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GR250-3012
ESCOTT
Product Description
A 250 kg film roll is the hardest load on a converting floor: heavy, round, soft on the outside, and expensive the moment it is dented, telescoped or crushed at the edge. It cannot be lifted by its edges like a crate, it cannot be gripped like a steel part, and every bad handling step goes straight into scrap or into a customer claim on the film that is the product. This pneumatic manipulator is built for that single load, and for nothing else.
The roll is held by an expanding shaft that enters the paper core and locks the roll from the inside, so the film surface is never used as a gripping face and never carries the 250 kg. The pneumatic balance cylinder takes the full rated load through the whole working envelope, so the operator guides direction and speed with a light hand on the control handle, with no lifting effort and no second person at the far end of the roll.
Lift and 90-degree rotation happen in the same cycle: a roll that arrives lying on its side is turned upright while the machine is still holding it, then set onto the unwinder or rewinder shaft with the fine movement of the arm. The machine runs on ordinary shop compressed air at 0.6-0.8 MPa, with no electric motor, no hydraulic fluid and no servo programming in the load path. Working radius, lifting stroke, shaft diameter and rotation stop are configured from your rolls and your machine layout before production starts.
Technical Parameters
| Parameter | Specification |
|---|---|
| Rated load | 250 kg |
| Handling method | Core-insertion expanding shaft, roll locked from the inside |
| Clamp head | Expanding shaft as standard; OD jaw head available on request, Customized to your roll |
| Shaft diameter / expansion range | Customized to your roll core |
| Rotation | 90 degrees, stop position set to the unwinder / rewinder |
| Working radius | Customized to the line |
| Lifting stroke | Customized to the line |
| Roll weight / diameter / width | Customized |
| Roll type | PE, BOPP, CPP, PET, stretch, shrink, laminating and printed film |
| Drive type | Pneumatic balance, power-assisted |
| Power source | Compressed air, 0.6-0.8 MPa |
| Operation | Hand-guided control handle, single grip |
| Base | Floor-mounted base, anchored to the floor |
| Safety features | Rated load marking on the arm, anti-drop protection on air loss, overload protection, safety warning |
| Certification | ISO, CE |
| Warranty | 1 year |
| Delivery condition | Shipped in sections, on-site assembly and commissioning |
Working Principle
The operator swings the arm over the roll and lowers the expanding shaft into the roll core, with the roll standing on its pallet, stillage or on the floor.
The shaft expands and locks against the inside of the core. The 250 kg is now carried on the core wall, not on the film, and the load path never touches the wrapped surface.
The pneumatic balance cylinder takes over the weight. From this point the roll floats at the operator's hand — the balance holds at every height, extended or close in.
The operator guides the arm by hand to lift the roll clear of the pallet, moving only direction and speed. No lifting posture, no sling to tighten, no forklift to wait for.
Where the line needs the roll upright, the 90-degree rotation turns it from horizontal to vertical while the shaft is still locked in the core.
The roll is aligned and slid onto the unwinder or rewinder shaft, the operator using the short travel of the hand-guided arm rather than nudging a 250 kg load into place. The shaft releases, the arm returns to balance, and spent cores are removed in the same cycle.
Product Features
1. True 250 kg rated load, air-balanced throughout. The pneumatic balance cylinder supports the rated load across the whole working envelope, so a 250 kg roll feels light whether it is up, down, fully extended or close to the column. Balance is maintained as the arm travels instead of being set once at one height, which is what makes vertical placement by hand practical at this weight. Rated capacity is marked on the arm, and the structure carries overload protection so a misjudged roll cannot load the machine beyond its rating.
2. Core-insertion shaft, so the film is never the gripping face. The expanding shaft enters the paper core and locks the roll from the inside, which means the film surface, the edges and the lap ends are not where 250 kg hangs. Rolls arrive at the next process without clamp marks, creases or crushed edges, and cores stay round enough to fit the unwinder shaft. Shaft diameter and expansion range are machined to your actual core, not to a nominal size, and an OD jaw head is available where a roll has no usable core.
3. 90-degree rotation built into the handling cycle. Rotation turns the roll from horizontal to vertical while the shaft is still holding it, which removes the single most dangerous step in roll handling — turning a heavy roll upright by hand or by levering it against the machine frame. The stop position is set to match your unwinder or rewinder, so the roll arrives already square to the shaft and goes on with a short push instead of a fight. No manual lifting, twisting or guiding of the roll is needed at any point in the turn.
4. One hand on one control handle. Raise, lower, travel, rotate and shaft release are all controlled from a single grip, positioned for your operator and the height of your machines before delivery. The handle transmits direction and speed only, so the operator's hand stays relaxed through a full shift and the roll follows the hand rather than the other way round. This is also why operators are productive after a short instruction rather than a training course.
5. Pneumatic drive on ordinary shop air. The handling function runs on compressed air at 0.6-0.8 MPa, with no electric motor, no hydraulic fluid and no servo programming involved in carrying the load. Running cost is compressed air rather than a maintenance contract, components are standard serviceable pneumatic parts, and wear parts are reachable from floor level so routine service does not require dismantling the arm. Where the plant already has an air line at the machine, installation is a mechanical fixing job rather than an electrical project.
6. Floor-mounted base with safety built in as standard. The machine is anchored to the floor beside the line, so the working envelope stays fixed relative to the machine it serves and the floor in front of the line stays clear. A fixed base also means a heavy roll cannot push the arm out of position or creep while the operator is aligning it. Rated load marking, anti-drop protection on air loss, overload protection and safety warnings are part of the machine rather than options added later, so a broken hose never becomes a dropped 250 kg roll.
Application Scenarios
Film production — removing finished rolls from blown film and cast film winders and placing them onto pallets, racks or the floor without surface damage.
Printing and laminating lines — loading film rolls onto unwinders at the start of a run, rotating them upright, and lifting spent cores out at the end of it.
Slitting and rewinding — handling master rolls into the slitter and moving finished reels out without edge damage or core deformation.
Bag making and converting — feeding film rolls into converting machines and changing rolls at the rate the machine can run, without waiting for a forklift.
Coating, metallizing and battery separator lines — roll handling where the web surface must not be touched and dust or contact contamination counts as a defect.
Packaging, storage and transfer areas — moving stretch, shrink and printed rolls between racks, pallets, stillages and loading bays with one operator.
