The lifting system (glass pack unloader) is an essential piece of equipment in the glass industry, specifically engineered to handle full packs of glass sheets with maximum safety and maneuverability. Designed for heavy-duty operations, this system ensures structural stability and precise control during all phases of loading, unloading, and internal warehouse transfers.
Thanks to their robust structure and multi-level locking systems, these units ensure safe, gentle handling of glass packs.
The foundation of the lifting system is a high-resistance tubular steel frame, dimensioned to support payloads ranging from 3,000 kg to 6,000 kg. This structure is designed to adapt to various glass dimensions, including Standard (3210×2600 mm) and Jumbo (6000×3300 mm) configurations.
To maintain load integrity and prevent accidental shifting, the equipment utilizes an articulated multi-point locking system:
Engineering Note on Positive Mechanical Locking:
Our GR series offers specialized configurations to match your specific production requirements.
Designed for standard sheets and routine warehouse operations, the GR30A model offers a compact yet high-capacity solution for packs up to 3,000 kg.
The heavy-duty choice for Jumbo glass processing, the GR60A is engineered for maximum payloads and extended sheet lengths, ensuring stability for packs up to 6,000 kg.
Engineered for safe loading, unloading and transport of bare glass packs up to 6,000 x 3,300 mm, the GR60AT features an adjustable support base with manually adjustable lateral and upper clamping arms. Upper arm opening is controlled via handwheel for precise, tool-free adjustment. The overhead crane hook is designed to lower independently, allowing safe and convenient disengagement without the need for a ladder.
The heavy-duty choice for Jumbo glass processing, the GR120 is engineered for maximum payloads and extended sheet lengths, ensuring stability for packs up to 4,000 kg.
The GR series for glass pack lifting is indispensable for:
All units are fully CE certified and designed in full compliance with current safety directives, ensuring long-term reliability and operational risk reduction.
All regulation handwheels and cranks are positioned at operator height, facilitating quick setup without unnecessary physical strain.
Optional upper-mounted control mirrors allow the operator to verify the rear alignment and the position between two glass packs, ensuring a secure hold even when the view is partially obstructed.
The upper lifting eye (golfare) is adjustable to ensure perfect load balancing regardless of the pack's weight distribution.
The GR60AT version features a lowerable lifting eye, allowing the crane hook to be detached at ground level without requiring ladders or elevated platforms.
GR30A (Standard Sheet): Engineered for glass packs with a maximum dimension of 3300 x 2600 mm and a capacity of 3,000 kg. It is the industrial benchmark for standard warehouse movements.
GR60A (Jumbo Sheet): Designed for "Jumbo" glass formats up to 6000 x 3300 mm, with a doubled load capacity of 6,000 kg.
The GR series incorporates a dedicated thickness-adjustment knob. This mechanical interface allows the operator to precisely calibrate the distance between the clamping brackets and the glass. This ensures that the glass pack is locked at the top.
To optimize ergonomics and operational speed, the GR60A features a counterweight activation system. This engineering solution balances the mass of the upper arms, allowing the operator to adjust the upper brackets with minimal physical effort. This "weight-free" movement ensures that the height of the grip can be tailored to the specific height of the glass pack (down to a minimum of 2000 mm) without the need for auxiliary lifting tools.
Yes. Both models utilize side brackets with telescopic arms. These arms can be moved laterally to accommodate the width of the glass, ensuring that the package is supported at its ends. This configuration is vital for preventing structural bowing or stress concentrations in the glass sheets during handling from the storage rack to the production line.
Every Schiavo glass pack unloader is delivered with a CE Certificate and a comprehensive Maintenance Manual. These documents are essential for passing workplace safety inspections and ensuring that the equipment is operated within its engineered tolerances. Adherence to the maintenance schedule—particularly the inspection of the mechanical pivots and the integrity of the bracket linings—is mandatory for long-term operational reliability.
At Schiavo, we believe that the best industrial solutions are not simply sold, they are built through collaboration. Our team of designers and technicians is ready to work alongside you to find the perfect balance between your operational vision and our engineering solutions.
Whether you need to optimize a single process or design a complete custom line, we are here to listen. Share a few details about your project below, and let’s explore together how our Made in Italy technology can move your business forward.
