum Hydraulic Cylinders Series Circuit, At Rest (Next Slide) PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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2 Synchronizing with Double Rod End Cylinders Counter Balance Valve PG1 PG2 1,250 PSI 450 PSI Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen “a” “b” “c” Hydraulic Cylinders Series Circuit, Extending (Next Slide)

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3 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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4 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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5 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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6 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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7 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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8 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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9 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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10 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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11 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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12 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Extending (Next Slide) PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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13 Synchronizing with Double Rod End Cylinders Counter Balance Valve Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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14 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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15 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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16 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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17 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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18 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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19 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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20 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen Hydraulic Cylinders Series Circuit, Retracting Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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21 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen If the Cylinders get out of sync as they cycle they will be re- synchronized as they return to a positive stop or end of stroke Hydraulic Cylinders Series Circuit, Retracting (Next Slide) Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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22 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen When one Limit Switch is made first it energizes Solenoid “c” and sends pump flow to fully retract both Cylinders Hydraulic Cylinders Series Circuit, Retracting (Next Slide) Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 450 PSI “a” “b” “c”

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23 Synchronizing with Double Rod End Cylinders Limit Switch 2,000 PSI Maximum Load Unevenly Balanced Guided Platen When one Limit Switch is made first it energizes Solenoid “c” and sends pump flow to fully retract both Cylinders Hydraulic Cylinders Series Circuit, Retracting (Next Slide) Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 150 PSI “a” “b” “c”

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24 Synchronizing with Double Rod End Cylinders Limit Switch Load Unevenly Balanced Guided Platen When one Limit Switch is made first it energizes Solenoid “c” and sends pump flow to fully retract both Cylinders Hydraulic Cylinders Series Circuit, Retracting (Next Slide) 2,000 PSI Maximum Counter Balance Valve 2,000 PSI Maximum PG1 PG2 0 PSI 150 PSI “a” “b” “c”

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25 Synchronizing with Double Rod End Cylinders Hydraulic Cylinders Series Circuit, Stopped Limit Switch Counter Balance Valve Load Unevenly Balanced Guided Platen Limit Switch (Next Slide) 2,000 PSI Maximum PG1 PG2 1,250 PSI 450 PSI “a” “b” “c”

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26 Series Cylinder Synchronizing Variations Requires the same makeup and re-synchronizing valves Guided Platen Synchronizing Single Rod Cylinders, At Rest To Directional Valve Requires same Counter Balance Valves for running away loads (Next Slide)

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27 Series Cylinder Synchronizing Variations Requires two makeup and re-synchronizing valves Guided Platen Synchronizing Single Rod Cylinders, At Rest To Directional Valve Requires same Counter Balance Valves for running away loads (Next Slide)

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28 Synchronizing with Cylinders in Series Only works with Hydraulic cylinders Requires added valves to re-synchronize at end of stroke Can be mid stroke stopped without special valves Must have bleed ports to assure filling of trapped fluid area Requires extra space for second rod travel Each cylinder must have enough force to do the work required by itself When used for multiple cylinder applications each added cylinder will lag slightly due to compressibility of fluid (Repeat) (Escape to Quit)

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