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Pneumatic Manipulator Arm

Positech’s pneumatic manipulator arm, the World Manipulator® (WM), is a low-headroom solution for manipulating payloads up to 1,000 pounds, providing rigid support and reach-in capability. This ergonomic lift assist can be used as an alternative to a sling and hoist or a forklift to improve safety, functionality and performance. The World Manipulator offers extended reach and lift, allowing an operator to reach into, over and around the work cell. The device’s off-center moment loading feature allows the operator to extend the end-effector and payload well beyond the end of the arm. This pneumatic manipulator arm is available in three model configurations. It provides up to 60 inches of vertical lift and flexible mounting options.

World Manipulator World Manipulator
World Manipulator World Manipulator
World Manipulator World Manipulator
World Manipulator World Manipulator
Cut Sheet Tech Specs Capacity lbs.* Vertical Travel in. Reach in. 2D Drawing 3D Model Installation Manual
WM WM200
WM200.dwg WM200.sldprt WM200 WM200
WM WM300
WM300.dwg WM300.sldprt WM300 WM300
WM WM450
WM450.dwg WM450.sldprt WM450 WM450

Requires 90 psi (5.52 bar) clean, dry air to operate at rated capacity

*Includes payload and end-effector; increasing arm length reduces payload capacity. Lift capacity is dependent upon arm length.

To download the PDF of a model above, please click on the cell containing the model name


  • 5:1 design factor minimum on all structural components
  • Pilot operated lock valve on lift cylinder and gripper cylinders prevent downward arm movement and loss of payload if supply pressure is interrupted
  • Gripper Safety Circuitry available, prevents accidental release of unsupported payloads
  • Lost Load Cylinder is a separately sealed hydraulic device that protects the operator from any sudden, uncontrolled upward motion of the manipulator arms
  • Parallel linkage arms allow end-effector to remain parallel to the floor
  • Minimum Lift Circuit is standard, allowing controlled downward movement of payload
  • Floor mounted pedestal is provided with concrete anchor bolts, mounting hardware and leveling jacks for ease of installation (No grout required)
  • Does not require an air lubricator
  • Main post adjustable friction brake allows the operator to set arm motion for ease of operation
  • Complies with CE and other National Standards


  • 360° continuous rotation around main post vertical axis
  • Includes air filter/regulator system. Does not require line lubrication
  • Standard flange mounting for adaptability to a variety of custom end-effectors
  • Pneumatically operated, requires clean dry input pressure
  • Precision bearings and thrust washers at rotation axes for smooth motion and long life
  • Standard pistol grip or optional ergonomic twist grip controls
  • End-of-arm rotating axis has up to 36,000 inch pounds of end-of-arm moment loading
  • Vertical axes brakes available
  • Mounting Options: overhead, trolley, pedestal, wall mount, column, machine or mobile/portable base


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