PS600 Unit Load Stacking Equipment


Flexible Productivity

The PS600 mounts on one side of the unit load conveyor and holds the stretch wrapped loads with a blade stop mounted in the stack zone conveyor. The load stacker uses linear rails and bearings to move multiple support bars between the rollers under the unit load. The load is raised and lowered with a variable speed electric drive system. A retainer blade keeps load edges aligned as the support bars are retracted.

PLC Controlled

The machine is controlled by a PLC, which can communicate with the conveyor, stretch wrapper, and palletizer to ensure proper product handling during the stacking sequence. Tracking unit loads via the palletizer’s data stream allows non-matching or partial loads to pass through.

Versatile Load Handling

The PS600 handles 40” x 48” unit loads traveling broadside first, and the carriage is adaptable to handle a wide range of unit load sizes. The heavy-duty steel frame delivers maximum stability and quick installation, and is ideal for high volume warehousing operations.

Technical Specifications

  • Size (L × W × H): 171.0” x 109.0” x 124.0” (4.3 m x 2.8 m x 3.1 m)
  • Electrical: 480 VAC, 60 Hz, 3 phase, 15 A
  • Pneumatics: 4 SCFM (113 Lpm) @ 80 psi Clean Dry Air
  • Pallet Size: 40” x 48” slip sheet loads traveling broad side first
  • Maximum base pallet load height 56” on 30” conveyor
    68” on 18” conveyor
  • Maximum lifted pallet load weight:1200 lbs.
  • Double-stack cycle time: 45 sec.


  • Heavy-duty upgrade - Increased maximum pallet load weight
  • Human-readable HMI status display - (WonderWare, Vorne, RSView, PanelMate, PanelView, more)
  • Upgraded control system - (Allen-Bradley PLC/SLC/CLX, Flex, I/O, more)
  • Custom pallet load height - Increased maximum base pallet load height
  • Custom load sizes - Adaptation for a wide range of pallet load sizes
  • Extra capacity - Multi-stack (3+) capability
  • Over-stack prevention - “Top Level Full” detector (photocells and partial load tracking)
  • Safety switches - Maintenance access gate safety switches
  • Turnkey installation - On-site pre-inspection and equipment installation


  • Compact size

    Uses minimal amount of floor space; easy to install

  • Variable-speed electrical lift

    Low impact starts and stops
    Better accuracy of lift placement when setting down load

  • Load alignment system

    Extremely accurate stacking

  • Unit load sensor

    Ensures lifting carriage will not retract until load is down

  • Open design

    Open top allows for higher multiple stacks and ease of installation

  • Heavy-duty stand and mounting

    Maximum stability for load lifting

  • PLC fault messages

    Operator friendly HMI controls and problem identification

  • 24 VDC UL Listed control panel

    Safer than 120 VAC control panels

  • Short pick-up travel

    Faster stacking than standard forklift style pickup
    Reduced chance of misalignment

  • Linear carriage travel rails

    Heavy-duty linear bearing for years of quiet, precise, dependable operation

  • Top of Load sensor

    Minimal lifting motion for faster throughput
    Accurate unit load height measurement

  • Industrial safety features

    Wire mesh safety enclosure
    LEXAN® safety guard around 480 VAC in control panel
    NEMA 12 controls enclosure
    Lockable electrical disconnect and air dump valve

  • Chain safety spring

    Spring loaded chain take-up on tower lifting chain provides soft connection to lessen drive impacts during jam conditions

  • Carriage over-travel stops

    Upper and lower stops ensure mechanical over-travel protection

  • Fault beacon

    Initiates operator alert when machine is down


PS600 Product Brochure (PDF) »
PS600 Drawing (PDF) »
Product Video »

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