Vacuum Grippers

Vacuum Grippers within End Effectors.

Category CAT-000000051

Publications

• OT-2026-000026552
  Single bellows cup vacuum gripper, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 815 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026553
  Three cup vacuum gripper, three outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,195 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026554
  Six pad foam vacuum gripper, six outlet manifold, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,104 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026555
  Foam pad vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,081 words

  A zoned vacuum gripping tool comprising one mounting flange, one foam pad, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000026556
  Single bellows cup vacuum gripper, two stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 744 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve while the

• OT-2026-000026557
  Three cup vacuum gripper, three outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,124 words

  A suction-cup vacuum gripping tool comprising one mounting flange, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down position,

• OT-2026-000026558
  Six pad foam vacuum gripper, six outlet manifold, two stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,018 words

  A foam-pad vacuum gripping tool comprising one mounting flange, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the

• OT-2026-000026559
  Foam pad vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,187 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the

• OT-2026-000026560
  Single bellows cup vacuum gripper, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 850 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026561
  Three cup vacuum gripper, three outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,229 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026562
  Six pad foam vacuum gripper, six outlet manifold, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,124 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026563
  Foam pad vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,152 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the

• OT-2026-000026564
  Single bellows cup vacuum gripper, two stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 815 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026565
  Three cup vacuum gripper, three outlet manifold, common isolation valve, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,195 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026566
  Six pad foam vacuum gripper, six outlet manifold, two stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,089 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026567
  Foam pad vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,066 words

  A zoned vacuum gripping tool comprising one mounting flange, one foam pad, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the workpi

• OT-2026-000026568
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 744 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve while the

• OT-2026-000026569
  Three cup vacuum gripper, three outlet manifold, common isolation valve, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,124 words

  A suction-cup vacuum gripping tool comprising one mounting flange, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down position,

• OT-2026-000026570
  Six pad foam vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,033 words

  A foam-pad vacuum gripping tool comprising one mounting flange, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the

• OT-2026-000026571
  Foam pad vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,172 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the

• OT-2026-000026572
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 850 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026573
  Three cup vacuum gripper, three outlet manifold, common isolation valve, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,229 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026574
  Six pad foam vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,139 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026575
  Foam pad vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,137 words

  A zoned vacuum gripping tool comprising one tool-change interface, one foam pad, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the foam pad reaches the workpiece, the foam pad is evacuated by the vacuum pump. Before the workpiece reaches the set-down position, the

• OT-2026-000026576
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 815 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026577
  Three cup vacuum gripper, three outlet manifold, common isolation valve, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,195 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026578
  Six pad foam vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,104 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026579
  Four cup vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,029 words

  A zoned vacuum gripping tool comprising one mounting flange, four suction cups, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the vacuum pump. Before the workpiece reaches the set-down position

• OT-2026-000026580
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 744 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve while the

• OT-2026-000026581
  Three cup vacuum gripper, three outlet manifold, common isolation valve, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,124 words

  A suction-cup vacuum gripping tool comprising one mounting flange, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down position,

• OT-2026-000026582
  Six pad foam vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,018 words

  A foam-pad vacuum gripping tool comprising one mounting flange, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the

• OT-2026-000026583
  Four cup vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,135 words

  A zoned vacuum gripping tool comprising one tool-change interface, four suction cups, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the vacuum pump. Before the workpiece reaches the set-down po

• OT-2026-000026584
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 850 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026585
  Three cup vacuum gripper, three outlet manifold, common isolation valve, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,229 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026586
  Six pad foam vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,124 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026587
  Four cup vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,100 words

  A zoned vacuum gripping tool comprising one tool-change interface, four suction cups, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the vacuum pump. Before the workpiece reaches the set-down po

• OT-2026-000026588
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 815 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026589
  Three cup vacuum gripper, three outlet manifold, common isolation valve, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,195 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one ejector, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the ejector. Before the workpiece reaches the set-down pos

• OT-2026-000026590
  Six pad foam vacuum gripper, six outlet manifold, three stage ejector, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,089 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one ejector, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off b

• OT-2026-000026591
  Four cup vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,029 words

  A zoned vacuum gripping tool comprising one mounting flange, four suction cups, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the vacuum pump. Before the workpiece reaches the set-down position

• OT-2026-000026592
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 744 words

  A bellows-cup vacuum gripping tool comprising one mounting flange, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve while the

• OT-2026-000026593
  Three cup vacuum gripper, three outlet manifold, common isolation valve, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,073 words

  A suction-cup vacuum gripping tool comprising one mounting flange, three suction cups, one plant vacuum connection, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the workpiec

• OT-2026-000026594
  Six pad foam vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down
  September 17, 2026 · Vacuum Grippers · 1,016 words

  A foam-pad vacuum gripping tool comprising one mounting flange, six foam pads, one plant vacuum connection, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece reaches the set-down position, th

• OT-2026-000026595
  Four cup vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,135 words

  A zoned vacuum gripping tool comprising one tool-change interface, four suction cups, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the vacuum pump. Before the workpiece reaches the set-down po

• OT-2026-000026596
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 850 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026597
  Three cup vacuum gripper, three outlet manifold, common isolation valve, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,178 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one plant vacuum connection, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the wo

• OT-2026-000026598
  Six pad foam vacuum gripper, six outlet manifold, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,122 words

  A foam-pad vacuum gripping tool comprising one tool-change interface, six foam pads, one plant vacuum connection, one manifold, one pressure sensor and one blow-off valve. When the foam pads reach the workpiece, the foam pads are evacuated by the plant vacuum connection. Before the workpiece reaches the set-down positi

• OT-2026-000026599
  Four cup vacuum gripper, four zone face, six outlet manifold, pump fed, pulsed blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,100 words

  A zoned vacuum gripping tool comprising one tool-change interface, four suction cups, one vacuum pump, one manifold, four zone branches, one contact detector and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the vacuum pump. Before the workpiece reaches the set-down po

• OT-2026-000026600
  Single bellows cup vacuum gripper, three stage ejector, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 815 words

  A bellows-cup vacuum gripping tool comprising one tool-change interface, one bellows cup, one ejector and one blow-off valve. When the bellows cup reaches the workpiece, the bellows cup is evacuated by the ejector. Before the workpiece reaches the set-down position, the workpiece is blown off by the blow-off valve whil

• OT-2026-000026601
  Three cup vacuum gripper, three outlet manifold, common isolation valve, plant vacuum fed, manifold pressure sensor, sustained blow-off before set-down, on a tool changer
  September 17, 2026 · Vacuum Grippers · 1,144 words

  A suction-cup vacuum gripping tool comprising one tool-change interface, three suction cups, one plant vacuum connection, one isolation valve, one manifold, one pressure sensor and one blow-off valve. When the suction cups reach the workpiece, the suction cups are evacuated by the plant vacuum connection. Before the wo